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Posted to commits@ignite.apache.org by ni...@apache.org on 2019/06/02 18:54:10 UTC

[ignite] branch master updated: IGNITE-11872: EmptyLineSeparator check added

This is an automated email from the ASF dual-hosted git repository.

nizhikov pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/ignite.git


The following commit(s) were added to refs/heads/master by this push:
     new d63f4d3  IGNITE-11872: EmptyLineSeparator check added
d63f4d3 is described below

commit d63f4d3569dcb387394d367a7f00aaf35f1b288e
Author: Nikolay <ni...@apache.org>
AuthorDate: Sun Jun 2 21:53:57 2019 +0300

    IGNITE-11872: EmptyLineSeparator check added
    
    * EmptyLineSeparator check added.
    * Current code formatting issues resolved.
---
 checkstyle/checkstyle-suppressions.xml             |   3 +
 checkstyle/checkstyle.xml                          |  10 +
 .../examples/datagrid/CacheQueryExample.java       |   2 -
 .../dataset/AlgorithmSpecificDatasetExample.java   |   1 -
 .../ignite/examples/ml/genetic/knapsack/Item.java  |   2 +
 .../ignite/examples/ml/genetic/movie/Movie.java    |   2 +
 .../ml/tutorial/Step_7_Split_train_test.java       |   1 -
 .../ignite/examples/ml/tutorial/Step_8_CV.java     |   2 -
 .../examples/springdata/SpringDataExample.java     |   2 -
 .../spark/examples/SharedRDDExampleSelfTest.java   |   1 +
 .../ignite/gridify/GridifySetToSetTarget.java      |   3 +-
 .../ignite/spi/checkpoint/s3/S3CheckpointSpi.java  |   3 +-
 .../jmh/runner/JmhIdeBenchmarkRunner.java          |   1 +
 .../cache/store/cassandra/CassandraCacheStore.java |   1 -
 .../persistence/PersistenceController.java         |   1 -
 .../ignite/tests/CassandraSessionImplTest.java     | 402 +++++++++++----------
 .../org/apache/ignite/tests/utils/TestsHelper.java |   1 -
 .../primitive/ignite-remote-server-config.xml      |   4 +-
 .../client/integration/ClientAbstractSelfTest.java |   1 +
 .../internal/jdbc2/JdbcMetadataSelfTest.java       |   1 -
 .../rest/RestBinaryProtocolSelfTest.java           |   1 -
 .../processors/rest/TestMemcacheClient.java        |   3 +-
 .../rest/protocols/tcp/TcpRestParserSelfTest.java  |   1 -
 ...cThinAffinityAwarenessTransactionsSelfTest.java |   3 +-
 .../ignite/jdbc/thin/JdbcThinMetadataSelfTest.java |   1 +
 .../thin/JdbcThinPreparedStatementSelfTest.java    |   1 -
 .../apache/ignite/DataRegionMetricsProvider.java   |   1 -
 .../main/java/org/apache/ignite/IgniteCompute.java |   3 +-
 .../java/org/apache/ignite/IgniteFileSystem.java   |   4 +-
 .../org/apache/ignite/IgniteSystemProperties.java  |   1 +
 .../src/main/java/org/apache/ignite/Ignition.java  |   1 -
 .../cache/store/jdbc/CacheJdbcPojoStore.java       |   2 +
 .../ignite/cache/store/jdbc/JdbcTypeField.java     |   1 -
 .../cache/store/jdbc/JdbcTypesTransformer.java     |   1 -
 .../ignite/client/ClientCacheConfiguration.java    |   2 -
 .../ignite/configuration/IgniteConfiguration.java  |   1 -
 .../PersistentStoreConfiguration.java              |   1 -
 .../ignite/internal/ClusterMetricsSnapshot.java    |   1 -
 .../ignite/internal/GridInternalException.java     |   3 +-
 .../org/apache/ignite/internal/IgniteFeatures.java |   1 -
 .../org/apache/ignite/internal/IgniteKernal.java   |   1 -
 .../org/apache/ignite/internal/IgnitionEx.java     |   1 -
 .../ignite/internal/binary/BinaryObjectImpl.java   |   1 +
 .../marshaller/jdk/GridClientJdkMarshaller.java    |   3 +-
 .../GridClientZipOptimizedMarshaller.java          |   1 +
 .../client/ssl/GridSslBasicContextFactory.java     |   1 -
 .../cluster/DistributedBaselineConfiguration.java  |   9 +
 .../internal/cluster/IgniteClusterAsyncImpl.java   |   3 +-
 .../internal/commandline/CommandHandler.java       |   1 -
 .../ignite/internal/commandline/CommandLogger.java |   4 -
 .../commandline/baseline/BaselineArguments.java    |   8 +
 .../commandline/cache/CacheCommandList.java        |   1 -
 .../internal/commandline/cache/CacheCommands.java  |   2 -
 .../commandline/cache/CacheContention.java         |   1 +
 .../commandline/cache/CacheSubcommands.java        |   1 -
 .../commandline/cache/CacheValidateIndexes.java    |   1 -
 .../internal/commandline/cache/CacheViewer.java    |   1 -
 .../internal/commandline/cache/IdleVerify.java     |   3 -
 .../org/apache/ignite/internal/jdbc/JdbcUtils.java |   3 +-
 .../org/apache/ignite/internal/jdbc2/JdbcBlob.java |   1 -
 .../apache/ignite/internal/jdbc2/JdbcUtils.java    |   3 +-
 .../communication/GridIoSecurityAwareMessage.java  |   1 +
 .../managers/deployment/GridDeploymentManager.java |   1 -
 .../deployment/GridDeploymentPerVersionStore.java  |   1 -
 .../managers/discovery/GridDiscoveryManager.java   |   1 -
 .../optimized/OptimizedObjectOutputStream.java     |   1 +
 .../apache/ignite/internal/pagemem/FullPageId.java |   1 +
 .../ignite/internal/pagemem/PageIdUtils.java       |   1 -
 .../pagemem/impl/PageMemoryNoStoreImpl.java        |   1 -
 .../MetaPageUpdateLastSuccessfulSnapshotId.java    |   1 +
 .../affinity/GridAffinityAssignmentCache.java      |   1 +
 .../affinity/GridAffinityAssignmentV2.java         |   1 -
 .../processors/affinity/GridAffinityProcessor.java |   1 -
 .../IgniteAuthenticationProcessor.java             |   1 -
 .../authentication/UserManagementOperation.java    |   2 +-
 .../processors/cache/CacheGroupContext.java        |   1 -
 .../processors/cache/CacheMetricsSnapshot.java     |   1 +
 .../cache/CacheWeakQueryIteratorsHolder.java       |   1 -
 .../cache/ClientCacheChangeDiscoveryMessage.java   |   2 +-
 .../processors/cache/GridCacheAdapter.java         |   1 -
 .../processors/cache/GridCacheAttributes.java      |   1 -
 .../cache/GridCacheDeploymentManager.java          |   1 -
 .../processors/cache/GridCacheMapEntry.java        |   2 -
 .../cache/GridCachePartitionExchangeManager.java   |   1 -
 .../processors/cache/GridCacheTtlManager.java      |   1 -
 .../cache/IgniteCacheOffheapManagerImpl.java       |   1 +
 .../cache/binary/BinaryMetadataHolder.java         |   1 -
 .../dht/CacheDistributedGetFutureAdapter.java      |   1 -
 .../cache/distributed/dht/GridDhtCache.java        |   3 +-
 .../cache/distributed/dht/GridDhtCacheAdapter.java |   1 +
 .../dht/GridDhtTxAbstractEnlistFuture.java         |   1 -
 .../distributed/dht/atomic/GridDhtAtomicCache.java |   1 -
 .../dht/topology/GridDhtPartitionTopology.java     |   1 +
 .../near/GridNearTxQueryEnlistFuture.java          |   1 +
 .../processors/cache/mvcc/DeadlockProbe.java       |   3 +
 .../processors/cache/mvcc/MvccProcessorImpl.java   |   3 +
 .../internal/processors/cache/mvcc/ProbedTx.java   |   4 +
 .../cache/mvcc/StaticMvccQueryTracker.java         |   1 +
 .../processors/cache/mvcc/VacuumMetrics.java       |   1 -
 .../processors/cache/mvcc/txlog/TxState.java       |   3 +
 .../cache/persistence/CacheDataRowAdapter.java     |   1 -
 .../GridCacheDatabaseSharedManager.java            |   2 +
 .../IgniteCacheDatabaseSharedManager.java          |   1 -
 .../cache/persistence/file/FileIOFactory.java      |   2 +-
 .../persistence/file/FilePageStoreManager.java     |   1 -
 .../metastorage/MetastorageLifecycleListener.java  |   4 +-
 .../metastorage/MetsatorageSearchRowImpl.java      |   1 +
 .../pagemem/IntervalBasedMeasurement.java          |   2 -
 .../cache/persistence/pagemem/LoadedPagesMap.java  |   2 -
 .../cache/persistence/tree/BPlusTree.java          |   9 +-
 .../tree/BPlusTreeRuntimeException.java            |   2 +
 .../persistence/tree/io/AbstractDataPageIO.java    |   1 -
 .../persistence/wal/ByteBufferBackedDataInput.java |   1 -
 .../persistence/wal/FileWriteAheadLogManager.java  |   1 -
 .../cache/persistence/wal/SegmentRouter.java       |   1 +
 .../wal/aware/SegmentArchivedStorage.java          |   3 +
 .../cache/persistence/wal/aware/SegmentAware.java  |   4 +
 .../wal/aware/SegmentCurrentStateStorage.java      |   4 +
 .../cache/persistence/wal/crc/PureJavaCrc32.java   |   2 -
 .../wal/filehandle/FileHandleManagerImpl.java      |  12 +
 .../wal/filehandle/FileWriteHandleImpl.java        |   1 +
 .../wal/filehandle/FsyncFileHandleManagerImpl.java |   9 +
 .../wal/filehandle/FsyncFileWriteHandle.java       |  17 +
 .../persistence/wal/io/LockedReadFileInput.java    |   3 +
 .../wal/io/LockedSegmentFileInputFactory.java      |   2 +
 .../wal/reader/IgniteWalIteratorFactory.java       |   1 +
 .../wal/reader/StandaloneWalRecordsIterator.java   |   1 +
 .../serializer/RecordSerializerFactoryImpl.java    |   1 +
 .../persistence/wal/serializer/SegmentHeader.java  |   1 +
 .../wal/serializer/TxRecordSerializer.java         |   1 -
 .../cache/query/GridCacheQueryAdapter.java         |   1 +
 .../processors/cache/query/GridCacheQueryBean.java |   2 -
 .../cache/query/QueryEntityIndexDescriptor.java    |   1 +
 .../cache/transactions/IgniteTxLocalAdapter.java   |   1 -
 .../transactions/IgniteTxLocalStateAdapter.java    |   1 +
 .../cache/transactions/IgniteTxManager.java        |   1 +
 .../PartitionCountersNeighborcastFuture.java       |   4 +
 .../cache/tree/mvcc/data/MvccUpdateDataRow.java    |   1 +
 .../processors/cache/version/GridCacheVersion.java |   1 -
 .../cluster/BaselineAdjustForbiddenException.java  |   2 +
 .../processors/cluster/BaselineTopology.java       |   1 -
 .../autoadjust/BaselineAutoAdjustData.java         |   2 +
 .../autoadjust/BaselineAutoAdjustExecutor.java     |   4 +
 .../autoadjust/BaselineAutoAdjustScheduler.java    |   9 +
 .../autoadjust/BaselineAutoAdjustStatus.java       |   1 +
 .../baseline/autoadjust/ChangeTopologyWatcher.java |   6 +
 .../distributed/DetachedPropertyException.java     |   1 +
 .../distributed/DistributedProperty.java           |   4 +
 .../distributed/NotWritablePropertyException.java  |   1 +
 .../datastructures/DataStructuresProcessor.java    |   1 -
 .../processors/diagnostic/DiagnosticProcessor.java |   4 +
 .../diagnostic/PageHistoryDiagnoster.java          |   3 +
 .../processors/hadoop/HadoopJobStatus.java         |   3 +-
 .../internal/processors/igfs/IgfsDataManager.java  |   3 +-
 .../ignite/internal/processors/igfs/IgfsImpl.java  |   1 +
 .../processors/igfs/IgfsInputStreamImpl.java       |   3 +-
 .../internal/processors/igfs/IgfsMetaManager.java  |   4 +-
 .../internal/processors/igfs/IgfsPathIds.java      |   1 -
 .../ignite/internal/processors/igfs/IgfsUtils.java |   4 +-
 .../client/meta/IgfsClientMetaUnlockCallable.java  |   1 +
 .../processors/odbc/jdbc/JdbcParameterMeta.java    |   1 -
 .../cache/affinity/PlatformAffinityFunction.java   |   3 +-
 .../cache/ClientCacheConfigurationSerializer.java  |   1 -
 .../platform/utils/PlatformConfigurationUtils.java |   2 -
 .../platform/utils/PlatformFutureUtils.java        |   3 +-
 .../processors/platform/utils/PlatformUtils.java   |   1 +
 .../processors/query/GridQueryProcessor.java       |   2 -
 .../internal/processors/query/QueryUtils.java      |   1 -
 .../query/messages/GridQueryKillResponse.java      |   1 -
 .../handlers/cache/GridCacheCommandHandler.java    |  11 +
 .../cluster/GridBaselineCommandHandler.java        |   1 -
 .../DataStructuresCommandHandler.java              |   3 +-
 .../handlers/query/CacheQueryFieldsMetaResult.java |   3 +-
 .../rest/request/GridRestCacheRequest.java         |   1 -
 .../internal/sql/SqlStrictParseException.java      |   1 -
 .../sql/command/SqlCreateIndexCommand.java         |   1 -
 .../ignite/internal/util/GridAnnotationsCache.java |   3 +-
 .../ignite/internal/util/GridAtomicInteger.java    |   3 +-
 .../ignite/internal/util/GridAtomicLong.java       |   3 +-
 .../util/GridBoundedConcurrentLinkedHashMap.java   |   1 +
 .../internal/util/GridConfigurationFinder.java     |   3 +-
 .../ignite/internal/util/GridLogThrottle.java      |   1 -
 .../internal/util/GridReadOnlyArrayView.java       |   1 -
 .../ignite/internal/util/GridReflectionCache.java  |   3 +-
 .../apache/ignite/internal/util/GridUnsafe.java    |   1 -
 .../ignite/internal/util/IgniteStopwatch.java      |   3 +
 .../apache/ignite/internal/util/IgniteUtils.java   |   3 +-
 .../ignite/internal/util/MutableSingletonList.java |   1 -
 .../util/StripedCompositeReadWriteLock.java        |  23 +-
 .../org/apache/ignite/internal/util/TimeBag.java   |   1 -
 .../ignite/internal/util/gridify/GridifyUtils.java |   3 +-
 .../ignite/internal/util/io/GridFilenameUtils.java |   4 +-
 .../util/io/GridReversedLinesFileReader.java       |   6 +-
 .../util/offheap/GridOffHeapPartitionedMap.java    |   3 +-
 .../apache/ignite/internal/util/typedef/PCE.java   |   3 +-
 .../visor/cache/VisorCacheConfiguration.java       |   1 -
 ...orFindAndDeleteGarbageInPersistenceClosure.java |   1 -
 ...FindAndDeleteGarbageInPersistenceJobResult.java |   1 -
 .../internal/visor/cache/VisorMemoryMetrics.java   |   1 -
 .../internal/visor/igfs/VisorIgfsProfilerTask.java |  11 +
 .../ignite/internal/visor/misc/VisorWalTask.java   |   1 -
 .../node/VisorClientConnectorConfiguration.java    |   1 +
 .../visor/node/VisorNodeDataCollectorTaskArg.java  |   1 +
 .../visor/node/VisorServiceConfiguration.java      |   1 -
 .../visor/node/VisorSqlConnectorConfiguration.java |   1 +
 .../visor/query/VisorQueryScanRegexFilter.java     |   1 +
 .../ignite/internal/visor/tx/TxVerboseKey.java     |   2 -
 .../ignite/internal/visor/util/VisorTaskUtils.java |   1 -
 .../visor/verify/VisorValidateIndexesTaskArg.java  |   2 -
 .../java/org/apache/ignite/lang/IgniteUuid.java    |   1 -
 .../ignite/marshaller/MarshallerContext.java       |   3 +-
 .../ignite/plugin/PluginValidationException.java   |   3 +-
 .../checkpoint/jdbc/JdbcCheckpointSpiMBean.java    |   3 +-
 .../tcp/internal/DiscoveryDataPacket.java          |   1 +
 .../ignite/ssl/SSLServerSocketFactoryWrapper.java  |   1 +
 .../TransactionMixedModeException.java             |   1 +
 ...TransactionUnsupportedConcurrencyException.java |   1 +
 .../ignite/cache/ResetLostPartitionTest.java       |   1 +
 .../ignite/cache/store/jdbc/model/Person.java      |   1 -
 .../cache/store/jdbc/model/PersonComplexKey.java   |   1 -
 .../internal/GridCollisionJobsContextSelfTest.java |   1 -
 .../GridFailoverCustomTopologySelfTest.java        |   1 +
 .../ignite/internal/GridLifecycleBeanSelfTest.java |   1 -
 ...teConnectionConcurrentReserveAndRemoveTest.java |   1 -
 .../IgniteExplicitImplicitDeploymentSelfTest.java  |   1 -
 .../internal/IgniteReflectionFactorySelfTest.java  |   7 +
 .../internal/SensitiveInfoTestLoggerProxy.java     |   4 +
 .../internal/TransactionMetricsMxBeanImplTest.java |   4 +
 .../internal/VisorManagementEventSelfTest.java     |   2 +-
 .../binary/BinaryFieldsAbstractSelfTest.java       |  22 ++
 .../internal/binary/BinaryMarshallerSelfTest.java  |   3 +-
 .../commandline/CommandHandlerParsingTest.java     |   1 -
 .../optimized/OptimizedMarshallerEnumSelfTest.java |   1 +
 .../optimized/OptimizedMarshallerTest.java         |   1 +
 .../affinity/GridAffinityAssignmentV2Test.java     |   6 +-
 .../AuthenticationProcessorSelfTest.java           |   1 +
 .../CacheGroupLocalConfigurationSelfTest.java      |   1 -
 .../cache/CacheNearReaderUpdateTest.java           |   1 +
 .../processors/cache/CacheRebalancingSelfTest.java |   1 -
 .../cache/GridCacheAbstractFullApiSelfTest.java    |   1 -
 .../GridCacheConcurrentTxMultiNodeLoadTest.java    |   2 -
 .../GridCacheInterceptorAbstractSelfTest.java      |   1 -
 .../cache/GridCacheMarshallerTxAbstractTest.java   |   1 +
 .../GridCachePreloadingEvictionsSelfTest.java      |   1 +
 .../cache/GridCachePutAllFailoverSelfTest.java     |   1 -
 .../cache/GridCacheTtlManagerNotificationTest.java |   1 -
 .../cache/GridLocalIgniteSerializationTest.java    |   1 -
 .../processors/cache/H2CacheStoreStrategy.java     |   1 -
 .../IgniteAbstractDynamicCacheStartFailTest.java   |   2 +-
 .../IgniteCacheConfigVariationsFullApiTest.java    |   2 -
 ...niteCacheEntryListenerEagerTtlDisabledTest.java |   1 -
 .../processors/cache/IgniteCacheGroupsTest.java    |   9 -
 .../cache/IgniteCachePeekModesAbstractTest.java    |   1 -
 .../cache/IgniteCacheTxCopyOnReadDisabledTest.java |   1 +
 .../cache/IgniteClientCacheStartFailoverTest.java  |   3 +-
 .../cache/IgniteClusterActivateDeactivateTest.java |   1 +
 .../cache/IgniteOutOfMemoryPropagationTest.java    |   2 -
 ...IgniteTopologyValidatorAbstractTxCacheTest.java |   1 -
 .../cache/IgniteTxMultiNodeAbstractTest.java       |   1 -
 .../cache/WithKeepBinaryCacheFullApiTest.java      |   1 -
 .../binary/BinaryMetadataUpdatesFlowTest.java      |   1 -
 .../GridCacheBinaryObjectsAbstractSelfTest.java    |   1 -
 .../GridCacheSequenceApiSelfAbstractTest.java      |   1 -
 .../distributed/CacheAsyncOperationsTest.java      |   1 +
 .../CacheDiscoveryDataConcurrentJoinTest.java      |   1 +
 .../cache/distributed/CacheParallelStartTest.java  |   1 -
 .../CacheResultIsNotNullOnPartitionLossTest.java   |   1 +
 .../cache/distributed/CacheStartOnJoinTest.java    |   1 +
 ...AbstractDistributedByteArrayValuesSelfTest.java |   2 -
 .../distributed/GridCacheBasicOpAbstractTest.java  |   1 -
 .../distributed/GridCacheEventAbstractTest.java    |   1 -
 .../GridCacheModuloAffinityFunction.java           |   3 +-
 .../GridCachePreloadLifecycleAbstractTest.java     |   3 +-
 .../distributed/IgniteCacheThreadLocalTxTest.java  |   1 -
 .../IgniteRejectConnectOnNodeStopTest.java         |   1 -
 .../distributed/TestCacheNodeExcludingFilter.java  |   1 +
 .../dht/CacheGetReadFromBackupFailoverTest.java    |   4 +
 .../GridCachePartitionsStateValidatorSelfTest.java |   2 +
 .../dht/NotMappedPartitionInTxTest.java            |   1 -
 .../near/GridCacheNearReadersSelfTest.java         |   1 -
 .../near/GridNearCacheStoreUpdateTest.java         |   2 -
 .../GridCacheRebalancingSyncCheckDataTest.java     |   1 -
 .../EvictionPolicyFactoryAbstractTest.java         |   3 +-
 ...teCacheStoreSessionWriteBehindAbstractTest.java |   1 -
 .../local/GridCacheLocalEvictionEventSelfTest.java |   1 +
 .../cache/mvcc/CacheMvccAbstractTest.java          |   2 -
 .../cache/mvcc/CacheMvccTxFailoverTest.java        |   1 -
 .../cache/mvcc/MvccUnsupportedTxModesTest.java     |   1 +
 .../IgnitePdsDestroyCacheAbstractTest.java         |   1 -
 .../MemoryPolicyInitializationTest.java            |   1 -
 .../db/CheckpointBufferDeadlockTest.java           |   1 -
 ...IgnitePdsCacheWalDisabledOnRebalancingTest.java |   1 -
 .../db/IgnitePdsDataRegionMetricsTest.java         |   1 +
 .../db/checkpoint/CheckpointFreeListTest.java      |   2 +
 .../IgniteCheckpointDirtyPagesForLowLoadTest.java  |   2 +
 .../db/checkpoint/IgniteMassLoadSandboxTest.java   |   1 +
 .../db/checkpoint/ProgressWatchdog.java            |   1 +
 .../IgnitePdsCacheDestroyDuringCheckpointTest.java |   1 -
 .../IgniteUidAsConsistentIdMigrationTest.java      |   1 -
 .../db/wal/reader/IgniteWalReaderTest.java         |   1 +
 .../db/wal/reader/MockWalIteratorFactory.java      |   2 +-
 .../persistence/pagemem/FullPageIdTableTest.java   |   1 -
 .../IgniteChangeGlobalStateDataStructureTest.java  |   1 -
 .../persistence/tree/io/TrackingPageIOTest.java    |   1 -
 .../wal/reader/FilteredWalIteratorTest.java        |   6 +
 .../reader/StandaloneWalRecordsIteratorTest.java   |   2 +-
 .../persistence/wal/scanner/WalScannerTest.java    |   1 +
 .../cache/query/CacheScanQueryFailoverTest.java    |   4 +-
 ...acheContinuousQueryAsyncFilterListenerTest.java |   1 -
 .../CacheContinuousQueryOperationP2PTest.java      |   2 +
 .../CacheContinuousQueryRandomOperationsTest.java  |   1 -
 .../continuous/CacheKeepBinaryIterationTest.java   |   1 -
 .../GridCacheContinuousQueryConcurrentTest.java    |   2 -
 ...cheClientWriteBehindStoreNonCoalescingTest.java |   1 -
 .../AbstractTransactionIntergrityTest.java         |  14 +-
 .../TxDeadlockDetectionUnmasrhalErrorsTest.java    |   4 -
 .../TxPartitionCounterStateAbstractTest.java       |   1 +
 ...rtitionCounterStateOnePrimaryOneBackupTest.java |   1 -
 .../transactions/TxRollbackOnTimeoutTest.java      |   1 -
 .../processors/cluster/BaselineAutoAdjustTest.java |   1 +
 .../continuous/GridMessageListenSelfTest.java      |   2 +
 .../processors/database/BPlusTreeSelfTest.java     |   1 -
 .../diagnostic/DiagnosticProcessorTest.java        |   2 +
 ...calSecondaryFileSystemDualAbstractSelfTest.java |   1 -
 .../DistributedMetaStoragePersistentTest.java      |   4 -
 ...eDeploymentProcessingOnCoordinatorFailTest.java |   1 -
 ...ServiceDeploymentProcessingOnNodesFailTest.java |   1 -
 .../sql/SqlParserSetStreamingSelfTest.java         |   1 -
 .../internal/stat/IoStatisticsCacheSelfTest.java   |   1 -
 .../ignite/internal/util/BitSetIntSetTest.java     |   2 -
 .../ignite/internal/util/IgniteUtilsSelfTest.java  |   7 +-
 .../internal/util/future/IgniteFutureImplTest.java |   1 -
 .../shmem/LoadWithCorruptedLibFileTestRunner.java  |   3 +-
 .../util/nio/GridNioDelimitedBufferSelfTest.java   |   1 -
 .../offheap/GridOffHeapMapAbstractSelfTest.java    |   1 -
 ...fHeapPartitionedMapPerformanceAbstractTest.java |   1 +
 .../ignite/lang/GridBasicPerformanceTest.java      |   1 -
 .../ignite/lang/utils/GridListSetSelfTest.java     |   1 -
 .../cache/GridCacheDataStructuresLoadTest.java     |   1 -
 .../redeploy/GridSingleSplitsRedeployLoadTest.java |   1 -
 .../MarshallerEnumDeadlockMultiJvmTest.java        |   2 +
 .../GridP2PMissedResourceCacheSizeSelfTest.java    |   1 +
 .../java/org/apache/ignite/p2p/GridP2PTestJob.java |   3 +-
 .../GridSessionTaskWaitJobAttributeSelfTest.java   |   1 -
 .../spi/ExponentialBackoffTimeoutStrategyTest.java |   2 -
 .../tcp/TcpCommunicationStatisticsTest.java        |   1 -
 .../FilterDataForClientNodeDiscoveryTest.java      |   1 -
 .../discovery/LongClientConnectToClusterTest.java  |   1 +
 .../spi/discovery/tcp/IgniteClientConnectTest.java |   1 -
 .../tcp/TcpDiscoveryNodeJoinAndFailureTest.java    |   1 -
 .../spi/discovery/tcp/TcpDiscoveryRestartTest.java |   1 -
 .../spi/discovery/tcp/TcpDiscoverySelfTest.java    |   8 -
 .../tcp/TcpDiscoverySpiFailureTimeoutSelfTest.java |   1 -
 .../tcp/TcpDiscoverySslSecuredUnsecuredTest.java   |   2 -
 .../tcp/TcpDiscoverySslTrustedUntrustedTest.java   |   2 +-
 ...aptiveLoadBalancingSpiMultipleNodeSelfTest.java |   1 +
 .../apache/ignite/testframework/GridTestUtils.java |   3 +-
 .../ignite/testframework/MvccFeatureChecker.java   |   1 -
 .../junits/common/GridCommonAbstractTest.java      |   1 -
 .../common/GridRollingRestartAbstractTest.java     |   1 -
 .../junits/multijvm/IgniteProcessProxy.java        |   1 -
 .../apache/ignite/development/utils/TxWalStat.java |   3 +
 .../cache/persistence/file/IgniteNativeIoLib.java  |   1 -
 ...ocalWalModeChangeDuringRebalancingSelfTest.java |   1 -
 .../cache/persistence/file/IgniteFileIOTest.java   |   1 +
 .../file/IgniteNativeIoWithNoPersistenceTest.java  |   1 -
 .../IgniteHadoopClientProtocolProvider.java        |   3 +-
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 .../collections/HadoopHashMultimapBase.java        |   3 +-
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 .../hadoop/impl/HadoopUserLibsSelfTest.java        |   1 +
 .../impl/HadoopWeightedMapReducePlannerTest.java   |   1 -
 ...HadoopSecondaryFileSystemConfigurationTest.java |   1 -
 .../IgniteHadoopFileSystemAbstractSelfTest.java    |   1 +
 .../IgniteHadoopFileSystemHandshakeSelfTest.java   |   2 -
 .../HibernateL2CacheConfigurationSelfTest.java     |   1 +
 .../HibernateL2CacheConfigurationSelfTest.java     |   1 +
 .../cache/query/GridCacheTwoStepQuery.java         |   1 -
 .../processors/query/h2/H2TableDescriptor.java     |   1 +
 .../internal/processors/query/h2/QueryParser.java  |   1 -
 .../query/h2/affinity/PartitionExtractor.java      |   1 -
 .../h2/database/io/AbstractH2ExtrasInnerIO.java    |   1 -
 .../processors/query/h2/dml/DmlAstUtils.java       |   1 -
 .../processors/query/h2/dml/UpdatePlanBuilder.java |   1 -
 .../query/h2/opt/GridH2ProxySpatialIndex.java      |   1 -
 .../query/h2/opt/GridH2RowDescriptor.java          |   1 -
 .../query/h2/opt/GridLuceneInputStream.java        |   3 +-
 .../query/h2/sql/GridSqlQueryParser.java           |   1 -
 .../query/h2/sql/GridSqlQuerySplitter.java         |   2 -
 .../processors/query/h2/sql/GridSqlStatement.java  |   1 +
 .../processors/query/h2/sql/GridSqlSubquery.java   |   3 +-
 .../processors/query/h2/sql/GridSqlUpdate.java     |   1 -
 .../msg/GridH2SelectForUpdateTxDetails.java        |   1 +
 .../cache/BinaryTypeRegistrationTest.java          |   3 +
 .../processors/cache/CacheIndexStreamerTest.java   |   2 -
 .../cache/GridCacheQueryIndexDisabledSelfTest.java |   1 +
 .../IgniteCacheAbstractFieldsQuerySelfTest.java    |   1 -
 .../cache/IgniteCacheAbstractQuerySelfTest.java    |   2 -
 ...teCacheConfigurationPrimitiveTypesSelfTest.java |   1 -
 ...teCacheDistributedJoinCollocatedAndNotTest.java |   1 +
 ...teCacheDistributedJoinCustomAffinityMapper.java |   1 +
 .../processors/cache/IgniteCacheGroupsSqlTest.java |   1 -
 .../cache/IgniteCacheInsertSqlQuerySelfTest.java   |   1 -
 .../IgniteCacheJoinQueryWithAffinityKeyTest.java   |   1 -
 ...acheLockPartitionOnAffinityRunAbstractTest.java |   1 -
 ...ockPartitionOnAffinityRunAtomicCacheOpTest.java |   6 +-
 .../IgniteCacheLockPartitionOnAffinityRunTest.java |   1 -
 .../cache/IgniteCacheUpdateSqlQuerySelfTest.java   |   1 -
 .../cache/IgniteDynamicSqlRestoreTest.java         |   1 +
 .../processors/cache/SqlFieldsQuerySelfTest.java   |   1 -
 .../near/IgniteSqlQueryWithBaselineTest.java       |   1 -
 .../index/ComplexPrimaryKeyUnwrapSelfTest.java     |   3 +
 .../index/ComplexSecondaryKeyUnwrapSelfTest.java   |   3 +
 .../cache/index/H2RowExpireTimeIndexSelfTest.java  |   1 -
 .../processors/cache/index/LongIndexNameTest.java  |   2 -
 .../index/OptimizedMarshallerIndexNameTest.java    |   1 +
 .../processors/cache/index/StaticCacheDdlTest.java |   1 -
 .../cache/mvcc/CacheMvccBackupsAbstractTest.java   |   1 -
 .../cache/mvcc/CacheMvccSqlLockTimeoutTest.java    |   1 +
 .../cache/mvcc/MvccRepeatableReadBulkOpsTest.java  |   7 +-
 ...tStoreQueryWithMultipleClassesPerCacheTest.java |   1 -
 ...ngingBaselineCacheQueryNodeRestartSelfTest.java |   1 -
 ...actQueryTableLockAndConnectionPoolSelfTest.java |   4 -
 .../query/IgniteCachelessQueriesSelfTest.java      |   1 -
 .../query/IgniteSqlSegmentedIndexSelfTest.java     |   1 -
 .../IgniteSqlSkipReducerOnUpdateDmlSelfTest.java   |   1 +
 .../query/IgniteSqlSplitterSelfTest.java           |   3 -
 .../processors/query/SqlSystemViewsSelfTest.java   |   4 -
 .../query/h2/GridIndexFullRebuildTest.java         |   4 +
 .../processors/query/h2/QueryDataPageScanTest.java |   1 +
 .../query/h2/sql/BaseH2CompareQueryTest.java       |   1 -
 ...DisappearedCacheWasNotFoundMessageSelfTest.java |   3 +
 .../processors/query/oom/AbstractQueryOOMTest.java |   1 -
 .../org/apache/ignite/sqltests/BaseSqlTest.java    |   4 +-
 .../apache/ignite/stream/jms11/JmsStreamer.java    |   3 +-
 .../ignite/stream/jms11/TestTransformers.java      |   3 +-
 .../cache/jta/websphere/WebSphereTmFactory.java    |   1 +
 .../stream/kafka/connect/IgniteSinkTask.java       |   1 +
 .../connect/serialization/CacheEventConverter.java |   1 +
 .../kubernetes/TcpDiscoveryKubernetesIpFinder.java |   3 +-
 .../log4j2/Log4j2LoggerVerboseModeSelfTest.java    |   2 -
 .../ml/sparkmodelparser/SupportedSparkModels.java  |   1 -
 .../ml/composition/ModelOnFeaturesSubspace.java    |   1 +
 .../ignite/ml/composition/ModelsComposition.java   |   1 +
 .../boosting/GDBBinaryClassifierTrainer.java       |   1 +
 .../WeightedPredictionsAggregator.java             |   1 +
 .../ignite/ml/dataset/PartitionContextBuilder.java |   1 -
 .../extractor/impl/BinaryObjectVectorizer.java     |   1 +
 .../ml/dataset/impl/cache/CacheBasedDataset.java   |   1 -
 .../impl/cache/CacheBasedDatasetBuilder.java       |   1 +
 .../ml/environment/LearningEnvironmentBuilder.java |   1 -
 .../ml/environment/logging/ConsoleLogger.java      |   1 +
 .../java/org/apache/ignite/ml/genetic/GAGrid.java  |   7 +-
 .../ml/genetic/parameter/GAConfiguration.java      |   6 +
 .../ml/math/primitives/matrix/AbstractMatrix.java  |   4 +
 .../ml/math/primitives/matrix/LUDecomposition.java |   3 +
 .../matrix/storage/DenseMatrixStorage.java         |   4 +
 .../matrix/storage/SparseMatrixStorage.java        |   4 +
 .../matrix/storage/ViewMatrixStorage.java          |   2 +
 .../ml/math/primitives/vector/AbstractVector.java  |   1 +
 .../ignite/ml/math/primitives/vector/Vector.java   |   1 -
 .../vector/impl/VectorizedViewMatrix.java          |   2 +
 .../storage/VectorizedViewMatrixStorage.java       |   2 +
 .../discrete/DiscreteNaiveBayesModel.java          |   5 +
 .../discrete/DiscreteNaiveBayesSumsHolder.java     |   2 +
 .../gaussian/GaussianNaiveBayesModel.java          |   5 +
 .../gaussian/GaussianNaiveBayesSumsHolder.java     |   3 +
 .../gaussian/GaussianNaiveBayesTrainer.java        |   1 -
 .../ignite/ml/optimization/LossFunctions.java      |   1 +
 .../updatecalculators/RPropParameterUpdate.java    |   2 +-
 .../org/apache/ignite/ml/pipeline/Pipeline.java    |   2 -
 .../ignite/ml/preprocessing/Preprocessor.java      |   2 -
 .../maxabsscaling/MaxAbsScalerPreprocessor.java    |   1 -
 .../standardscaling/StandardScalerData.java        |   2 +
 .../StandardScalerPreprocessor.java                |   1 +
 .../ignite/ml/selection/cv/CrossValidation.java    |   3 -
 .../ml/selection/scoring/evaluator/Evaluator.java  |   1 -
 .../BinaryClassificationMetrics.java               |   4 +-
 .../exceptions/UnknownClassLabelException.java     |   1 -
 .../ignite/ml/structures/LabeledVectorSet.java     |   1 -
 .../ml/trainers/AdaptableDatasetTrainer.java       |   1 -
 .../ignite/ml/trainers/TrainerTransformers.java    |   1 +
 .../tree/impurity/ImpurityMeasureCalculator.java   |   1 -
 .../java/org/apache/ignite/ml/util/ModelTrace.java |   2 +
 .../org/apache/ignite/ml/util/SandboxMLCache.java  |   1 -
 .../primitives/scalar/GaussRandomProducer.java     |   1 +
 .../apache/ignite/ml/common/KeepBinaryTest.java    |   2 +
 .../apache/ignite/ml/common/LocalModelsTest.java   |   1 -
 .../ml/dataset/feature/ObjectHistogramTest.java    |   2 +
 .../ml/dataset/primitive/SimpleDatasetTest.java    |   1 -
 .../LearningEnvironmentBuilderTest.java            |   1 -
 .../ml/environment/LearningEnvironmentTest.java    |   2 -
 .../primitives/matrix/LUDecompositionTest.java     |   4 +
 .../primitives/matrix/MatrixAttributeTest.java     |   5 +
 .../primitives/matrix/MatrixStorageFixtures.java   |   4 +
 .../primitives/vector/MatrixVectorViewTest.java    |   2 +
 .../primitives/vector/VectorAttributesTest.java    |   5 +
 .../vector/VectorImplementationsFixtures.java      |   3 +
 .../discrete/DiscreteNaiveBayesTrainerTest.java    |   1 +
 .../gaussian/GaussianNaiveBayesTrainerTest.java    |   4 +
 .../encoding/OneHotEncoderPreprocessorTest.java    |   1 -
 .../linear/LinearRegressionSGDTrainerTest.java     |   1 -
 .../paramgrid/ParameterSetGeneratorTest.java       |   1 +
 .../cursor/CacheBasedLabelPairCursorTest.java      |   1 -
 .../BinaryClassificationEvaluatorTest.java         |   1 -
 .../scoring/evaluator/RegressionEvaluatorTest.java |   1 -
 .../impurity/gini/GiniImpurityMeasureTest.java     |   2 -
 .../ml/tree/randomforest/data/TreeNodeTest.java    |   1 +
 .../data/impurity/GiniFeatureHistogramTest.java    |   2 +
 .../data/impurity/MSEHistogramTest.java            |   1 +
 .../util/generators/DataStreamGeneratorTest.java   |   2 -
 .../repository/query/IgniteRepositoryQuery.java    |   4 +
 ...gniteSpringBeanSpringResourceInjectionTest.java |   1 +
 .../IgniteProjectionStartStopRestartSelfTest.java  |   1 +
 .../apache/ignite/stream/storm/StormStreamer.java  |   1 +
 .../ignite/tools/classgen/ClassesGenerator.java    |   3 +-
 .../console/agent/handlers/DatabaseListener.java   |   2 +
 .../internal/websession/WebSessionSelfTest.java    |   1 +
 .../cache/IgniteCacheAbstractBenchmark.java        |   1 +
 .../mvcc/AbstractDistributedMvccBenchmark.java     |   1 +
 .../zk/curator/TestingZooKeeperServer.java         |   3 +
 529 files changed, 814 insertions(+), 655 deletions(-)

diff --git a/checkstyle/checkstyle-suppressions.xml b/checkstyle/checkstyle-suppressions.xml
index 3273169..3f593f9 100644
--- a/checkstyle/checkstyle-suppressions.xml
+++ b/checkstyle/checkstyle-suppressions.xml
@@ -21,4 +21,7 @@
     "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
     "https://checkstyle.org/dtds/suppressions_1_2.dtd">
 <suppressions>
+    <suppress checks="EmptyLineSeparator" files="BCrypt\.java|ConcurrentLinkedDeque8\.java"/>
+
+    <suppress checks="EmptyLineSeparator" files="XGBoostModelLexer\.java|XGBoostModelParser\.java"/>
 </suppressions>
diff --git a/checkstyle/checkstyle.xml b/checkstyle/checkstyle.xml
index 58848e2..199e21e 100644
--- a/checkstyle/checkstyle.xml
+++ b/checkstyle/checkstyle.xml
@@ -38,5 +38,15 @@
 
         <!--Annotation checks. See: http://checkstyle.sourceforge.net/config_annotation.html-->
         <module name="MissingOverride"/>
+
+        <!-- Empty line checks. See: http://checkstyle.sourceforge.net/config_whitespace.html#EmptyLineSeparator -->
+        <module name="EmptyLineSeparator">
+            <!-- PACKAGE_DEF excluded according to Ignite code style. -->
+            <property name="tokens" value="IMPORT, STATIC_IMPORT, CLASS_DEF, INTERFACE_DEF, ENUM_DEF, STATIC_INIT,
+                INSTANCE_INIT, METHOD_DEF, CTOR_DEF, VARIABLE_DEF" />
+
+            <property name="allowMultipleEmptyLines" value="false" />
+            <property name="allowMultipleEmptyLinesInsideClassMembers" value="false" />
+        </module>
     </module>
 </module>
diff --git a/examples/src/main/java/org/apache/ignite/examples/datagrid/CacheQueryExample.java b/examples/src/main/java/org/apache/ignite/examples/datagrid/CacheQueryExample.java
index 86e866e..c486a5c 100644
--- a/examples/src/main/java/org/apache/ignite/examples/datagrid/CacheQueryExample.java
+++ b/examples/src/main/java/org/apache/ignite/examples/datagrid/CacheQueryExample.java
@@ -134,7 +134,6 @@ public class CacheQueryExample {
         print("People with salaries between 0 and 1000 (queried with SCAN query): ", cache.query(scan).getAll());
     }
 
-
     /**
      * Example for TEXT queries using LUCENE-based indexing of people's resumes.
      */
@@ -153,7 +152,6 @@ public class CacheQueryExample {
         print("Following people have 'Bachelor Degree' in their resumes: ", bachelors.getAll());
     }
 
-
     /**
      * Populate cache with test data.
      */
diff --git a/examples/src/main/java/org/apache/ignite/examples/ml/dataset/AlgorithmSpecificDatasetExample.java b/examples/src/main/java/org/apache/ignite/examples/ml/dataset/AlgorithmSpecificDatasetExample.java
index 6a6c9ca..09a09a7 100644
--- a/examples/src/main/java/org/apache/ignite/examples/ml/dataset/AlgorithmSpecificDatasetExample.java
+++ b/examples/src/main/java/org/apache/ignite/examples/ml/dataset/AlgorithmSpecificDatasetExample.java
@@ -77,7 +77,6 @@ public class AlgorithmSpecificDatasetExample {
 
                 Vectorizer<Integer, Vector, Integer, Double> vectorizer = new DummyVectorizer<Integer>(1);
 
-
                 IgniteFunction<LabeledVector<Double>, LabeledVector<double[]>> func = lv -> new LabeledVector<>(lv.features(), new double[]{lv.label()});
 
                 //NOTE: This class is part of Developer API and all lambdas should be loaded on server manually.
diff --git a/examples/src/main/java/org/apache/ignite/examples/ml/genetic/knapsack/Item.java b/examples/src/main/java/org/apache/ignite/examples/ml/genetic/knapsack/Item.java
index 43a387c..c8d13f2 100644
--- a/examples/src/main/java/org/apache/ignite/examples/ml/genetic/knapsack/Item.java
+++ b/examples/src/main/java/org/apache/ignite/examples/ml/genetic/knapsack/Item.java
@@ -25,8 +25,10 @@ import java.io.Serializable;
 public class Item implements Serializable {
     /** Weight of item in lbs. */
     private double weight;
+
     /** Value of item. */
     private double val;
+
     /** Name of item. */
     private String name;
 
diff --git a/examples/src/main/java/org/apache/ignite/examples/ml/genetic/movie/Movie.java b/examples/src/main/java/org/apache/ignite/examples/ml/genetic/movie/Movie.java
index 2eebe5e..b6080c3 100644
--- a/examples/src/main/java/org/apache/ignite/examples/ml/genetic/movie/Movie.java
+++ b/examples/src/main/java/org/apache/ignite/examples/ml/genetic/movie/Movie.java
@@ -25,8 +25,10 @@ import java.util.List;
 public class Movie {
     /** Name of movie. */
     private String name;
+
     /** Genre of movie. */
     private List genre;
+
     /** Rating of movie. */
     private String rating;
 
diff --git a/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_7_Split_train_test.java b/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_7_Split_train_test.java
index e8cc271..69de194 100644
--- a/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_7_Split_train_test.java
+++ b/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_7_Split_train_test.java
@@ -98,7 +98,6 @@ public class Step_7_Split_train_test {
                         minMaxScalerPreprocessor
                     );
 
-
                 DecisionTreeClassificationTrainer trainer = new DecisionTreeClassificationTrainer(5, 0);
 
                 // Train decision tree model.
diff --git a/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_8_CV.java b/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_8_CV.java
index a86f626..aa6f12c 100644
--- a/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_8_CV.java
+++ b/examples/src/main/java/org/apache/ignite/examples/ml/tutorial/Step_8_CV.java
@@ -102,7 +102,6 @@ public class Step_8_CV {
                         imputingPreprocessor
                     );
 
-
                 // Tune hyperparams with K-fold Cross-Validation on the split training set.
                 int[] pSet = new int[]{1, 2};
                 int[] maxDeepSet = new int[]{1, 2, 3, 4, 5, 10, 20};
@@ -161,7 +160,6 @@ public class Step_8_CV {
                         minMaxScalerPreprocessor
                     );
 
-
                 DecisionTreeClassificationTrainer trainer = new DecisionTreeClassificationTrainer(bestMaxDeep, 0);
 
                 // Train decision tree model.
diff --git a/examples/src/main/java/org/apache/ignite/examples/springdata/SpringDataExample.java b/examples/src/main/java/org/apache/ignite/examples/springdata/SpringDataExample.java
index bbf6ab7..cd91bd3 100644
--- a/examples/src/main/java/org/apache/ignite/examples/springdata/SpringDataExample.java
+++ b/examples/src/main/java/org/apache/ignite/examples/springdata/SpringDataExample.java
@@ -138,12 +138,10 @@ public class SpringDataExample {
         for (Person person: persons)
             System.out.println("   >>>   " + person);
 
-
         Cache.Entry<Long, Person> topPerson = repo.findTopByLastNameLike("Smith");
 
         System.out.println("\n>>> Top Person with surname 'Smith': " + topPerson.getValue());
 
-
         List<Long> ids = repo.selectId(1000L, new PageRequest(0, 4));
 
         System.out.println("\n>>> Persons working for organization with ID > 1000: ");
diff --git a/examples/src/test/spark/org/apache/ignite/spark/examples/SharedRDDExampleSelfTest.java b/examples/src/test/spark/org/apache/ignite/spark/examples/SharedRDDExampleSelfTest.java
index 9d4be15..f438032 100644
--- a/examples/src/test/spark/org/apache/ignite/spark/examples/SharedRDDExampleSelfTest.java
+++ b/examples/src/test/spark/org/apache/ignite/spark/examples/SharedRDDExampleSelfTest.java
@@ -26,6 +26,7 @@ import org.junit.Test;
  */
 public class SharedRDDExampleSelfTest extends GridAbstractExamplesTest {
     static final String[] EMPTY_ARGS = new String[0];
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/aop/src/test/java/org/apache/ignite/gridify/GridifySetToSetTarget.java b/modules/aop/src/test/java/org/apache/ignite/gridify/GridifySetToSetTarget.java
index 2ce0f89..593cd65 100644
--- a/modules/aop/src/test/java/org/apache/ignite/gridify/GridifySetToSetTarget.java
+++ b/modules/aop/src/test/java/org/apache/ignite/gridify/GridifySetToSetTarget.java
@@ -203,7 +203,6 @@ public class GridifySetToSetTarget implements GridifySetToSetTargetInterface, Se
 
         Collection<Long> res = new ArrayList<>();
 
-
         while (input.hasNext()) {
             Long val = input.next();
 
@@ -376,4 +375,4 @@ public class GridifySetToSetTarget implements GridifySetToSetTargetInterface, Se
             out.defaultWriteObject();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/aws/src/main/java/org/apache/ignite/spi/checkpoint/s3/S3CheckpointSpi.java b/modules/aws/src/main/java/org/apache/ignite/spi/checkpoint/s3/S3CheckpointSpi.java
index fd1be2e..c10505b 100644
--- a/modules/aws/src/main/java/org/apache/ignite/spi/checkpoint/s3/S3CheckpointSpi.java
+++ b/modules/aws/src/main/java/org/apache/ignite/spi/checkpoint/s3/S3CheckpointSpi.java
@@ -595,7 +595,6 @@ public class S3CheckpointSpi extends IgniteSpiAdapter implements CheckpointSpi {
         s3.putObject(bucketName, data.getKey(), new ByteArrayInputStream(buf), meta);
     }
 
-
     /**
      * Deletes checkpoint data.
      *
@@ -828,4 +827,4 @@ public class S3CheckpointSpi extends IgniteSpiAdapter implements CheckpointSpi {
             return S3CheckpointSpi.this.getProxyUsername();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/jmh/runner/JmhIdeBenchmarkRunner.java b/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/jmh/runner/JmhIdeBenchmarkRunner.java
index 0cad088..011b57c 100644
--- a/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/jmh/runner/JmhIdeBenchmarkRunner.java
+++ b/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/jmh/runner/JmhIdeBenchmarkRunner.java
@@ -112,6 +112,7 @@ public class JmhIdeBenchmarkRunner {
 
         return this;
     }
+
     /**
      * @param outputTimeUnit Output time unit.
      * @return This instance.
diff --git a/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/CassandraCacheStore.java b/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/CassandraCacheStore.java
index b223cb3..df52d94 100644
--- a/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/CassandraCacheStore.java
+++ b/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/CassandraCacheStore.java
@@ -424,7 +424,6 @@ public class CassandraCacheStore<K, V> implements CacheStore<K, V> {
                     return controller.bindKey(statement, key);
                 }
 
-
                 /** {@inheritDoc} */
                 @Override public KeyValuePersistenceSettings getPersistenceSettings() {
                     return controller.getPersistenceSettings();
diff --git a/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/persistence/PersistenceController.java b/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/persistence/PersistenceController.java
index 90ae7da..e64ff5f 100644
--- a/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/persistence/PersistenceController.java
+++ b/modules/cassandra/store/src/main/java/org/apache/ignite/cache/store/cassandra/persistence/PersistenceController.java
@@ -290,7 +290,6 @@ public class PersistenceController {
         Collection<String> keyCols = settings.getTableColumns();
         StringBuilder hdrWithKeyFields = new StringBuilder();
 
-
         for (String column : keyCols) {
             // omit calculated fields in load statement
             if (pojoStrategy && settings.getFieldByColumn(column).calculatedField())
diff --git a/modules/cassandra/store/src/test/java/org/apache/ignite/tests/CassandraSessionImplTest.java b/modules/cassandra/store/src/test/java/org/apache/ignite/tests/CassandraSessionImplTest.java
index ca54794..429de09 100644
--- a/modules/cassandra/store/src/test/java/org/apache/ignite/tests/CassandraSessionImplTest.java
+++ b/modules/cassandra/store/src/test/java/org/apache/ignite/tests/CassandraSessionImplTest.java
@@ -1,200 +1,202 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.ignite.tests;
-
-import static org.junit.Assert.assertEquals;
-import static org.mockito.Matchers.any;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.times;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.Set;
-
-import org.apache.ignite.IgniteLogger;
-import org.apache.ignite.cache.store.cassandra.persistence.KeyValuePersistenceSettings;
-import org.apache.ignite.cache.store.cassandra.session.BatchExecutionAssistant;
-import org.apache.ignite.cache.store.cassandra.session.CassandraSessionImpl;
-import org.apache.ignite.cache.store.cassandra.session.WrappedPreparedStatement;
-import org.junit.Test;
-
-import com.datastax.driver.core.BoundStatement;
-import com.datastax.driver.core.Cluster;
-import com.datastax.driver.core.ColumnDefinitions;
-import com.datastax.driver.core.ConsistencyLevel;
-import com.datastax.driver.core.PreparedId;
-import com.datastax.driver.core.PreparedStatement;
-import com.datastax.driver.core.ResultSet;
-import com.datastax.driver.core.ResultSetFuture;
-import com.datastax.driver.core.Row;
-import com.datastax.driver.core.Session;
-import com.datastax.driver.core.Statement;
-import com.datastax.driver.core.exceptions.InvalidQueryException;
-
-public class CassandraSessionImplTest {
-
-    private PreparedStatement preparedStatement1 = mockPreparedStatement();
-    private PreparedStatement preparedStatement2 = mockPreparedStatement();
-
-    private MyBoundStatement1 boundStatement1 = new MyBoundStatement1(preparedStatement1);
-    private MyBoundStatement2 boundStatement2 = new MyBoundStatement2(preparedStatement2);
-
-    @SuppressWarnings("unchecked")
-    @Test
-    public void executeFailureTest() {
-        Session session1 = mock(Session.class);
-        Session session2 = mock(Session.class);
-        when(session1.prepare(any(String.class))).thenReturn(preparedStatement1);
-        when(session2.prepare(any(String.class))).thenReturn(preparedStatement2);
-
-        ResultSetFuture rsFuture = mock(ResultSetFuture.class);
-        ResultSet rs = mock(ResultSet.class);
-        Iterator it = mock(Iterator.class);
-        when(it.hasNext()).thenReturn(true);
-        when(it.next()).thenReturn(mock(Row.class));
-        when(rs.iterator()).thenReturn(it);
-        when(rsFuture.getUninterruptibly()).thenReturn(rs);
-        /* @formatter:off */
-        when(session1.executeAsync(any(Statement.class)))
-            .thenThrow(new InvalidQueryException("You may have used a PreparedStatement that was created with another Cluster instance"))
-            .thenThrow(new RuntimeException("this session should be refreshed / recreated"));
-        when(session2.executeAsync(boundStatement1))
-            .thenThrow(new InvalidQueryException("You may have used a PreparedStatement that was created with another Cluster instance"));
-        when(session2.executeAsync(boundStatement2)).thenReturn(rsFuture);
-        /* @formatter:on */
-
-        Cluster cluster = mock(Cluster.class);
-        when(cluster.connect()).thenReturn(session1).thenReturn(session2);
-        when(session1.getCluster()).thenReturn(cluster);
-        when(session2.getCluster()).thenReturn(cluster);
-
-        Cluster.Builder builder = mock(Cluster.Builder.class);
-        when(builder.build()).thenReturn(cluster);
-
-        CassandraSessionImpl cassandraSession = new CassandraSessionImpl(builder, null,
-                ConsistencyLevel.ONE, ConsistencyLevel.ONE, 0, mock(IgniteLogger.class));
-
-        BatchExecutionAssistant<String, String> batchExecutionAssistant = new MyBatchExecutionAssistant();
-        ArrayList<String> data = new ArrayList<>();
-        for (int i = 0; i < 10; i++) {
-            data.add(String.valueOf(i));
-        }
-        cassandraSession.execute(batchExecutionAssistant, data);
-
-        verify(cluster, times(2)).connect();
-        verify(session1, times(1)).prepare(any(String.class));
-        verify(session2, times(1)).prepare(any(String.class));
-        assertEquals(10, batchExecutionAssistant.processedCount());
-    }
-
-    private static PreparedStatement mockPreparedStatement() {
-        PreparedStatement ps = mock(PreparedStatement.class);
-        when(ps.getVariables()).thenReturn(mock(ColumnDefinitions.class));
-        when(ps.getPreparedId()).thenReturn(mock(PreparedId.class));
-        when(ps.getQueryString()).thenReturn("insert into xxx");
-        return ps;
-    }
-
-    private class MyBatchExecutionAssistant implements BatchExecutionAssistant {
-
-        private Set<Integer> processed = new HashSet<>();
-
-        @Override
-        public void process(Row row, int seqNum) {
-            if (processed.contains(seqNum))
-                return;
-
-            processed.add(seqNum);
-        }
-
-        @Override
-        public boolean alreadyProcessed(int seqNum) {
-            return processed.contains(seqNum);
-        }
-
-        @Override
-        public int processedCount() {
-            return processed.size();
-        }
-
-        @Override
-        public boolean tableExistenceRequired() {
-            return false;
-        }
-
-        @Override
-        public String getTable() {
-            return null;
-        }
-
-        @Override
-        public String getStatement() {
-            return null;
-        }
-
-        @Override
-        public BoundStatement bindStatement(PreparedStatement statement, Object obj) {
-            if (statement instanceof WrappedPreparedStatement)
-                statement = ((WrappedPreparedStatement)statement).getWrappedStatement();
-
-            if (statement == preparedStatement1) {
-                return boundStatement1;
-            }
-            else if (statement == preparedStatement2) {
-                return boundStatement2;
-            }
-
-            throw new RuntimeException("unexpected");
-        }
-
-        @Override
-        public KeyValuePersistenceSettings getPersistenceSettings() {
-            return null;
-        }
-
-        @Override
-        public String operationName() {
-            return null;
-        }
-
-        @Override
-        public Object processedData() {
-            return null;
-        }
-
-    }
-
-    private static class MyBoundStatement1 extends BoundStatement {
-
-        MyBoundStatement1(PreparedStatement ps) {
-            super(ps);
-        }
-
-    }
-
-    private static class MyBoundStatement2 extends BoundStatement {
-
-        MyBoundStatement2(PreparedStatement ps) {
-            super(ps);
-        }
-    }
-
-}
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.tests;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+
+import org.apache.ignite.IgniteLogger;
+import org.apache.ignite.cache.store.cassandra.persistence.KeyValuePersistenceSettings;
+import org.apache.ignite.cache.store.cassandra.session.BatchExecutionAssistant;
+import org.apache.ignite.cache.store.cassandra.session.CassandraSessionImpl;
+import org.apache.ignite.cache.store.cassandra.session.WrappedPreparedStatement;
+import org.junit.Test;
+
+import com.datastax.driver.core.BoundStatement;
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.ColumnDefinitions;
+import com.datastax.driver.core.ConsistencyLevel;
+import com.datastax.driver.core.PreparedId;
+import com.datastax.driver.core.PreparedStatement;
+import com.datastax.driver.core.ResultSet;
+import com.datastax.driver.core.ResultSetFuture;
+import com.datastax.driver.core.Row;
+import com.datastax.driver.core.Session;
+import com.datastax.driver.core.Statement;
+import com.datastax.driver.core.exceptions.InvalidQueryException;
+
+public class CassandraSessionImplTest {
+
+    private PreparedStatement preparedStatement1 = mockPreparedStatement();
+
+    private PreparedStatement preparedStatement2 = mockPreparedStatement();
+
+    private MyBoundStatement1 boundStatement1 = new MyBoundStatement1(preparedStatement1);
+
+    private MyBoundStatement2 boundStatement2 = new MyBoundStatement2(preparedStatement2);
+
+    @SuppressWarnings("unchecked")
+    @Test
+    public void executeFailureTest() {
+        Session session1 = mock(Session.class);
+        Session session2 = mock(Session.class);
+        when(session1.prepare(any(String.class))).thenReturn(preparedStatement1);
+        when(session2.prepare(any(String.class))).thenReturn(preparedStatement2);
+
+        ResultSetFuture rsFuture = mock(ResultSetFuture.class);
+        ResultSet rs = mock(ResultSet.class);
+        Iterator it = mock(Iterator.class);
+        when(it.hasNext()).thenReturn(true);
+        when(it.next()).thenReturn(mock(Row.class));
+        when(rs.iterator()).thenReturn(it);
+        when(rsFuture.getUninterruptibly()).thenReturn(rs);
+        /* @formatter:off */
+        when(session1.executeAsync(any(Statement.class)))
+            .thenThrow(new InvalidQueryException("You may have used a PreparedStatement that was created with another Cluster instance"))
+            .thenThrow(new RuntimeException("this session should be refreshed / recreated"));
+        when(session2.executeAsync(boundStatement1))
+            .thenThrow(new InvalidQueryException("You may have used a PreparedStatement that was created with another Cluster instance"));
+        when(session2.executeAsync(boundStatement2)).thenReturn(rsFuture);
+        /* @formatter:on */
+
+        Cluster cluster = mock(Cluster.class);
+        when(cluster.connect()).thenReturn(session1).thenReturn(session2);
+        when(session1.getCluster()).thenReturn(cluster);
+        when(session2.getCluster()).thenReturn(cluster);
+
+        Cluster.Builder builder = mock(Cluster.Builder.class);
+        when(builder.build()).thenReturn(cluster);
+
+        CassandraSessionImpl cassandraSession = new CassandraSessionImpl(builder, null,
+                ConsistencyLevel.ONE, ConsistencyLevel.ONE, 0, mock(IgniteLogger.class));
+
+        BatchExecutionAssistant<String, String> batchExecutionAssistant = new MyBatchExecutionAssistant();
+        ArrayList<String> data = new ArrayList<>();
+        for (int i = 0; i < 10; i++) {
+            data.add(String.valueOf(i));
+        }
+        cassandraSession.execute(batchExecutionAssistant, data);
+
+        verify(cluster, times(2)).connect();
+        verify(session1, times(1)).prepare(any(String.class));
+        verify(session2, times(1)).prepare(any(String.class));
+        assertEquals(10, batchExecutionAssistant.processedCount());
+    }
+
+    private static PreparedStatement mockPreparedStatement() {
+        PreparedStatement ps = mock(PreparedStatement.class);
+        when(ps.getVariables()).thenReturn(mock(ColumnDefinitions.class));
+        when(ps.getPreparedId()).thenReturn(mock(PreparedId.class));
+        when(ps.getQueryString()).thenReturn("insert into xxx");
+        return ps;
+    }
+
+    private class MyBatchExecutionAssistant implements BatchExecutionAssistant {
+
+        private Set<Integer> processed = new HashSet<>();
+
+        @Override
+        public void process(Row row, int seqNum) {
+            if (processed.contains(seqNum))
+                return;
+
+            processed.add(seqNum);
+        }
+
+        @Override
+        public boolean alreadyProcessed(int seqNum) {
+            return processed.contains(seqNum);
+        }
+
+        @Override
+        public int processedCount() {
+            return processed.size();
+        }
+
+        @Override
+        public boolean tableExistenceRequired() {
+            return false;
+        }
+
+        @Override
+        public String getTable() {
+            return null;
+        }
+
+        @Override
+        public String getStatement() {
+            return null;
+        }
+
+        @Override
+        public BoundStatement bindStatement(PreparedStatement statement, Object obj) {
+            if (statement instanceof WrappedPreparedStatement)
+                statement = ((WrappedPreparedStatement)statement).getWrappedStatement();
+
+            if (statement == preparedStatement1) {
+                return boundStatement1;
+            }
+            else if (statement == preparedStatement2) {
+                return boundStatement2;
+            }
+
+            throw new RuntimeException("unexpected");
+        }
+
+        @Override
+        public KeyValuePersistenceSettings getPersistenceSettings() {
+            return null;
+        }
+
+        @Override
+        public String operationName() {
+            return null;
+        }
+
+        @Override
+        public Object processedData() {
+            return null;
+        }
+
+    }
+
+    private static class MyBoundStatement1 extends BoundStatement {
+
+        MyBoundStatement1(PreparedStatement ps) {
+            super(ps);
+        }
+
+    }
+
+    private static class MyBoundStatement2 extends BoundStatement {
+
+        MyBoundStatement2(PreparedStatement ps) {
+            super(ps);
+        }
+    }
+
+}
diff --git a/modules/cassandra/store/src/test/java/org/apache/ignite/tests/utils/TestsHelper.java b/modules/cassandra/store/src/test/java/org/apache/ignite/tests/utils/TestsHelper.java
index 7b6f986..1d17714 100644
--- a/modules/cassandra/store/src/test/java/org/apache/ignite/tests/utils/TestsHelper.java
+++ b/modules/cassandra/store/src/test/java/org/apache/ignite/tests/utils/TestsHelper.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.tests.utils;
 
-
 import org.apache.ignite.cache.store.cassandra.common.SystemHelper;
 import org.apache.ignite.internal.processors.cache.CacheEntryImpl;
 import org.apache.ignite.tests.load.Generator;
diff --git a/modules/cassandra/store/src/test/resources/org/apache/ignite/tests/persistence/primitive/ignite-remote-server-config.xml b/modules/cassandra/store/src/test/resources/org/apache/ignite/tests/persistence/primitive/ignite-remote-server-config.xml
index bbaff8c..e8852c0 100644
--- a/modules/cassandra/store/src/test/resources/org/apache/ignite/tests/persistence/primitive/ignite-remote-server-config.xml
+++ b/modules/cassandra/store/src/test/resources/org/apache/ignite/tests/persistence/primitive/ignite-remote-server-config.xml
@@ -59,7 +59,7 @@
 
     <!-- Ignite configuration -->
     <bean id="ignite.cfg" class="org.apache.ignite.configuration.IgniteConfiguration">
-	
+
         <property name="cacheConfiguration">
             <list>
                 <!-- Partitioned cache example configuration (Atomic mode). -->
@@ -67,7 +67,7 @@
                     <property name="atomicityMode" value="ATOMIC"/>
                     <property name="backups" value="1"/>
                 </bean>
-			
+
                 <!-- Configuring persistence for "cache1" cache -->
                 <bean class="org.apache.ignite.configuration.CacheConfiguration">
                     <property name="name" value="cache1"/>
diff --git a/modules/clients/src/test/java/org/apache/ignite/internal/client/integration/ClientAbstractSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/internal/client/integration/ClientAbstractSelfTest.java
index 4dc4a38..3956fca 100644
--- a/modules/clients/src/test/java/org/apache/ignite/internal/client/integration/ClientAbstractSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/internal/client/integration/ClientAbstractSelfTest.java
@@ -477,6 +477,7 @@ public abstract class ClientAbstractSelfTest extends GridCommonAbstractTest {
 
         assertEquals(0, failed);
     }
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/clients/src/test/java/org/apache/ignite/internal/jdbc2/JdbcMetadataSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/internal/jdbc2/JdbcMetadataSelfTest.java
index 2d35db6..6011ad4 100755
--- a/modules/clients/src/test/java/org/apache/ignite/internal/jdbc2/JdbcMetadataSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/internal/jdbc2/JdbcMetadataSelfTest.java
@@ -99,7 +99,6 @@ public class JdbcMetadataSelfTest extends GridCommonAbstractTest {
 
         cfg.setSqlSchemas("PREDEFINED_SCHEMAS_1", "PREDEFINED_SCHEMAS_2");
 
-
         return cfg;
     }
 
diff --git a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/RestBinaryProtocolSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/RestBinaryProtocolSelfTest.java
index e430b37..018f359 100644
--- a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/RestBinaryProtocolSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/RestBinaryProtocolSelfTest.java
@@ -269,7 +269,6 @@ public class RestBinaryProtocolSelfTest extends GridCommonAbstractTest {
 
         assertNull(jcacheDflt.get("key"));
 
-
         jcacheName.put("key", "val");
 
         assertTrue(client.cacheRemove(CACHE_NAME, "key"));
diff --git a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/TestMemcacheClient.java b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/TestMemcacheClient.java
index b6f5724..efb6e1d 100644
--- a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/TestMemcacheClient.java
+++ b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/TestMemcacheClient.java
@@ -787,7 +787,6 @@ final class TestMemcacheClient {
         }
     }
 
-
     private static class Data {
         /** Bytes. */
         private final byte[] bytes;
@@ -900,4 +899,4 @@ final class TestMemcacheClient {
             return extrasLength;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/protocols/tcp/TcpRestParserSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/protocols/tcp/TcpRestParserSelfTest.java
index 0e39c61..182149e 100644
--- a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/protocols/tcp/TcpRestParserSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/protocols/tcp/TcpRestParserSelfTest.java
@@ -115,7 +115,6 @@ public class TcpRestParserSelfTest extends GridCommonAbstractTest {
             }
         }, IOException.class, null);
 
-
         GridTestUtils.assertThrows(log(), new Callable<Object>() {
             @Nullable @Override public Object call() throws Exception {
                 parser.decode(ses, rawPacket(MEMCACHE_REQ_FLAG, (byte)0x01, opaque, key.getBytes(), val.getBytes(), null));
diff --git a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinAffinityAwarenessTransactionsSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinAffinityAwarenessTransactionsSelfTest.java
index f402828..98c5705 100644
--- a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinAffinityAwarenessTransactionsSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinAffinityAwarenessTransactionsSelfTest.java
@@ -185,7 +185,6 @@ public class JdbcThinAffinityAwarenessTransactionsSelfTest extends JdbcThinAbstr
         stmt.execute("COMMIT");
     }
 
-
     /**
      * Utility method that:
      *   1. warms up an affinity cache;
@@ -262,4 +261,4 @@ public class JdbcThinAffinityAwarenessTransactionsSelfTest extends JdbcThinAbstr
                 NODES_CNT * QUERY_EXECUTION_MULTIPLIER + "], got [" + qryExecutionsCntr + "]",
             NODES_CNT * QUERY_EXECUTION_MULTIPLIER, qryExecutionsCntr);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMetadataSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMetadataSelfTest.java
index 6bd5d0e..e36e6d9 100644
--- a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMetadataSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMetadataSelfTest.java
@@ -750,6 +750,7 @@ public class JdbcThinMetadataSelfTest extends JdbcThinAbstractSelfTest {
                 ". Expected schemas: " + expectedSchemas;
         }
     }
+
     /**
      * Negative scenarios for catalog name.
      * Perform metadata lookups, that use incorrect catalog names.
diff --git a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinPreparedStatementSelfTest.java b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinPreparedStatementSelfTest.java
index e7c31cb..48cdc12 100644
--- a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinPreparedStatementSelfTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinPreparedStatementSelfTest.java
@@ -953,7 +953,6 @@ public class JdbcThinPreparedStatementSelfTest extends JdbcThinAbstractSelfTest
             },
             SQLException.class, "Parameter type is unsupported");
 
-
         GridTestUtils.assertThrows(log,
             new Callable<Object>() {
                 @Override public Object call() throws Exception {
diff --git a/modules/core/src/main/java/org/apache/ignite/DataRegionMetricsProvider.java b/modules/core/src/main/java/org/apache/ignite/DataRegionMetricsProvider.java
index 4a13039..9386a66 100644
--- a/modules/core/src/main/java/org/apache/ignite/DataRegionMetricsProvider.java
+++ b/modules/core/src/main/java/org/apache/ignite/DataRegionMetricsProvider.java
@@ -16,7 +16,6 @@
  */
 package org.apache.ignite;
 
-
 /**
  * This interface provides calculated metrics for data region.
  */
diff --git a/modules/core/src/main/java/org/apache/ignite/IgniteCompute.java b/modules/core/src/main/java/org/apache/ignite/IgniteCompute.java
index 2522121..18e93ae 100644
--- a/modules/core/src/main/java/org/apache/ignite/IgniteCompute.java
+++ b/modules/core/src/main/java/org/apache/ignite/IgniteCompute.java
@@ -702,7 +702,6 @@ public interface IgniteCompute extends IgniteAsyncSupport {
      */
     public IgniteCompute withNoFailover();
 
-
     /**
      * Disables caching for the next executed task in the <b>current thread</b>.
      * Has the same behaviour as annotation {@link org.apache.ignite.compute.ComputeTaskNoResultCache}.
@@ -779,4 +778,4 @@ public interface IgniteCompute extends IgniteAsyncSupport {
      * @return Instance of compute API associated with custom executor.
      */
     public IgniteCompute withExecutor(@NotNull String name);
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/IgniteFileSystem.java b/modules/core/src/main/java/org/apache/ignite/IgniteFileSystem.java
index d611871..e8f419f 100644
--- a/modules/core/src/main/java/org/apache/ignite/IgniteFileSystem.java
+++ b/modules/core/src/main/java/org/apache/ignite/IgniteFileSystem.java
@@ -306,7 +306,6 @@ public interface IgniteFileSystem extends IgniteAsyncSupport {
     public <T, R> IgniteFuture<R> executeAsync(IgfsTask<T, R> task, @Nullable IgfsRecordResolver rslvr,
         Collection<IgfsPath> paths, @Nullable T arg) throws IgniteException;
 
-
     /**
      * Executes IGFS task with overridden maximum range length (see
      * {@link org.apache.ignite.configuration.FileSystemConfiguration#getMaximumTaskRangeLength()} for more information).
@@ -375,7 +374,6 @@ public interface IgniteFileSystem extends IgniteAsyncSupport {
     public <T, R> IgniteFuture<R> executeAsync(Class<? extends IgfsTask<T, R>> taskCls,
         @Nullable IgfsRecordResolver rslvr, Collection<IgfsPath> paths, @Nullable T arg) throws IgniteException;
 
-
     /**
      * Executes IGFS task with overridden maximum range length (see
      * {@link org.apache.ignite.configuration.FileSystemConfiguration#getMaximumTaskRangeLength()} for more information).
@@ -540,4 +538,4 @@ public interface IgniteFileSystem extends IgniteAsyncSupport {
     /** {@inheritDoc} */
     @Deprecated
     @Override public IgniteFileSystem withAsync();
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java b/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java
index 6da7731..b7036d2 100644
--- a/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java
+++ b/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java
@@ -890,6 +890,7 @@ public final class IgniteSystemProperties {
      * Default is {@code false}.
      */
     public static final String IGNITE_DISABLE_ONHEAP_CACHE = "IGNITE_DISABLE_ONHEAP_CACHE";
+
     /**
      * When set to {@code false}, loaded pages implementation is switched to previous version of implementation,
      * FullPageIdTable. {@code True} value enables 'Robin Hood hashing: backward shift deletion'.
diff --git a/modules/core/src/main/java/org/apache/ignite/Ignition.java b/modules/core/src/main/java/org/apache/ignite/Ignition.java
index d5bd2a6..39ee68a 100644
--- a/modules/core/src/main/java/org/apache/ignite/Ignition.java
+++ b/modules/core/src/main/java/org/apache/ignite/Ignition.java
@@ -400,7 +400,6 @@ public class Ignition {
         }
     }
 
-
     /**
      * Gets or starts new grid instance if it hasn't been started yet.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoStore.java b/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoStore.java
index 8244c6c..51ae71a 100644
--- a/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoStore.java
+++ b/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoStore.java
@@ -335,8 +335,10 @@ public class CacheJdbcPojoStore<K, V> extends CacheAbstractJdbcStore<K, V> {
     private static class ClassProperty {
         /** */
         private final Method getter;
+
         /** */
         private final Method setter;
+
         /** */
         private final Field field;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypeField.java b/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypeField.java
index 3396b81..c129f43 100644
--- a/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypeField.java
+++ b/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypeField.java
@@ -88,7 +88,6 @@ public class JdbcTypeField implements Serializable {
         return this;
     }
 
-
     /**
      * @return Column name in database.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypesTransformer.java b/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypesTransformer.java
index fc0bc88..98ae9b3 100644
--- a/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypesTransformer.java
+++ b/modules/core/src/main/java/org/apache/ignite/cache/store/jdbc/JdbcTypesTransformer.java
@@ -41,7 +41,6 @@ public interface JdbcTypesTransformer extends Serializable {
     public final List<Integer> NUMERIC_TYPES =
         U.sealList(TINYINT, SMALLINT, INTEGER, BIGINT, REAL, FLOAT, DOUBLE, NUMERIC, DECIMAL);
 
-
     /**
      * Retrieves the value of the designated column in the current row of this <code>ResultSet</code> object and
      * will convert to the requested Java data type.
diff --git a/modules/core/src/main/java/org/apache/ignite/client/ClientCacheConfiguration.java b/modules/core/src/main/java/org/apache/ignite/client/ClientCacheConfiguration.java
index f3a2360..a3db31d 100644
--- a/modules/core/src/main/java/org/apache/ignite/client/ClientCacheConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/client/ClientCacheConfiguration.java
@@ -440,7 +440,6 @@ public final class ClientCacheConfiguration implements Serializable {
         return this;
     }
 
-
     /**
      * @return Copy on read.
      */
@@ -617,7 +616,6 @@ public final class ClientCacheConfiguration implements Serializable {
         return this;
     }
 
-
     /**
      * @return Cache key configuration.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java b/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java
index d7279bc..f1e9124 100644
--- a/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java
@@ -1345,7 +1345,6 @@ public class IgniteConfiguration {
         return this;
     }
 
-
     /**
      * Returns {@code true} if peer class loading is enabled, {@code false}
      * otherwise. Default value is {@code false} specified by {@link #DFLT_P2P_ENABLED}.
diff --git a/modules/core/src/main/java/org/apache/ignite/configuration/PersistentStoreConfiguration.java b/modules/core/src/main/java/org/apache/ignite/configuration/PersistentStoreConfiguration.java
index 37a2528..2dfa4d5 100644
--- a/modules/core/src/main/java/org/apache/ignite/configuration/PersistentStoreConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/configuration/PersistentStoreConfiguration.java
@@ -234,7 +234,6 @@ public class PersistentStoreConfiguration implements Serializable {
         return this;
     }
 
-
     /**
      * Gets a number of threads to use for the checkpointing purposes.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/ClusterMetricsSnapshot.java b/modules/core/src/main/java/org/apache/ignite/internal/ClusterMetricsSnapshot.java
index 47fea3a..b4112f9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/ClusterMetricsSnapshot.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/ClusterMetricsSnapshot.java
@@ -1206,7 +1206,6 @@ public class ClusterMetricsSnapshot implements ClusterMetrics {
         this.totalNodes = totalNodes;
     }
 
-
     /**
      * Sets execution duration for current partition map exchange.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/GridInternalException.java b/modules/core/src/main/java/org/apache/ignite/internal/GridInternalException.java
index 32cfccc..4cc8104 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/GridInternalException.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/GridInternalException.java
@@ -54,7 +54,6 @@ public class GridInternalException extends IgniteCheckedException {
         super(cause.getMessage(), cause);
     }
 
-
     /**
      * Creates new internal exception with given error message and
      * optional nested exception.
@@ -65,4 +64,4 @@ public class GridInternalException extends IgniteCheckedException {
     public GridInternalException(String msg, @Nullable Throwable cause) {
         super(msg, cause);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/IgniteFeatures.java b/modules/core/src/main/java/org/apache/ignite/internal/IgniteFeatures.java
index 3963917..b2484dd 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/IgniteFeatures.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/IgniteFeatures.java
@@ -60,7 +60,6 @@ public enum IgniteFeatures {
     /** Distributed metastorage. */
     DISTRIBUTED_METASTORAGE(11);
 
-
     /**
      * Unique feature identifier.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java b/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java
index 2a40cfb..2b714f3 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java
@@ -2441,7 +2441,6 @@ public class IgniteKernal implements IgniteEx, IgniteMXBean, Externalizable {
             MarshallerExclusions.clearCache();
             BinaryEnumCache.clear();
 
-
             gw.writeLock();
 
             try {
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/IgnitionEx.java b/modules/core/src/main/java/org/apache/ignite/internal/IgnitionEx.java
index 5e485b4..5839168 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/IgnitionEx.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/IgnitionEx.java
@@ -587,7 +587,6 @@ public class IgnitionEx {
         }
     }
 
-
     /**
      * Starts grid with given configuration. Note that this method will throw and exception if grid with the name
      * provided in given configuration is already started.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/binary/BinaryObjectImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/binary/BinaryObjectImpl.java
index 3081f4f..76448a8 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/binary/BinaryObjectImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/binary/BinaryObjectImpl.java
@@ -693,6 +693,7 @@ public final class BinaryObjectImpl extends BinaryObjectExImpl implements Extern
 
         start = in.readInt();
     }
+
     /** {@inheritDoc} */
     @Override public boolean writeTo(ByteBuffer buf, MessageWriter writer) {
         writer.setBuffer(buf);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/jdk/GridClientJdkMarshaller.java b/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/jdk/GridClientJdkMarshaller.java
index dc59254..cda742d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/jdk/GridClientJdkMarshaller.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/jdk/GridClientJdkMarshaller.java
@@ -96,7 +96,6 @@ public class GridClientJdkMarshaller implements GridClientMarshaller {
         /** Class name filter. */
         private final IgnitePredicate<String> clsFilter;
 
-
         /**
          * @param in Input stream.
          * @param clsFilter Class filter.
@@ -117,4 +116,4 @@ public class GridClientJdkMarshaller implements GridClientMarshaller {
             return super.resolveClass(desc);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/optimized/GridClientZipOptimizedMarshaller.java b/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/optimized/GridClientZipOptimizedMarshaller.java
index fe172a5..fceaf67 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/optimized/GridClientZipOptimizedMarshaller.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/client/marshaller/optimized/GridClientZipOptimizedMarshaller.java
@@ -124,6 +124,7 @@ public class GridClientZipOptimizedMarshaller extends GridClientOptimizedMarshal
 
         return baos.toByteArray();
     }
+
     /** {@inheritDoc} */
     @Override public ByteBuffer marshal(Object obj, int off) throws IOException {
         try {
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/client/ssl/GridSslBasicContextFactory.java b/modules/core/src/main/java/org/apache/ignite/internal/client/ssl/GridSslBasicContextFactory.java
index 27a32df..d4075c1 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/client/ssl/GridSslBasicContextFactory.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/client/ssl/GridSslBasicContextFactory.java
@@ -296,7 +296,6 @@ public class GridSslBasicContextFactory implements GridSslContextFactory {
         this.cipherSuites = cipherSuites;
     }
 
-
     /**
      * Sets enabled cipher suites.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/cluster/DistributedBaselineConfiguration.java b/modules/core/src/main/java/org/apache/ignite/internal/cluster/DistributedBaselineConfiguration.java
index 5b891d8..7bed5cb 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/cluster/DistributedBaselineConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/cluster/DistributedBaselineConfiguration.java
@@ -43,28 +43,37 @@ import static org.apache.ignite.internal.util.IgniteUtils.isLocalNodeCoordinator
 public class DistributedBaselineConfiguration {
     /** Default auto-adjust timeout for persistence grid. */
     private static final int DEFAULT_PERSISTENCE_TIMEOUT = 5 * 60_000;
+
     /** Default auto-adjust timeout for in-memory grid. */
     private static final int DEFAULT_IN_MEMORY_TIMEOUT = 0;
+
     /** Message of baseline auto-adjust configuration. */
     private static final String AUTO_ADJUST_CONFIGURED_MESSAGE = "Baseline auto-adjust is '%s' with timeout='%d' ms";
+
     /** Message of baseline auto-adjust parameter was changed from default. */
     private static final String DEFAULT_PROPERTY_UPDATE_MESSAGE =
         "Baseline parameter '%s' was changed from default value='%s' to '%s'";
+
     /** Message of baseline auto-adjust parameter was changed. */
     private static final String PROPERTY_UPDATE_MESSAGE =
         "Baseline parameter '%s' was changed from '%s' to '%s'";
+
     /** */
     private volatile long dfltTimeout;
+
     /** Default auto-adjust enable/disable. */
     private volatile boolean dfltEnabled;
+
     /** */
     private final GridKernalContext ctx;
+
     /** */
     private final IgniteLogger log;
 
     /** Value of manual baseline control or auto adjusting baseline. */
     private final DistributedBooleanProperty baselineAutoAdjustEnabled =
         detachedBooleanProperty("baselineAutoAdjustEnabled");
+
     /**
      * Value of time which we would wait before the actual topology change since last discovery event(node join/exit).
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java
index d39d78e..4bcfa8e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java
@@ -351,6 +351,7 @@ public class IgniteClusterAsyncImpl extends AsyncSupportAdapter<IgniteCluster>
     @Override public boolean enableWal(String cacheName) throws IgniteException {
         return cluster.enableWal(cacheName);
     }
+
     /** {@inheritDoc} */
     @Override public boolean disableWal(String cacheName) throws IgniteException {
         return cluster.disableWal(cacheName);
@@ -413,4 +414,4 @@ public class IgniteClusterAsyncImpl extends AsyncSupportAdapter<IgniteCluster>
     @Override public void writeExternal(ObjectOutput out) throws IOException {
         out.writeObject(cluster);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java
index fa4404b..7c8aaee 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java
@@ -337,7 +337,6 @@ public class CommandHandler {
         return IN.nextLine();
     }
 
-
     /**
      * Requests interactive user confirmation if forthcoming operation is dangerous.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandLogger.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandLogger.java
index 0ea9a5e..5463990 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandLogger.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/CommandLogger.java
@@ -62,7 +62,6 @@ public class CommandLogger {
         return sb;
     }
 
-
     /**
      * Join input parameters with space and wrap optional braces {@code []}.
      *
@@ -132,7 +131,6 @@ public class CommandLogger {
         return indent(o, 1);
     }
 
-
     /**
      * Adds specified indents to begin of object's string representation.
      *
@@ -206,8 +204,6 @@ public class CommandLogger {
         log("Error: " + msg);
     }
 
-
-
     public boolean printErrors(Map<UUID, Exception> exceptions, String s) {
         if (!F.isEmpty(exceptions)) {
             log(s);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/baseline/BaselineArguments.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/baseline/BaselineArguments.java
index 675b03b..78a2a92 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/baseline/BaselineArguments.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/baseline/BaselineArguments.java
@@ -25,15 +25,19 @@ import java.util.List;
 public class BaselineArguments {
     /** Command. */
     private BaselineSubcommands cmd;
+
     /**
      * {@code true} if auto-adjust should be enable, {@code false} if it should be disable, {@code null} if no operation
      * needed.
      */
     private Boolean enableAutoAdjust;
+
     /** New value of soft timeout. */
     private Long softBaselineTimeout;
+
     /** Requested topology version. */
     private long topVer = -1;
+
     /** List of consistent ids for operation. */
     List<String> consistentIds;
 
@@ -95,15 +99,19 @@ public class BaselineArguments {
     public static class Builder {
         /** Command. */
         private BaselineSubcommands cmd;
+
         /**
          * {@code true} if auto-adjust should be enable, {@code false} if it should be disable, {@code null} if no
          * operation needed.
          */
         private Boolean enable;
+
         /** New value of soft timeout. */
         private Long timeout;
+
         /** Requested topology version. */
         private long ver = -1;
+
         /** List of consistent ids for operation. */
         private List<String> ids;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommandList.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommandList.java
index 7eb3b60..02b95ac 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommandList.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommandList.java
@@ -64,7 +64,6 @@ public enum CacheCommandList {
      */
     FIND_AND_DELETE_GARBAGE("find_garbage", new FindAndDeleteGarbage());
 
-
     /** Enumerated values. */
     private static final CacheCommandList[] VALS = values();
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommands.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommands.java
index fd525e7..d455528 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommands.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheCommands.java
@@ -118,7 +118,6 @@ public class CacheCommands implements Command<CacheSubcommands> {
         this.subcommand = cmd;
     }
 
-
     /** */
     private void printCacheHelp() {
         logger.logWithIndent("The '" + CACHE + " subcommand' is used to get information about and perform actions" +
@@ -142,7 +141,6 @@ public class CacheCommands implements Command<CacheSubcommands> {
         logger.nl();
     }
 
-
     /**
      * Print cache command usage with default indention.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheContention.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheContention.java
index b4875f7..b6a76ad 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheContention.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheContention.java
@@ -82,6 +82,7 @@ public class CacheContention implements Command<CacheContention.Arguments> {
         public int minQueueSize() {
             return minQueueSize;
         }
+
         /**
          * @return Max print.
          */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheSubcommands.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheSubcommands.java
index 4543186..d43bd09 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheSubcommands.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheSubcommands.java
@@ -70,7 +70,6 @@ public enum CacheSubcommands {
      */
     FIND_AND_DELETE_GARBAGE("find_garbage", FindAndDeleteGarbageArg.class, new FindAndDeleteGarbage());
 
-
     /** Enumerated values. */
     private static final CacheSubcommands[] VALS = values();
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheValidateIndexes.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheValidateIndexes.java
index 5e2f473..8530d36 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheValidateIndexes.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheValidateIndexes.java
@@ -121,7 +121,6 @@ public class CacheValidateIndexes implements Command<CacheValidateIndexes.Argume
             return checkThrough;
         }
 
-
         /**
          * @return Node id.
          */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheViewer.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheViewer.java
index 654d6f8..4899cd5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheViewer.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/CacheViewer.java
@@ -177,7 +177,6 @@ public class CacheViewer implements Command<CacheViewer.Arguments> {
                 printCacheInfos(res.cacheInfos(), args.cacheCommand(), logger);
         }
 
-
         return res;
     }
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/IdleVerify.java b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/IdleVerify.java
index f249fc8..70e5275 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/IdleVerify.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/commandline/cache/IdleVerify.java
@@ -158,7 +158,6 @@ public class IdleVerify implements Command<IdleVerify.Arguments> {
             return idleCheckCrc;
         }
 
-
         /**
          * @return Skip zeros partitions(size == 0) in result.
          */
@@ -300,7 +299,6 @@ public class IdleVerify implements Command<IdleVerify.Arguments> {
         logger.log("VisorIdleVerifyDumpTask successfully written output to '" + path + "'");
     }
 
-
     /**
      * @param client Client.
      * @param clientCfg Client configuration.
@@ -318,7 +316,6 @@ public class IdleVerify implements Command<IdleVerify.Arguments> {
         res.print(System.out::print);
     }
 
-
     /**
      * @param client Client.
      * @param clientCfg Client configuration.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/jdbc/JdbcUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/jdbc/JdbcUtils.java
index 7bb1d8b..68bbb24 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/jdbc/JdbcUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/jdbc/JdbcUtils.java
@@ -46,6 +46,7 @@ import static java.sql.Types.TIMESTAMP;
 import static java.sql.Types.TINYINT;
 import static java.sql.Types.VARCHAR;
 import static java.sql.Types.DECIMAL;
+
 /**
  * Utility methods for JDBC driver.
  *
@@ -253,4 +254,4 @@ class JdbcUtils {
             float.class.getName().equals(cls) ||
             double.class.getName().equals(cls));
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcBlob.java b/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcBlob.java
index d1610d1..2109f7e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcBlob.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcBlob.java
@@ -86,7 +86,6 @@ public class JdbcBlob implements Blob {
                 "greater than size of underlying byte array. Requested length can't be negative and can't be " +
                 "greater than available bytes from given position [pos=" + pos + ", len=" + len +']');
 
-
         return new ByteArrayInputStream(arr, (int)(pos - 1), (int)len);
     }
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcUtils.java
index 9c3b5a1..f49cbfa 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/jdbc2/JdbcUtils.java
@@ -52,6 +52,7 @@ import static java.sql.Types.TIME;
 import static java.sql.Types.TIMESTAMP;
 import static java.sql.Types.TINYINT;
 import static java.sql.Types.VARCHAR;
+
 /**
  * Utility methods for JDBC driver.
  */
@@ -162,7 +163,6 @@ public class JdbcUtils {
         return QueryUtils.isSqlType(cls) || cls == URL.class;
     }
 
-
     /**
      * Convert exception to {@link SQLException}.
      *
@@ -311,7 +311,6 @@ public class JdbcUtils {
         return row;
     }
 
-
     /**
      * Normalize schema name. If it is quoted - unquote and leave as is, otherwise - convert to upper case.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/managers/communication/GridIoSecurityAwareMessage.java b/modules/core/src/main/java/org/apache/ignite/internal/managers/communication/GridIoSecurityAwareMessage.java
index 1760a4d..c1c7d97 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/managers/communication/GridIoSecurityAwareMessage.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/managers/communication/GridIoSecurityAwareMessage.java
@@ -30,6 +30,7 @@ import org.apache.ignite.plugin.extensions.communication.MessageWriter;
 public class GridIoSecurityAwareMessage extends GridIoMessage {
     /** */
     private static final long serialVersionUID = 0L;
+
     /** */
     public static final short TYPE_CODE = 174;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentManager.java b/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentManager.java
index 01d8604..f99f9fc 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentManager.java
@@ -551,7 +551,6 @@ public class GridDeploymentManager extends GridManagerAdapter<DeploymentSpi> {
         return ldr instanceof GridDeploymentClassLoader;
     }
 
-
     /**
      * @throws IgniteCheckedException If failed.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentPerVersionStore.java b/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentPerVersionStore.java
index 6a44d75..dc59092 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentPerVersionStore.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentPerVersionStore.java
@@ -943,7 +943,6 @@ public class GridDeploymentPerVersionStore extends GridDeploymentStoreAdapter {
                 for (Iterator<SharedDeployment> i2 = deps.iterator(); i2.hasNext();) {
                     SharedDeployment dep = i2.next();
 
-
                     if (dep.hasName(rsrcName)) {
                         if (!dep.undeployed()) {
                             dep.undeploy();
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java b/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
index 5fcf934..26da89e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
@@ -2242,7 +2242,6 @@ public class GridDiscoveryManager extends GridManagerAdapter<DiscoverySpi> {
         this.consistentId = consistentId;
     }
 
-
     /** @return Topology version. */
     public long topologyVersion() {
         return topSnap.get().topVer.topologyVersion();
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/marshaller/optimized/OptimizedObjectOutputStream.java b/modules/core/src/main/java/org/apache/ignite/internal/marshaller/optimized/OptimizedObjectOutputStream.java
index 1e191ec..0855ebf 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/marshaller/optimized/OptimizedObjectOutputStream.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/marshaller/optimized/OptimizedObjectOutputStream.java
@@ -818,6 +818,7 @@ public class OptimizedObjectOutputStream extends ObjectOutputStream {
 
         /** Fields info. */
         private final OptimizedClassDescriptor.ClassFields curFields;
+
         /** Values. */
         private final IgniteBiTuple<OptimizedFieldType, Object>[] objs;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/FullPageId.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/FullPageId.java
index 17c552d..2d9aa4d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/FullPageId.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/FullPageId.java
@@ -105,6 +105,7 @@ public class FullPageId {
 
         return z ^ (z >>> 32);
     }
+
     /**
      * @param pageId Page ID.
      * @param grpId Cache group ID.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageIdUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageIdUtils.java
index 1335269..ccf2937 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageIdUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/PageIdUtils.java
@@ -127,7 +127,6 @@ public final class PageIdUtils {
         return (pageId & ~EFFECTIVE_PAGE_ID_MASK) == 0;
     }
 
-
     /**
      * Index of the item inside of data page.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageMemoryNoStoreImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageMemoryNoStoreImpl.java
index adfbf44..e0ddd2b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageMemoryNoStoreImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/impl/PageMemoryNoStoreImpl.java
@@ -329,7 +329,6 @@ public class PageMemoryNoStoreImpl implements PageMemory {
             throw oom;
         }
 
-
         assert (relPtr & ~PageIdUtils.PAGE_IDX_MASK) == 0 : U.hexLong(relPtr & ~PageIdUtils.PAGE_IDX_MASK);
 
         // Assign page ID according to flags and partition ID.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastSuccessfulSnapshotId.java b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastSuccessfulSnapshotId.java
index c99fe46..e7f448c 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastSuccessfulSnapshotId.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/MetaPageUpdateLastSuccessfulSnapshotId.java
@@ -29,6 +29,7 @@ import org.apache.ignite.internal.util.typedef.internal.S;
 public class MetaPageUpdateLastSuccessfulSnapshotId extends PageDeltaRecord {
     /** */
     private final long lastSuccessfulSnapshotId;
+
     /** Last successful snapshot tag. */
     private final long lastSuccessfulSnapshotTag;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentCache.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentCache.java
index 53664b8..5659df9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentCache.java
@@ -590,6 +590,7 @@ public class GridAffinityAssignmentCache {
 
         return aff.assignment();
     }
+
     /**
      * @param topVer Topology version.
      * @return Affinity assignment.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2.java
index baee696..ddb5716 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2.java
@@ -108,7 +108,6 @@ public class GridAffinityAssignmentV2 extends IgniteDataTransferObject implement
         this.idealAssignment =
             idealAssignment.equals(assignment) ? this.assignment : Collections.unmodifiableList(idealAssignment);
 
-
         // Temporary mirrors with modifiable partition's collections.
         Map<UUID, Set<Integer>> tmpPrimary = new HashMap<>();
         Map<UUID, Set<Integer>> tmpBackup = new HashMap<>();
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityProcessor.java
index 81f6093..f6a4fc6 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/affinity/GridAffinityProcessor.java
@@ -247,7 +247,6 @@ public class GridAffinityProcessor extends GridProcessorAdapter {
             log.debug("Affinity cached values were cleared: " + (oldSize - affMap.size()));
     }
 
-
     /**
      * Maps keys to nodes for given cache.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/IgniteAuthenticationProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/IgniteAuthenticationProcessor.java
index 5a696f3..52147a7 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/IgniteAuthenticationProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/IgniteAuthenticationProcessor.java
@@ -1062,7 +1062,6 @@ public class IgniteAuthenticationProcessor extends GridProcessorAdapter implemen
         /** Error. */
         private IgniteCheckedException err;
 
-
         /**
          * @param opId User management operation ID.
          */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/UserManagementOperation.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/UserManagementOperation.java
index 35baf9c..5d4dd23 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/UserManagementOperation.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/authentication/UserManagementOperation.java
@@ -101,5 +101,5 @@ public class UserManagementOperation implements Serializable {
     /**
      * User action type.
      */
-    public enum OperationType {ADD, UPDATE, REMOVE};
+    public enum OperationType {ADD, UPDATE, REMOVE}
 }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java
index 68dffbf..60b8196 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheGroupContext.java
@@ -983,7 +983,6 @@ public class CacheGroupContext {
         this.contQryCaches = contQryCaches;
     }
 
-
     /**
      * Obtain the group listeners lock. Write lock should be held to register/unregister listeners. Read lock should be
      * hel for CQ listeners notification.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheMetricsSnapshot.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheMetricsSnapshot.java
index 0f6662a..f6357a8 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheMetricsSnapshot.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheMetricsSnapshot.java
@@ -751,6 +751,7 @@ public class CacheMetricsSnapshot implements CacheMetrics, Externalizable {
 
         return (float) offHeapMisses / offHeapGets * 100.0f;
     }
+
     /** {@inheritDoc} */
     @Override public long getOffHeapEntriesCount() {
         return offHeapEntriesCnt;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheWeakQueryIteratorsHolder.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheWeakQueryIteratorsHolder.java
index d414c80..68515cd 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheWeakQueryIteratorsHolder.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/CacheWeakQueryIteratorsHolder.java
@@ -130,7 +130,6 @@ public class CacheWeakQueryIteratorsHolder<V> {
         refs.clear();
     }
 
-
     /**
      * Iterator based of {@link CacheQueryFuture}.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/ClientCacheChangeDiscoveryMessage.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/ClientCacheChangeDiscoveryMessage.java
index ae76c95..8a969e6 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/ClientCacheChangeDiscoveryMessage.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/ClientCacheChangeDiscoveryMessage.java
@@ -40,7 +40,7 @@ public class ClientCacheChangeDiscoveryMessage implements DiscoveryCustomMessage
     private static final long serialVersionUID = 0L;
 
     /** */
-    private final IgniteUuid id = IgniteUuid.randomUuid();;
+    private final IgniteUuid id = IgniteUuid.randomUuid();
 
     /** */
     @GridToStringInclude
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java
index 7db51a5..b456172 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java
@@ -3427,7 +3427,6 @@ public abstract class GridCacheAdapter<K, V> implements IgniteInternalCache<K, V
             }
         }
 
-
         return isCacheMetricsV2Supported() ? new CacheMetricsSnapshotV2(ctx.cache().localMetrics(), metrics) :
             new CacheMetricsSnapshot(ctx.cache().localMetrics(), metrics);
     }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAttributes.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAttributes.java
index a1ae664..38a7ff9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAttributes.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAttributes.java
@@ -50,7 +50,6 @@ public class GridCacheAttributes implements Serializable {
     /** Cache configuration enrichment. */
     private CacheConfigurationEnrichment enrichment;
 
-
     /**
      * @param cfg Cache configuration.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheDeploymentManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheDeploymentManager.java
index f0f2ed3..0a70850 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheDeploymentManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheDeploymentManager.java
@@ -453,7 +453,6 @@ public class GridCacheDeploymentManager<K, V> extends GridCacheSharedManagerAdap
                     if (depInfo.removeParticipant(id))
                         deps.remove(ldrId, depInfo);
 
-
                     allParticipants.remove(id);
                 }
             }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheMapEntry.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheMapEntry.java
index 54dc706..f1b7ec7 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheMapEntry.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheMapEntry.java
@@ -1107,7 +1107,6 @@ public abstract class GridCacheMapEntry extends GridMetadataAwareAdapter impleme
             assert ttl >= 0 : ttl;
             assert expireTime >= 0 : expireTime;
 
-
             // Detach value before index update.
             val = cctx.kernalContext().cacheObjects().prepareForCache(val, cctx);
 
@@ -5105,7 +5104,6 @@ public abstract class GridCacheMapEntry extends GridMetadataAwareAdapter impleme
         /** Flag if it is need to return the old value (value before current tx has been started). */
         private final boolean needOldVal;
 
-
         /**
          *
          * @param tx Transaction.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java
index 0cc136b..c390c0a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java
@@ -2559,7 +2559,6 @@ public class GridCachePartitionExchangeManager<K, V> extends GridCacheSharedMana
         }
     }
 
-
     /**
      * For testing purposes. Stores discovery events with merged exchanges to enable examining them later.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManager.java
index 65d500c..17014fa 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManager.java
@@ -266,7 +266,6 @@ public class GridCacheTtlManager extends GridCacheManagerAdapter {
         return false;
     }
 
-
     /**
      * @param cctx1 First cache context.
      * @param key1 Left key to compare.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
index 751326a..7d2dc3e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheOffheapManagerImpl.java
@@ -3087,6 +3087,7 @@ public class IgniteCacheOffheapManagerImpl implements IgniteCacheOffheapManager
         private class MvccUpdateRowWithPreloadInfoClosure extends MvccDataRow implements OffheapInvokeClosure {
             /** */
             private CacheDataRow oldRow;
+
             /** */
             private IgniteTree.OperationType op;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataHolder.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataHolder.java
index 7a6ed37..4e783ca 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataHolder.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataHolder.java
@@ -36,7 +36,6 @@ final class BinaryMetadataHolder implements Serializable {
     /** */
     private final int acceptedVer;
 
-
     /**
      * @param metadata Metadata.
      * @param pendingVer Version of this metadata - how many updates were issued for this type.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheDistributedGetFutureAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheDistributedGetFutureAdapter.java
index fcc72bb..f42604a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheDistributedGetFutureAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheDistributedGetFutureAdapter.java
@@ -131,7 +131,6 @@ public abstract class CacheDistributedGetFutureAdapter<K, V>
     /** */
     protected Map<AffinityTopologyVersion, Map<Integer, Set<ClusterNode>>> invalidNodes = Collections.emptyMap();
 
-
     /**
      * @param cctx Context.
      * @param keys Keys.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCache.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCache.java
index bc3e2a9..a60bb2a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCache.java
@@ -80,7 +80,6 @@ public class GridDhtCache<K, V> extends GridDhtTransactionalCacheAdapter<K, V> {
 
         ctx.dr().resetMetrics();
 
-
         super.start();
     }
 
@@ -97,4 +96,4 @@ public class GridDhtCache<K, V> extends GridDhtTransactionalCacheAdapter<K, V> {
     public void near(GridNearTransactionalCache<K, V> near) {
         this.near = near;
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCacheAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCacheAdapter.java
index dddd392..dda54ab 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCacheAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtCacheAdapter.java
@@ -182,6 +182,7 @@ public abstract class GridDhtCacheAdapter<K, V> extends GridDistributedCacheAdap
             log.debug("Receive force key response for unknown future (is it duplicate?) [nodeId=" + node.id() +
                 ", res=" + msg + ']');
     }
+
     /**
      * @param node Node originated request.
      * @param msg Force keys message.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxAbstractEnlistFuture.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxAbstractEnlistFuture.java
index 77ca470..caaf20c 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxAbstractEnlistFuture.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxAbstractEnlistFuture.java
@@ -757,7 +757,6 @@ public abstract class GridDhtTxAbstractEnlistFuture<T> extends GridCacheFutureAd
                 && MvccUtils.compare(mvccSnapshot, row.newMvccCoordinatorVersion(), row.newMvccCounter()) != 0)
                 entry.newMvccTxState(row.newMvccTxState());
 
-
             assert mvccSnapshot.coordinatorVersion() != MvccUtils.MVCC_CRD_COUNTER_NA;
 
             res.add(entry);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java
index 1da003a..b8e45c9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java
@@ -2540,7 +2540,6 @@ public class GridDhtAtomicCache<K, V> extends GridDhtCacheAdapter<K, V> {
         GridDhtAtomicAbstractUpdateFuture dhtFut = dhtUpdRes.dhtFuture();
         Collection<IgniteBiTuple<GridDhtCacheEntry, GridCacheVersion>> deleted = dhtUpdRes.deleted();
 
-
         AffinityTopologyVersion topVer = req.topologyVersion();
 
         boolean intercept = ctx.config().getInterceptor() != null;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopology.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopology.java
index f2b0dd0..3416431 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopology.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/topology/GridDhtPartitionTopology.java
@@ -65,6 +65,7 @@ public interface GridDhtPartitionTopology {
      * @return {@code True} if locked by current thread.
      */
     public boolean holdsLock();
+
     /**
      * Updates topology version.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearTxQueryEnlistFuture.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearTxQueryEnlistFuture.java
index cd57cfb..da81e5b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearTxQueryEnlistFuture.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearTxQueryEnlistFuture.java
@@ -397,6 +397,7 @@ public class GridNearTxQueryEnlistFuture extends GridNearTxQueryAbstractEnlistFu
     private static class IntArrayHolder {
         /** */
         private int[] array;
+
         /** */
         private int size;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/DeadlockProbe.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/DeadlockProbe.java
index 47bad8c..582465c 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/DeadlockProbe.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/DeadlockProbe.java
@@ -38,12 +38,15 @@ public class DeadlockProbe implements Message {
 
     /** */
     private GridCacheVersion initiatorVer;
+
     /** */
     @GridToStringInclude
     @GridDirectCollection(ProbedTx.class)
     private Collection<ProbedTx> waitChain;
+
     /** */
     private ProbedTx blocker;
+
     /** */
     private boolean nearCheck;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java
index 6643b12..5a9132a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/MvccProcessorImpl.java
@@ -1820,6 +1820,7 @@ public class MvccProcessorImpl extends GridProcessorAdapter implements MvccProce
     private static class RecoveryBallotBox {
         /** */
         private List<UUID> voters;
+
         /** */
         private final Set<UUID> ballots = new HashSet<>();
 
@@ -1922,6 +1923,7 @@ public class MvccProcessorImpl extends GridProcessorAdapter implements MvccProce
     private static class LockFuture extends GridFutureAdapter<Void> implements Waiter, Runnable {
         /** */
         private final byte plc;
+
         /** */
         private final MvccVersion waitingTxVer;
 
@@ -2445,6 +2447,7 @@ public class MvccProcessorImpl extends GridProcessorAdapter implements MvccProce
     private static class ActiveTx {
         /** */
         private final long tracking;
+
         /** */
         private final UUID nearNodeId;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/ProbedTx.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/ProbedTx.java
index a13a37d..879fbd0 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/ProbedTx.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/ProbedTx.java
@@ -34,12 +34,16 @@ public class ProbedTx implements Message {
 
     /** */
     private UUID nodeId;
+
     /** */
     private GridCacheVersion xidVer;
+
     /** */
     private GridCacheVersion nearXidVer;
+
     /** */
     private long startTime;
+
     /** */
     private int lockCntr;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/StaticMvccQueryTracker.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/StaticMvccQueryTracker.java
index 552a16c..e191a16 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/StaticMvccQueryTracker.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/StaticMvccQueryTracker.java
@@ -28,6 +28,7 @@ import org.apache.ignite.internal.util.future.GridFinishedFuture;
 public class StaticMvccQueryTracker implements MvccQueryTracker {
     /** */
     private final MvccSnapshot snapshot;
+
     /** */
     private final GridCacheContext cctx;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/VacuumMetrics.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/VacuumMetrics.java
index 1de297f..1c1efb8 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/VacuumMetrics.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/VacuumMetrics.java
@@ -61,7 +61,6 @@ public class VacuumMetrics {
         return cleanupNanoTime;
     }
 
-
     /**
      * @param delta Delta.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/txlog/TxState.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/txlog/TxState.java
index 65a1f25..88570bc 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/txlog/TxState.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/mvcc/txlog/TxState.java
@@ -23,10 +23,13 @@ package org.apache.ignite.internal.processors.cache.mvcc.txlog;
 public final class TxState {
     /** */
     public static final byte NA         = 0x0;
+
     /** */
     public static final byte PREPARED   = 0x1;
+
     /** */
     public static final byte ABORTED    = 0x2;
+
     /** */
     public static final byte COMMITTED  = 0x3;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/CacheDataRowAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/CacheDataRowAdapter.java
index 5a27c32..8e30e9f 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/CacheDataRowAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/CacheDataRowAdapter.java
@@ -118,7 +118,6 @@ public class CacheDataRowAdapter implements CacheDataRow {
         initFromLink(grp, rowData, false);
     }
 
-
     /**
      * Read row from data pages.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheDatabaseSharedManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheDatabaseSharedManager.java
index 3c40cdf..7c63338 100755
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheDatabaseSharedManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/GridCacheDatabaseSharedManager.java
@@ -4464,8 +4464,10 @@ public class GridCacheDatabaseSharedManager extends IgniteCacheDatabaseSharedMan
         private class DbCheckpointContextImpl implements DbCheckpointListener.Context {
             /** Current checkpoint progress. */
             private final CheckpointProgress curr;
+
             /** Partition map. */
             private final PartitionAllocationMap map;
+
             /** Pending tasks from executor. */
             private GridCompoundFuture pendingTaskFuture;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/IgniteCacheDatabaseSharedManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/IgniteCacheDatabaseSharedManager.java
index d93c189..3202486 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/IgniteCacheDatabaseSharedManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/IgniteCacheDatabaseSharedManager.java
@@ -1200,7 +1200,6 @@ public class IgniteCacheDatabaseSharedManager extends GridCacheSharedManagerAdap
 
         File workDir = igniteHomeStr == null ? new File(path) : U.resolveWorkDirectory(igniteHomeStr, path, false);
 
-
         return new File(workDir, consId);
     }
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FileIOFactory.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FileIOFactory.java
index b236000..360847b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FileIOFactory.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FileIOFactory.java
@@ -39,7 +39,7 @@ public interface FileIOFactory extends Serializable {
      */
     default FileIO create(File file) throws IOException{
         return create(file, CREATE, READ, WRITE);
-    };
+    }
 
     /**
      * Creates I/O interface for file with specified mode.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FilePageStoreManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FilePageStoreManager.java
index 8ab5033..8337f2f 100755
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FilePageStoreManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/FilePageStoreManager.java
@@ -674,7 +674,6 @@ public class FilePageStoreManager extends GridCacheSharedManagerAdapter implemen
             if (dirExisted && !idxFile.exists())
                 grpsWithoutIdx.add(grpId);
 
-
             FileIOFactory pageStoreFileIoFactory = this.pageStoreFileIoFactory;
             FileIOFactory pageStoreV1FileIoFactory = this.pageStoreV1FileIoFactory;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetastorageLifecycleListener.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetastorageLifecycleListener.java
index 12cc446..db69bbc 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetastorageLifecycleListener.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetastorageLifecycleListener.java
@@ -33,7 +33,7 @@ public interface MetastorageLifecycleListener {
      *
      * @param metastorage Read-only meta storage.
      */
-    default void onReadyForRead(ReadOnlyMetastorage metastorage) throws IgniteCheckedException { };
+    default void onReadyForRead(ReadOnlyMetastorage metastorage) throws IgniteCheckedException { }
 
     /**
      * Fully functional metastore capable of performing reading and writing operations.
@@ -43,5 +43,5 @@ public interface MetastorageLifecycleListener {
      *
      * @param metastorage Fully functional meta storage.
      */
-    default void onReadyForReadWrite(ReadWriteMetastorage metastorage) throws IgniteCheckedException { };
+    default void onReadyForReadWrite(ReadWriteMetastorage metastorage) throws IgniteCheckedException { }
 }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetsatorageSearchRowImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetsatorageSearchRowImpl.java
index 363c14d..f6d7559 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetsatorageSearchRowImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/metastorage/MetsatorageSearchRowImpl.java
@@ -23,6 +23,7 @@ package org.apache.ignite.internal.processors.cache.persistence.metastorage;
 public class MetsatorageSearchRowImpl implements MetastorageSearchRow {
     /** */
     private final String key;
+
     /** */
     private final long link;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/IntervalBasedMeasurement.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/IntervalBasedMeasurement.java
index db4da6b..f2c1910 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/IntervalBasedMeasurement.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/IntervalBasedMeasurement.java
@@ -135,8 +135,6 @@ class IntervalBasedMeasurement {
         return nanosPassed <= 0 ? 0 : opsDone * NANOS_IN_SECOND / nanosPassed;
     }
 
-
-
     /**
      * @param interval Measurement to check. {@code null} is always outdated.
      * @param curNanoTime Current time in nanoseconds.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/LoadedPagesMap.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/LoadedPagesMap.java
index 1b23238..970a12a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/LoadedPagesMap.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/LoadedPagesMap.java
@@ -90,7 +90,6 @@ public interface LoadedPagesMap {
      */
     public ReplaceCandidate getNearestAt(int idxStart);
 
-
     /**
      * Removes entities matching provided predicate at specified mapping range.
      *
@@ -102,7 +101,6 @@ public interface LoadedPagesMap {
      */
     public GridLongList removeIf(int startIdxToClear, int endIdxToClear, KeyPredicate keyPred);
 
-
     /**
      * Removes entities matching provided predicate.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTree.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTree.java
index 7a3d30c..cb7d3be 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTree.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTree.java
@@ -1949,7 +1949,6 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure implements
         }
     }
 
-
     /**
      * @param row Lookup row.
      * @param needOld {@code True} if need return removed row.
@@ -2610,7 +2609,6 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure implements
         }
     }
 
-
     /**
      * @param c Get.
      * @throws IgniteCheckedException If failed.
@@ -3224,9 +3222,16 @@ public abstract class BPlusTree<L, T extends L> extends DataStructure implements
      * Get the last item in the tree which matches the passed filter.
      */
     private final class GetLast extends Get {
+        /** */
         private final TreeRowClosure<L, T> c;
+
+        /** */
         private boolean retry = true;
+
+        /** */
         private long lastPageId;
+
+        /** */
         private T row0;
 
         /**
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTreeRuntimeException.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTreeRuntimeException.java
index bd38978..3797d7e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTreeRuntimeException.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTreeRuntimeException.java
@@ -28,8 +28,10 @@ import org.apache.ignite.internal.util.typedef.T2;
 public class BPlusTreeRuntimeException extends RuntimeException {
     /** */
     private static final long serialVersionUID = 0L;
+
     /** Group id common for all potentially corrupted pages. */
     private final int grpId;
+
     /** Ids of potentially corrupted pages. */
     private final long[] pageIds;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/AbstractDataPageIO.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/AbstractDataPageIO.java
index a2e03e9..e6214b9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/AbstractDataPageIO.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/AbstractDataPageIO.java
@@ -418,7 +418,6 @@ public abstract class AbstractDataPageIO<T extends Storable> extends PageIO impl
             if (i > directCnt && itemId(getItem(pageAddr, i - 1)) >= itemId)
                 valid = false;
 
-
             b.a(itemId).a('^').a(directIdx);
         }
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/ByteBufferBackedDataInput.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/ByteBufferBackedDataInput.java
index 807a968..6384032 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/ByteBufferBackedDataInput.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/ByteBufferBackedDataInput.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.cache.persistence.wal;
 
-
 import java.io.DataInput;
 import java.io.IOException;
 import java.nio.ByteBuffer;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/FileWriteAheadLogManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/FileWriteAheadLogManager.java
index 4ccfc99..6acd8c2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/FileWriteAheadLogManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/FileWriteAheadLogManager.java
@@ -1398,7 +1398,6 @@ public class FileWriteAheadLogManager extends GridCacheSharedManagerAdapter impl
                     if (lsnr != null)
                         lsnr.apply(fileIO);
 
-
                     hnd = fileHandleManager.nextHandle(fileIO, serializer);
 
                     if (interrupted)
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/SegmentRouter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/SegmentRouter.java
index 8549f3a..ce14a75 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/SegmentRouter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/SegmentRouter.java
@@ -30,6 +30,7 @@ import static org.apache.ignite.internal.processors.cache.persistence.wal.FileDe
 public class SegmentRouter {
     /** */
     public static final String ZIP_SUFFIX = ".zip";
+
     /** */
     private File walWorkDir;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentArchivedStorage.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentArchivedStorage.java
index 57ac848..438b922 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentArchivedStorage.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentArchivedStorage.java
@@ -27,13 +27,16 @@ import org.apache.ignite.internal.IgniteInterruptedCheckedException;
 class SegmentArchivedStorage extends SegmentObservable {
     /** Segment lock storage: Protects WAL work segments from moving. */
     private final SegmentLockStorage segmentLockStorage;
+
     /** Flag of interrupt waiting on this object. */
     private volatile boolean interrupted;
+
     /**
      * Last archived file absolute index, 0-based. Write is quarded by {@code this}. Negative value indicates there are
      * no segments archived.
      */
     private volatile long lastAbsArchivedIdx = -1;
+
     /** Latest truncated segment. */
     private volatile long lastTruncatedArchiveIdx = -1;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentAware.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentAware.java
index b564aec..be60895 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentAware.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentAware.java
@@ -29,12 +29,16 @@ import static org.apache.ignite.internal.processors.cache.persistence.wal.aware.
 public class SegmentAware {
     /** Segment reservations storage: Protects WAL segments from deletion during WAL log cleanup. */
     private final SegmentReservationStorage reservationStorage = new SegmentReservationStorage();
+
     /** Lock on segment protects from archiving segment. */
     private final SegmentLockStorage segmentLockStorage = new SegmentLockStorage();
+
     /** Manages last archived index, emulates archivation in no-archiver mode. */
     private final SegmentArchivedStorage segmentArchivedStorage = buildArchivedStorage(segmentLockStorage);
+
     /** Storage of actual information about current index of compressed segments. */
     private final SegmentCompressStorage segmentCompressStorage;
+
     /** Storage of absolute current segment index. */
     private final SegmentCurrentStateStorage segmentCurrStateStorage;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentCurrentStateStorage.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentCurrentStateStorage.java
index d08a9b8..7339497 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentCurrentStateStorage.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/aware/SegmentCurrentStateStorage.java
@@ -25,12 +25,16 @@ import org.apache.ignite.internal.IgniteInterruptedCheckedException;
 class SegmentCurrentStateStorage {
     /** Flag of interrupt of waiting on this object. */
     private volatile boolean interrupted;
+
     /** Flag of force interrupt of waiting on this object. Needed for uninterrupted waiters. */
     private volatile boolean forceInterrupted;
+
     /** Total WAL segments count. */
     private final int walSegmentsCnt;
+
     /** Manages last archived index, emulates archivation in no-archiver mode. */
     private final SegmentArchivedStorage segmentArchivedStorage;
+
     /**
      * Absolute current segment index WAL Manager writes to. Guarded by <code>this</code>. Incremented during rollover.
      * Also may be directly set if WAL is resuming logging after start.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/crc/PureJavaCrc32.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/crc/PureJavaCrc32.java
index 3f348d7d..4c49be6 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/crc/PureJavaCrc32.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/crc/PureJavaCrc32.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.cache.persistence.wal.crc;
 
-
 import java.nio.ByteBuffer;
 
 /**
@@ -74,7 +73,6 @@ public class PureJavaCrc32 {
         crc = (crc >>> 8) ^ T[(((crc ^ b) << 24) >>> 24)];
     }
 
-
     /**
      * Calculates CRC32 checksum. This method will move buffer's position to {@code len} bytes forward.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileHandleManagerImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileHandleManagerImpl.java
index 66e8425..657eee6 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileHandleManagerImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileHandleManagerImpl.java
@@ -60,28 +60,40 @@ public class FileHandleManagerImpl implements FileHandleManager {
 
     /** WAL writer worker. */
     private final WALWriter walWriter;
+
     /** Wal segment sync worker. */
     private final WalSegmentSyncer walSegmentSyncWorker;
+
     /** Context. */
     protected final GridCacheSharedContext cctx;
+
     /** Logger. */
     private final IgniteLogger log;
+
     /** */
     private final WALMode mode;
+
     /** Persistence metrics tracker. */
     private final DataStorageMetricsImpl metrics;
+
     /** Use mapped byte buffer. */
     private final boolean mmap;
+
     /** Last WAL pointer. */
     private final Supplier<WALPointer> lastWALPtr;
+
     /** */
     private final RecordSerializer serializer;
+
     /** Current handle supplier. */
     private final Supplier<FileWriteHandle> currentHandleSupplier;
+
     /** WAL buffer size. */
     private final int walBufferSize;
+
     /** WAL segment size in bytes. . This is maximum value, actual segments may be shorter. */
     private final long maxWalSegmentSize;
+
     /** Fsync delay. */
     private final long fsyncDelay;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileWriteHandleImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileWriteHandleImpl.java
index 732fa9a..9f4ffcf 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileWriteHandleImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FileWriteHandleImpl.java
@@ -70,6 +70,7 @@ class FileWriteHandleImpl extends AbstractFileHandle implements FileWriteHandle
         MappedByteBuffer.class, "force0",
         java.io.FileDescriptor.class, long.class, long.class
     );
+
     /** {@link FileWriteHandleImpl#written} atomic field updater. */
     private static final AtomicLongFieldUpdater<FileWriteHandleImpl> WRITTEN_UPD =
         AtomicLongFieldUpdater.newUpdater(FileWriteHandleImpl.class, "written");
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileHandleManagerImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileHandleManagerImpl.java
index 9b219b7e..64754f4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileHandleManagerImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileHandleManagerImpl.java
@@ -36,22 +36,31 @@ import org.apache.ignite.internal.processors.cache.persistence.wal.serializer.Re
 public class FsyncFileHandleManagerImpl implements FileHandleManager {
     /** Context. */
     protected final GridCacheSharedContext cctx;
+
     /** Logger. */
     protected final IgniteLogger log;
+
     /** */
     private final WALMode mode;
+
     /** Persistence metrics tracker. */
     private final DataStorageMetricsImpl metrics;
+
     /** Last WAL pointer. */
     private final Supplier<WALPointer> lastWALPtr;
+
     /** */
     protected final RecordSerializer serializer;
+
     /** Current handle supplier. */
     private final Supplier<FileWriteHandle> currentHandleSupplier;
+
     /** WAL segment size in bytes. This is maximum value, actual segments may be shorter. */
     private final long maxWalSegmentSize;
+
     /** Fsync delay. */
     private final long fsyncDelay;
+
     /** Thread local byte buffer size. */
     private final int tlbSize;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileWriteHandle.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileWriteHandle.java
index dc4f473..9bfedd2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileWriteHandle.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/filehandle/FsyncFileWriteHandle.java
@@ -62,48 +62,65 @@ import static org.apache.ignite.internal.processors.cache.persistence.wal.serial
 class FsyncFileWriteHandle extends AbstractFileHandle implements FileWriteHandle {
     /** */
     private final RecordSerializer serializer;
+
     /** Max segment size. */
     private final long maxSegmentSize;
+
     /** Serializer latest version to use. */
     private final int serializerVersion =
         IgniteSystemProperties.getInteger(IGNITE_WAL_SERIALIZER_VERSION, LATEST_SERIALIZER_VERSION);
+
     /**
      * Accumulated WAL records chain. This reference points to latest WAL record. When writing records chain is iterated
      * from latest to oldest (see {@link WALRecord#previous()}) Records from chain are saved into buffer in reverse
      * order
      */
     private final AtomicReference<WALRecord> head = new AtomicReference<>();
+
     /**
      * Position in current file after the end of last written record (incremented after file channel write operation)
      */
     private volatile long written;
+
     /** */
     private volatile long lastFsyncPos;
+
     /** Stop guard to provide warranty that only one thread will be successful in calling {@link #close(boolean)} */
     private final AtomicBoolean stop = new AtomicBoolean(false);
+
     /** */
     private final Lock lock = new ReentrantLock();
+
     /** Condition activated each time writeBuffer() completes. Used to wait previously flushed write to complete */
     private final Condition writeComplete = lock.newCondition();
+
     /** Condition for timed wait of several threads, see {@link DataStorageConfiguration#getWalFsyncDelayNanos()} */
     private final Condition fsync = lock.newCondition();
+
     /**
      * Next segment available condition. Protection from "spurious wakeup" is provided by predicate {@link
      * #fileIO}=<code>null</code>
      */
     private final Condition nextSegment = lock.newCondition();
+
     /** */
     private final WALMode mode;
+
     /** Thread local byte buffer size, see {@link #tlb} */
     private final int tlbSize;
+
     /** Context. */
     protected final GridCacheSharedContext cctx;
+
     /** Persistence metrics tracker. */
     private final DataStorageMetricsImpl metrics;
+
     /** Logger. */
     protected final IgniteLogger log;
+
     /** Fsync delay. */
     private final long fsyncDelay;
+
     /** Switch segment record offset. */
     private int switchSegmentRecordOffset;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedReadFileInput.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedReadFileInput.java
index 6e5a7a4..6bb4786 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedReadFileInput.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedReadFileInput.java
@@ -32,10 +32,13 @@ import org.apache.ignite.internal.processors.cache.persistence.wal.aware.Segment
 final class LockedReadFileInput extends SimpleFileInput {
     /** Segment for read. */
     private final long segmentId;
+
     /** Holder of actual information of latest manipulation on WAL segments. */
     private final SegmentAware segmentAware;
+
     /** Factory of file I/O for segment. */
     private final SegmentIoFactory fileIOFactory;
+
     /** Last read was from archive or not. */
     private boolean isLastReadFromArchive;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedSegmentFileInputFactory.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedSegmentFileInputFactory.java
index f3cdda7..462d9f9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedSegmentFileInputFactory.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/io/LockedSegmentFileInputFactory.java
@@ -33,8 +33,10 @@ import org.apache.ignite.internal.processors.cache.persistence.wal.SegmentRouter
 public class LockedSegmentFileInputFactory implements SegmentFileInputFactory {
     /** Holder of actual information of latest manipulation on WAL segments. */
     private final SegmentAware segmentAware;
+
     /** Manager of segment location. */
     private final SegmentRouter segmentRouter;
+
     /** {@link FileIO} factory definition.*/
     private final FileIOFactory fileIOFactory;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/IgniteWalIteratorFactory.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/IgniteWalIteratorFactory.java
index 118a3db..6bca9b4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/IgniteWalIteratorFactory.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/IgniteWalIteratorFactory.java
@@ -389,6 +389,7 @@ public class IgniteWalIteratorFactory {
     public static class IteratorParametersBuilder {
         /** Logger. */
         private IgniteLogger log;
+
         /** */
         public static final FileWALPointer DFLT_LOW_BOUND = new FileWALPointer(Long.MIN_VALUE, 0, 0);
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIterator.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIterator.java
index d9e8607..bdce333 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIterator.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIterator.java
@@ -80,6 +80,7 @@ class StandaloneWalRecordsIterator extends AbstractWalRecordsIterator {
 
     /** Factory to provide I/O interfaces for read primitives with files. */
     private static final SegmentFileInputFactory FILE_INPUT_FACTORY = new SimpleSegmentFileInputFactory();
+
     /**
      * File descriptors remained to scan.
      * <code>null</code> value means directory scan mode
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/RecordSerializerFactoryImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/RecordSerializerFactoryImpl.java
index 96b78e6..9e46b51 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/RecordSerializerFactoryImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/RecordSerializerFactoryImpl.java
@@ -52,6 +52,7 @@ public class RecordSerializerFactoryImpl implements RecordSerializerFactory {
     public RecordSerializerFactoryImpl(GridCacheSharedContext cctx) {
         this(cctx, null);
     }
+
     /**
      * @param cctx Cctx.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/SegmentHeader.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/SegmentHeader.java
index 8f7e738..7eb55be 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/SegmentHeader.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/SegmentHeader.java
@@ -25,6 +25,7 @@ import org.apache.ignite.internal.util.typedef.internal.S;
 public class SegmentHeader {
     /** Serializer version. */
     private int serializerVersion;
+
     /** Compacted flag. */
     private boolean isCompacted;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/TxRecordSerializer.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/TxRecordSerializer.java
index 47915fd..1fa1fad 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/TxRecordSerializer.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/wal/serializer/TxRecordSerializer.java
@@ -249,7 +249,6 @@ public class TxRecordSerializer {
         buf.putLong(rec.timestamp());
     }
 
-
     /**
      * Returns size of marshalled {@link TxRecord} in bytes.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryAdapter.java
index f69dd0c..e304e05 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryAdapter.java
@@ -962,6 +962,7 @@ public class GridCacheQueryAdapter<T> implements CacheQuery<T> {
     private static class MvccTrackingIterator implements GridCloseableIterator {
         /** Serial version uid. */
         private static final long serialVersionUID = -1905248502802333832L;
+
         /** Underlying iterator. */
         private final GridCloseableIterator it;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryBean.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryBean.java
index 286ddc2..4dcb882 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryBean.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheQueryBean.java
@@ -72,8 +72,6 @@ public class GridCacheQueryBean {
      * @return Transformer.
      */
     @Nullable public IgniteClosure<?, ?> transform() {
-
-
         return trans;
     }
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/QueryEntityIndexDescriptor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/QueryEntityIndexDescriptor.java
index 0436f10..0981b60 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/QueryEntityIndexDescriptor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/QueryEntityIndexDescriptor.java
@@ -41,6 +41,7 @@ public class QueryEntityIndexDescriptor implements GridQueryIndexDescriptor {
                 return o1.get2() < o2.get2() ? -1 : 1;
             }
         });
+
     /** */
     private final QueryIndexType type;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalAdapter.java
index 55376f9..db5ce19 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalAdapter.java
@@ -1002,7 +1002,6 @@ public abstract class IgniteTxLocalAdapter extends IgniteTxAdapter implements Ig
         }
     }
 
-
     /**
      * Commits transaction to transaction manager. Used for one-phase commit transactions only.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalStateAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalStateAdapter.java
index 9c6ef8f..0b4c05e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalStateAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxLocalStateAdapter.java
@@ -33,6 +33,7 @@ import org.apache.ignite.internal.util.typedef.internal.U;
 public abstract class IgniteTxLocalStateAdapter implements IgniteTxLocalState {
     /** */
     private static final Function<Integer, Set<Integer>> CREATE_INT_SET = k -> new HashSet<>();
+
     /** */
     private Map<Integer, Set<Integer>> touchedParts;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java
index 87bd905..9a00533 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/IgniteTxManager.java
@@ -2597,6 +2597,7 @@ public class IgniteTxManager extends GridCacheSharedManagerAdapter {
     private final class NodeFailureTimeoutObject extends GridTimeoutObjectAdapter {
         /** */
         private final ClusterNode node;
+
         /** */
         private final MvccCoordinator mvccCrd;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/PartitionCountersNeighborcastFuture.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/PartitionCountersNeighborcastFuture.java
index 9e65b56..93e3ef2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/PartitionCountersNeighborcastFuture.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/transactions/PartitionCountersNeighborcastFuture.java
@@ -46,13 +46,17 @@ import static org.apache.ignite.internal.managers.communication.GridIoPolicy.SYS
 public class PartitionCountersNeighborcastFuture extends GridCacheCompoundIdentityFuture<Void> {
     /** */
     private final IgniteUuid futId = IgniteUuid.randomUuid();
+
     /** */
     @GridToStringExclude
     private boolean trackable = true;
+
     /** */
     private final GridCacheSharedContext<?, ?> cctx;
+
     /** */
     private final IgniteInternalTx tx;
+
     /** */
     private final IgniteLogger log;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/mvcc/data/MvccUpdateDataRow.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/mvcc/data/MvccUpdateDataRow.java
index d240cd0..b527ec4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/mvcc/data/MvccUpdateDataRow.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/tree/mvcc/data/MvccUpdateDataRow.java
@@ -81,6 +81,7 @@ public class MvccUpdateDataRow extends MvccDataRow implements MvccUpdateResult,
 
     /** */
     private static final int NEED_HISTORY = REMOVE_OR_LOCK << 1;
+
     /**
      * During mvcc transaction processing conflicting row version could be met in storage.
      * Not all such cases should lead to transaction abort.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/version/GridCacheVersion.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/version/GridCacheVersion.java
index 07388e0..c9987cd 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/version/GridCacheVersion.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/version/GridCacheVersion.java
@@ -81,7 +81,6 @@ public class GridCacheVersion implements Message, Comparable<GridCacheVersion>,
         nodeOrderDrId = nodeOrder | (dataCenterId << DR_ID_SHIFT);
     }
 
-
     /**
      * @param topVer Topology version plus number of seconds from the start time of the first grid node.
      * @param nodeOrderDrId Node order and DR ID.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineAdjustForbiddenException.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineAdjustForbiddenException.java
index d99a53f..d062dae 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineAdjustForbiddenException.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineAdjustForbiddenException.java
@@ -25,9 +25,11 @@ import org.apache.ignite.IgniteException;
 public class BaselineAdjustForbiddenException extends IgniteException {
     /** */
     private static final long serialVersionUID = 0L;
+
     /** */
     private static final String BASELINE_AUTO_ADJUST_ENABLED =
         "Baseline auto-adjust is enabled, please turn-off it before try to adjust baseline manually";
+
     /** */
     private static final String BASELINE_AUTO_ADJUST_DISABLED =
         "Baseline auto-adjust is disabled";
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineTopology.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineTopology.java
index 775f662..47f7cf3 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineTopology.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/BaselineTopology.java
@@ -254,7 +254,6 @@ public class BaselineTopology implements Serializable {
         return compactIdMapping.get(constId);
     }
 
-
     /**
      * @return Activation hash.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustData.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustData.java
index bb393a3..07d01e3 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustData.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustData.java
@@ -23,11 +23,13 @@ package org.apache.ignite.internal.processors.cluster.baseline.autoadjust;
 class BaselineAutoAdjustData {
     /** Task represented NULL value is using when normal task can not be created. */
     public static final BaselineAutoAdjustData NULL_BASELINE_DATA = nullValue();
+
     /** Topology version nodes of which should be set to baseline by this task. */
     private final long targetTopologyVersion;
 
     /** {@code true} If this data don't actual anymore and it setting should be skipped. */
     private volatile boolean invalidated = false;
+
     /** {@code true} If this data was adjusted. */
     private volatile boolean adjusted = false;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustExecutor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustExecutor.java
index 627bb41..c3644d5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustExecutor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustExecutor.java
@@ -31,12 +31,16 @@ import org.apache.ignite.internal.cluster.IgniteClusterImpl;
 class BaselineAutoAdjustExecutor {
     /** */
     private final IgniteLogger log;
+
     /** */
     private final IgniteClusterImpl cluster;
+
     /** Service for execute this task in async. */
     private final ExecutorService executorService;
+
     /** {@code true} if baseline auto-adjust enabled. */
     private final BooleanSupplier isBaselineAutoAdjustEnabled;
+
     /** This protect from execution more than one task at same moment. */
     private final Lock executionGuard = new ReentrantLock();
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustScheduler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustScheduler.java
index bd9c6d1..4815663 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustScheduler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustScheduler.java
@@ -33,10 +33,13 @@ import static org.apache.ignite.IgniteSystemProperties.getLong;
 class BaselineAutoAdjustScheduler {
     /** Timeout processor. */
     private final GridTimeoutProcessor timeoutProcessor;
+
     /** Executor of set baseline operation. */
     private final BaselineAutoAdjustExecutor baselineAutoAdjustExecutor;
+
     /** Last scheduled task for adjust new baseline. It needed for removing from queue. */
     private BaselineMultiplyUseTimeoutObject baselineTimeoutObj;
+
     /** */
     private final IgniteLogger log;
 
@@ -92,19 +95,25 @@ class BaselineAutoAdjustScheduler {
         /** Interval between logging of info about next baseline auto-adjust. */
         private static final long AUTO_ADJUST_LOG_INTERVAL =
             getLong(IGNITE_BASELINE_AUTO_ADJUST_LOG_INTERVAL, 60_000);
+
         /** Last data for set new baseline. */
         private final BaselineAutoAdjustData baselineAutoAdjustData;
+
         /** Executor of set baseline operation. */
         private final BaselineAutoAdjustExecutor baselineAutoAdjustExecutor;
+
         /** Timeout processor. */
         private final GridTimeoutProcessor timeoutProcessor;
+
         /** */
         private final IgniteLogger log;
 
         /** End time of whole life of this object. It represent time when auto-adjust will be executed. */
         private final long totalEndTime;
+
         /** Timeout ID. */
         private final IgniteUuid id = IgniteUuid.randomUuid();
+
         /** End time of one iteration of this timeout object. */
         private long endTime;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustStatus.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustStatus.java
index e7f8d98..a98fa77 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustStatus.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/BaselineAutoAdjustStatus.java
@@ -23,6 +23,7 @@ package org.apache.ignite.internal.processors.cluster.baseline.autoadjust;
 public class BaselineAutoAdjustStatus {
     /** Timeout of task of baseline adjust. */
     private final long timeUntilAutoAdjust;
+
     /** State of baseline adjust task. */
     private final TaskState taskState;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/ChangeTopologyWatcher.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/ChangeTopologyWatcher.java
index a11a4ec..7af8902 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/ChangeTopologyWatcher.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/baseline/autoadjust/ChangeTopologyWatcher.java
@@ -39,16 +39,22 @@ import static org.apache.ignite.internal.util.IgniteUtils.isLocalNodeCoordinator
 public class ChangeTopologyWatcher implements GridLocalEventListener {
     /** */
     private final IgniteLogger log;
+
     /** */
     private final IgniteClusterImpl cluster;
+
     /** */
     private final GridCachePartitionExchangeManager<?, ?> exchangeManager;
+
     /** Configuration of baseline. */
     private final DistributedBaselineConfiguration baselineConfiguration;
+
     /** Discovery manager. */
     private final GridDiscoveryManager discoveryMgr;
+
     /** */
     private final GridClusterStateProcessor stateProcessor;
+
     /** Scheduler of specific task of baseline changing. */
     private final BaselineAutoAdjustScheduler baselineAutoAdjustScheduler;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DetachedPropertyException.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DetachedPropertyException.java
index bcd9ae9..6cac5cf 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DetachedPropertyException.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DetachedPropertyException.java
@@ -25,6 +25,7 @@ import org.apache.ignite.IgniteCheckedException;
 public class DetachedPropertyException extends IgniteCheckedException {
     /** */
     private static final long serialVersionUID = 0L;
+
     /**
      * @param name Name of detached property.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DistributedProperty.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DistributedProperty.java
index e2e075c..19787f3 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DistributedProperty.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/DistributedProperty.java
@@ -31,12 +31,16 @@ import org.jetbrains.annotations.NotNull;
 public class DistributedProperty<T extends Serializable> {
     /** Name of property. */
     private final String name;
+
     /** Property value. */
     protected volatile T val;
+
     /** Sign of attachment to the processor. */
     private volatile boolean attached = false;
+
     /** Listeners of property update. */
     private final ConcurrentLinkedQueue<DistributePropertyListener<T>> updateListeners = new ConcurrentLinkedQueue<>();
+
     /**
      * Specific consumer for update value in cluster. It is null when property doesn't ready to update value on cluster
      * wide.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/NotWritablePropertyException.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/NotWritablePropertyException.java
index cd2780d..cfa241f 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/NotWritablePropertyException.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/configuration/distributed/NotWritablePropertyException.java
@@ -25,6 +25,7 @@ import org.apache.ignite.IgniteCheckedException;
 public class NotWritablePropertyException extends IgniteCheckedException {
     /** */
     private static final long serialVersionUID = 0L;
+
     /**
      * @param name Name of detached property.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/DataStructuresProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/DataStructuresProcessor.java
index cc799fc..5378d77 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/DataStructuresProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/DataStructuresProcessor.java
@@ -717,7 +717,6 @@ public final class DataStructuresProcessor extends GridProcessorAdapter implemen
         }
     }
 
-
     /**
      * Would return this cache to normal work if it was suspened (and if it is atomics cache).
      * @param cacheName To restart.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessor.java
index e03f99b..ba6a601 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessor.java
@@ -44,12 +44,16 @@ import static org.apache.ignite.internal.util.IgniteStopwatch.logTime;
 public class DiagnosticProcessor extends GridProcessorAdapter {
     /** Time formatter for dump file name. */
     private static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH-mm-ss_SSS");
+
     /** Folder name for store diagnostic info. **/
     static final String DEFAULT_TARGET_FOLDER = "diagnostic";
+
     /** File format. */
     static final String FILE_FORMAT = ".txt";
+
     /** Raw file format. */
     static final String RAW_FILE_FORMAT = ".raw";
+
     /** Full path for store dubug info. */
     private final Path diagnosticPath;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/PageHistoryDiagnoster.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/PageHistoryDiagnoster.java
index 05b3c4c..e203924 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/PageHistoryDiagnoster.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/diagnostic/PageHistoryDiagnoster.java
@@ -60,6 +60,7 @@ public class PageHistoryDiagnoster {
     /** Kernal context. */
     @GridToStringExclude
     protected final GridKernalContext ctx;
+
     /** Diagnostic logger. */
     @GridToStringExclude
     protected final IgniteLogger log;
@@ -307,8 +308,10 @@ public class PageHistoryDiagnoster {
     public static class DiagnosticPageBuilder {
         /** Pages for searching in WAL. */
         List<T2<Integer, Long>> pageIds = new ArrayList<>();
+
         /** Action after which should be executed after WAL scanning . */
         Set<DiagnosticProcessor.DiagnosticAction> actions = EnumSet.noneOf(DiagnosticProcessor.DiagnosticAction.class);
+
         /** Folder for dump diagnostic info. */
         File dumpFolder;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobStatus.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobStatus.java
index a9a247a..5dd74dd 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobStatus.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobStatus.java
@@ -51,6 +51,7 @@ public class HadoopJobStatus implements Externalizable {
 
     /** Total reducers count. */
     private int totalReducerCnt;
+
     /** Phase. */
     private HadoopJobPhase jobPhase;
 
@@ -207,4 +208,4 @@ public class HadoopJobStatus implements Externalizable {
         failed = in.readBoolean();
         ver = in.readLong();
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java
index 9184f5ee..68f76c2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDataManager.java
@@ -465,7 +465,6 @@ public class IgfsDataManager extends IgfsManager {
         }
     }
 
-
     /**
      * Registers write future in igfs data manager.
      *
@@ -1745,4 +1744,4 @@ public class IgfsDataManager extends IgfsManager {
                 onDone(true);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsImpl.java
index 5931d40..6d33bda 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsImpl.java
@@ -454,6 +454,7 @@ public final class IgfsImpl implements IgfsEx {
             }
         });
     }
+
     /** {@inheritDoc} */
     @Override public long groupBlockSize() {
         return data.groupBlockSize();
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsInputStreamImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsInputStreamImpl.java
index a24f8dc..ec4b4ad 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsInputStreamImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsInputStreamImpl.java
@@ -211,7 +211,6 @@ public class IgfsInputStreamImpl extends IgfsInputStream implements IgfsSecondar
         if (pos < 0)
             throw new IOException("Seek position cannot be negative: " + pos);
 
-
         this.pos = pos;
     }
 
@@ -599,4 +598,4 @@ public class IgfsInputStreamImpl extends IgfsInputStream implements IgfsSecondar
     @Override public String toString() {
         return S.toString(IgfsInputStreamImpl.class, this);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsMetaManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsMetaManager.java
index ec51971..90feb5d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsMetaManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsMetaManager.java
@@ -2207,8 +2207,6 @@ public class IgfsMetaManager extends IgfsManager {
         }
         else
             throw new IllegalStateException("Failed to synchronize file because Grid is stopping: " + path);
-
-
     }
 
     /**
@@ -3402,4 +3400,4 @@ public class IgfsMetaManager extends IgfsManager {
          */
         public T onFailure(Exception err) throws IgniteCheckedException;
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsPathIds.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsPathIds.java
index 9b30913..7cc953d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsPathIds.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsPathIds.java
@@ -189,7 +189,6 @@ public class IgfsPathIds {
         return lastExistingIdx == ids.length - 1;
     }
 
-
     /**
      * Whether parent of the last entry exists.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsUtils.java
index fa35aa9..9a9fc31 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsUtils.java
@@ -423,7 +423,6 @@ public class IgfsUtils {
 
                 ccfgs.add(ccfgData);
 
-
                 // No copy-on-read.
                 ccfgMeta.setCopyOnRead(false);
                 ccfgData.setCopyOnRead(false);
@@ -522,7 +521,6 @@ public class IgfsUtils {
         }
     }
 
-
     /**
      * @return Default IGFS cache configuration.
      */
@@ -1226,4 +1224,4 @@ public class IgfsUtils {
             return sb.toString();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/client/meta/IgfsClientMetaUnlockCallable.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/client/meta/IgfsClientMetaUnlockCallable.java
index 26c3166..50c7651 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/client/meta/IgfsClientMetaUnlockCallable.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/client/meta/IgfsClientMetaUnlockCallable.java
@@ -53,6 +53,7 @@ public class IgfsClientMetaUnlockCallable extends IgfsClientAbstractCallable<Voi
 
     /** Aff range. */
     private IgfsFileAffinityRange affRange;
+
     /**
      * Default constructor.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcParameterMeta.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcParameterMeta.java
index 52e5a19..7da9b79 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcParameterMeta.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcParameterMeta.java
@@ -53,7 +53,6 @@ public class JdbcParameterMeta implements JdbcRawBinarylizable {
     /** Mode. */
     private int mode;
 
-
     /**
      * Default constructor is used for binary serialization.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/cache/affinity/PlatformAffinityFunction.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/cache/affinity/PlatformAffinityFunction.java
index 4206d40..f4580b4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/cache/affinity/PlatformAffinityFunction.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/cache/affinity/PlatformAffinityFunction.java
@@ -86,7 +86,6 @@ public class PlatformAffinityFunction implements AffinityFunction, Externalizabl
     /** */
     private transient PlatformAffinityFunctionTarget baseTarget;
 
-
     /**
      * Ctor for serialization.
      *
@@ -313,4 +312,4 @@ public class PlatformAffinityFunction implements AffinityFunction, Externalizabl
         if (baseFunc != null && ignite != null)
             ((IgniteEx)ignite).context().resource().injectGeneric(baseFunc);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheConfigurationSerializer.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheConfigurationSerializer.java
index 331b6d8..9c5b046 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheConfigurationSerializer.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheConfigurationSerializer.java
@@ -130,7 +130,6 @@ public class ClientCacheConfigurationSerializer {
     /** */
     private static final short STATISTICS_ENABLED = 406;
 
-
     /**
      * Writes the cache configuration.
      * @param writer Writer.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformConfigurationUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformConfigurationUtils.java
index b9d024c..4faec0d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformConfigurationUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformConfigurationUtils.java
@@ -2207,8 +2207,6 @@ public class PlatformConfigurationUtils {
         cfg.setLocalEventListeners(lsnrs);
     }
 
-
-
     /**
      * Private constructor.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformFutureUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformFutureUtils.java
index c8a6c19..437c405 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformFutureUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformFutureUtils.java
@@ -78,6 +78,7 @@ public class PlatformFutureUtils {
 
         return listenable;
     }
+
     /**
      * Listen future.
      *
@@ -444,4 +445,4 @@ public class PlatformFutureUtils {
             return fut.isCancelled();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformUtils.java
index fd86ca9..4881e5c 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/utils/PlatformUtils.java
@@ -979,6 +979,7 @@ public class PlatformUtils {
 
         return map0;
     }
+
     /**
      * Create Java object.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/GridQueryProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/GridQueryProcessor.java
index 93839d2..10d9de5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/GridQueryProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/GridQueryProcessor.java
@@ -914,7 +914,6 @@ public class GridQueryProcessor extends GridProcessorAdapter {
             onCacheStop(cacheInfo, true);
     }
 
-
     /**
      * @param cacheInfo Cache context info.
      * @param removeIdx If {@code true}, will remove index.
@@ -2982,7 +2981,6 @@ public class GridQueryProcessor extends GridProcessorAdapter {
         }
     }
 
-
     /**
      * @return Value object context.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryUtils.java
index aede61a..cc7bc67 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryUtils.java
@@ -185,7 +185,6 @@ public class QueryUtils {
         return indexName(tableName(entity), idx);
     }
 
-
     /**
      * Get index name.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/messages/GridQueryKillResponse.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/messages/GridQueryKillResponse.java
index d659e99..e292a31 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/messages/GridQueryKillResponse.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/messages/GridQueryKillResponse.java
@@ -40,7 +40,6 @@ public class GridQueryKillResponse implements Message {
     /** Error text. */
     private String errMsg;
 
-
     /**
      * Default constructor.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cache/GridCacheCommandHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cache/GridCacheCommandHandler.java
index 88a0ddd..f3c3935 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cache/GridCacheCommandHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cache/GridCacheCommandHandler.java
@@ -883,16 +883,22 @@ public class GridCacheCommandHandler extends GridRestCommandHandlerAdapter {
     private static class FlaggedCacheOperationCallable implements Callable<GridRestResponse>, Serializable {
         /** */
         private static final long serialVersionUID = 0L;
+
         /** */
         private final String cacheName;
+
         /** */
         private final Set<GridClientCacheFlag> cacheFlags;
+
         /** */
         private final CacheProjectionCommand op;
+
         /** */
         private final Object key;
+
         /** Client ID. */
         private UUID clientId;
+
         /** */
         @IgniteInstanceResource
         private Ignite g;
@@ -941,14 +947,19 @@ public class GridCacheCommandHandler extends GridRestCommandHandlerAdapter {
     private static class CacheOperationCallable implements Callable<GridRestResponse>, Serializable {
         /** */
         private static final long serialVersionUID = 0L;
+
         /** */
         private final String cacheName;
+
         /** */
         private final CacheCommand op;
+
         /** */
         private final Object key;
+
         /** Client ID. */
         private UUID clientId;
+
         /** */
         @IgniteInstanceResource
         private Ignite g;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cluster/GridBaselineCommandHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cluster/GridBaselineCommandHandler.java
index 88fde87..ad9e6cb 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cluster/GridBaselineCommandHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/cluster/GridBaselineCommandHandler.java
@@ -71,7 +71,6 @@ public class GridBaselineCommandHandler extends GridRestCommandHandlerAdapter {
         assert SUPPORTED_COMMANDS.contains(req.command());
         assert req instanceof GridRestBaselineRequest : "Invalid type of baseline request.";
 
-
         if (log.isDebugEnabled())
             log.debug("Handling baseline REST request: " + req);
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/datastructures/DataStructuresCommandHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/datastructures/DataStructuresCommandHandler.java
index e3cdcf2..df4aabc 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/datastructures/DataStructuresCommandHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/datastructures/DataStructuresCommandHandler.java
@@ -73,6 +73,7 @@ public class DataStructuresCommandHandler extends GridRestCommandHandlerAdapter
             }
         );
     }
+
     /**
      * Handles increment and decrement commands.
      *
@@ -111,4 +112,4 @@ public class DataStructuresCommandHandler extends GridRestCommandHandlerAdapter
             }
         }, false);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/query/CacheQueryFieldsMetaResult.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/query/CacheQueryFieldsMetaResult.java
index 4c8a054..ef4ffdb 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/query/CacheQueryFieldsMetaResult.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/query/CacheQueryFieldsMetaResult.java
@@ -102,7 +102,6 @@ public class CacheQueryFieldsMetaResult implements Externalizable {
         this.fieldName = fieldName;
     }
 
-
     /**
      * @return Field type name.
      */
@@ -132,4 +131,4 @@ public class CacheQueryFieldsMetaResult implements Externalizable {
         fieldName = U.readString(in);
         fieldTypeName = U.readString(in);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/request/GridRestCacheRequest.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/request/GridRestCacheRequest.java
index 7e19245..e161812 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/request/GridRestCacheRequest.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/request/GridRestCacheRequest.java
@@ -136,7 +136,6 @@ public class GridRestCacheRequest extends GridRestRequest {
         this.vals = vals;
     }
 
-
     /**
      * @return Cache configuration.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlStrictParseException.java b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlStrictParseException.java
index c9f965e..aac9185 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlStrictParseException.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlStrictParseException.java
@@ -38,7 +38,6 @@ public class SqlStrictParseException extends SqlParseException {
         this(e.getMessage(), IgniteQueryErrorCode.PARSING, e);
     }
 
-
     /**
      * Constructor.
      * @param e SQL parse exception.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlCreateIndexCommand.java b/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlCreateIndexCommand.java
index 7cec8e8..51bfc65 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlCreateIndexCommand.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlCreateIndexCommand.java
@@ -186,7 +186,6 @@ public class SqlCreateIndexCommand implements SqlCommand {
         return parseIdentifier(lex, IF);
     }
 
-
     /**
      * @param lex Lexer.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridAnnotationsCache.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridAnnotationsCache.java
index d89ee97..200b990 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridAnnotationsCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridAnnotationsCache.java
@@ -61,7 +61,6 @@ public final class GridAnnotationsCache {
         return ann.get();
     }
 
-
     /**
      * @param ldr Undeployed class loader.
      */
@@ -80,4 +79,4 @@ public final class GridAnnotationsCache {
     private GridAnnotationsCache() {
         // No-op.
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicInteger.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicInteger.java
index d732767..f50443f 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicInteger.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicInteger.java
@@ -206,7 +206,6 @@ public class GridAtomicInteger extends AtomicInteger {
         }
     }
 
-
     /**
      * Sets value only if it is not equals to current one.
      *
@@ -245,4 +244,4 @@ public class GridAtomicInteger extends AtomicInteger {
                 return false;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicLong.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicLong.java
index 3b1a175..c754b3e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicLong.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridAtomicLong.java
@@ -206,7 +206,6 @@ public class GridAtomicLong extends AtomicLong {
         }
     }
 
-
     /**
      * Sets value only if it is not equals to current one.
      *
@@ -245,4 +244,4 @@ public class GridAtomicLong extends AtomicLong {
                 return false;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridBoundedConcurrentLinkedHashMap.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridBoundedConcurrentLinkedHashMap.java
index 7aa3734..dfc3bb6 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridBoundedConcurrentLinkedHashMap.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridBoundedConcurrentLinkedHashMap.java
@@ -92,6 +92,7 @@ public class GridBoundedConcurrentLinkedHashMap<K, V> extends ConcurrentLinkedHa
     public GridBoundedConcurrentLinkedHashMap(int max, int initCap, float loadFactor, int concurLvl) {
         this(max, initCap, loadFactor, concurLvl, SINGLE_Q);
     }
+
     /**
      * Creates a new, empty map with the specified initial
      * capacity, load factor and concurrency level.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridConfigurationFinder.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridConfigurationFinder.java
index 94acea3..d35ec92 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridConfigurationFinder.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridConfigurationFinder.java
@@ -80,7 +80,6 @@ public final class GridConfigurationFinder {
                 String s1 = t1.get1();
                 String s2 = t2.get1();
 
-
                 String q1 = s1.startsWith(Q_PREFIX) ? s1.substring(Q_PREFIX_LEN + 1) : s1;
                 String q2 = s2.startsWith(Q_PREFIX) ? s2.substring(Q_PREFIX_LEN + 1) : s2;
 
@@ -156,4 +155,4 @@ public final class GridConfigurationFinder {
 
         return paths;
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridLogThrottle.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridLogThrottle.java
index feae512..f5036fa 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridLogThrottle.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridLogThrottle.java
@@ -132,7 +132,6 @@ public class GridLogThrottle {
         log(log, e, msg, LogLevel.WARN, quite, byMsg);
     }
 
-
     /**
      * Logs warning if needed.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridReadOnlyArrayView.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridReadOnlyArrayView.java
index bbcae99..14ae0d5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridReadOnlyArrayView.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridReadOnlyArrayView.java
@@ -34,7 +34,6 @@ public class GridReadOnlyArrayView<T> extends AbstractCollection<T> {
     /** Array index view ends with (exclusive). */
     private final int to;
 
-
     /**
      * @param arr Array.
      * @param from Array index view starts from (inclusive).
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridReflectionCache.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridReflectionCache.java
index cd069f8..da6ae74 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridReflectionCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridReflectionCache.java
@@ -204,7 +204,6 @@ public class GridReflectionCache implements Externalizable {
         return fieldsList;
     }
 
-
     /**
      * Gets methods.
      *
@@ -254,4 +253,4 @@ public class GridReflectionCache implements Externalizable {
         fp = (IgnitePredicate<Field>)in.readObject();
         mp = (IgnitePredicate<Method>)in.readObject();
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java
index 9765849..573a602 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridUnsafe.java
@@ -1649,7 +1649,6 @@ public abstract class GridUnsafe {
         }
     }
 
-
     /**
      * @param obj Object.
      * @param off Offset.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteStopwatch.java b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteStopwatch.java
index cf7a186..496212c 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteStopwatch.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteStopwatch.java
@@ -85,10 +85,13 @@ import static java.util.concurrent.TimeUnit.SECONDS;
 public final class IgniteStopwatch {
     /** Ticker. */
     private final IgniteTicker ticker;
+
     /** Is running. */
     private boolean isRunning;
+
     /** Elapsed nanos. */
     private long elapsedNanos;
+
     /** Start tick. */
     private long startTick;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
index 223b87e..bb18c27 100755
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
@@ -3581,6 +3581,7 @@ public abstract class IgniteUtils {
 
         return e;
     }
+
     /**
      * Deletes file or directory with all sub-directories and files.
      *
@@ -8102,6 +8103,7 @@ public abstract class IgniteUtils {
             return false;
         }
     }
+
     /**
      * Gets object field offset.
      *
@@ -10691,7 +10693,6 @@ public abstract class IgniteUtils {
         return ctx.state().clusterState().baselineTopology();
     }
 
-
     /**
      * @param cctx Context.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/MutableSingletonList.java b/modules/core/src/main/java/org/apache/ignite/internal/util/MutableSingletonList.java
index 87b96de..89f72db 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/MutableSingletonList.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/MutableSingletonList.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.util;
 
-
 import java.util.AbstractList;
 
 /**
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/StripedCompositeReadWriteLock.java b/modules/core/src/main/java/org/apache/ignite/internal/util/StripedCompositeReadWriteLock.java
index 786d647..ba863e4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/StripedCompositeReadWriteLock.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/StripedCompositeReadWriteLock.java
@@ -129,7 +129,28 @@ public class StripedCompositeReadWriteLock implements ReadWriteLock {
         private static final long serialVersionUID = 0L;
 
         /** Padding. */
-        private long p0, p1, p2, p3, p4, p5, p6, p7;
+        private long p0;
+
+        /** */
+        private long p1;
+
+        /** */
+        private long p2;
+
+        /** */
+        private long p3;
+
+        /** */
+        private long p4;
+
+        /** */
+        private long p5;
+
+        /** */
+        private long p6;
+
+        /** */
+        private long p7;
     }
 
     /**
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/TimeBag.java b/modules/core/src/main/java/org/apache/ignite/internal/util/TimeBag.java
index 156d826..aa48f83 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/TimeBag.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/TimeBag.java
@@ -56,7 +56,6 @@ public class TimeBag {
     /** Thread-local stopwatch. */
     private final ThreadLocal<IgniteStopwatch> tlStopwatch = ThreadLocal.withInitial(IgniteStopwatch::createUnstarted);
 
-
     /**
      * Default constructor.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/gridify/GridifyUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/util/gridify/GridifyUtils.java
index 50af61a..43d0243 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/gridify/GridifyUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/gridify/GridifyUtils.java
@@ -233,7 +233,6 @@ public final class GridifyUtils {
             }
         }
 
-
         return false;
     }
 
@@ -533,4 +532,4 @@ public final class GridifyUtils {
             out.defaultWriteObject();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridFilenameUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridFilenameUtils.java
index 460d3b0..c98e66b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridFilenameUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridFilenameUtils.java
@@ -115,6 +115,7 @@ public class GridFilenameUtils {
      * The separator character that is the opposite of the system separator.
      */
     private static final char OTHER_SEPARATOR;
+
     static {
         if (isSystemWindows())
             OTHER_SEPARATOR = UNIX_SEPARATOR;
@@ -194,6 +195,7 @@ public class GridFilenameUtils {
     public static String normalize(String filename) {
         return doNormalize(filename, SYSTEM_SEPARATOR, true);
     }
+
     /**
      * Normalizes a path, removing double and single dot path steps.
      * <p>
@@ -1560,4 +1562,4 @@ public class GridFilenameUtils {
         }
 
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridReversedLinesFileReader.java b/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridReversedLinesFileReader.java
index 0473b5a..2cce27f 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridReversedLinesFileReader.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/io/GridReversedLinesFileReader.java
@@ -33,15 +33,19 @@ import java.nio.charset.UnsupportedCharsetException;
 @SuppressWarnings("ALL")
 public class GridReversedLinesFileReader implements Closeable {
     private final int blockSize;
+
     private final Charset encoding;
 
     private final RandomAccessFile randomAccessFile;
 
     private final long totalByteLength;
+
     private final long totalBlockCount;
 
     private final byte[][] newLineSequences;
+
     private final int avoidNewlineSplitBufferSize;
+
     private final int byteDecrement;
 
     private FilePart currentFilePart;
@@ -336,4 +340,4 @@ public class GridReversedLinesFileReader implements Closeable {
             return 0;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMap.java b/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMap.java
index c1e1bfa..f54910e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMap.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMap.java
@@ -155,7 +155,6 @@ public interface GridOffHeapPartitionedMap {
      */
     public long size();
 
-
     /**
      * Gets number of elements in the map.
      *
@@ -247,4 +246,4 @@ public interface GridOffHeapPartitionedMap {
      *      another listener already exists.
      */
     public boolean eventListener(GridOffHeapEventListener lsnr);
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/typedef/PCE.java b/modules/core/src/main/java/org/apache/ignite/internal/util/typedef/PCE.java
index 03fa8bd..b6dec91 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/typedef/PCE.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/typedef/PCE.java
@@ -21,7 +21,6 @@ import javax.cache.Cache;
 import org.apache.ignite.internal.util.lang.GridFunc;
 import org.apache.ignite.lang.IgnitePredicate;
 
-
 /**
  * Defines {@code alias} for <tt>GridPredicate&lt;Entry&lt;K, V&gt;&gt;</tt> by extending
  * {@link org.apache.ignite.lang.IgnitePredicate}. Since Java doesn't provide type aliases (like Scala, for example) we resort
@@ -30,4 +29,4 @@ import org.apache.ignite.lang.IgnitePredicate;
  * @see org.apache.ignite.lang.IgnitePredicate
  * @see GridFunc
  */
-public interface PCE<K, V> extends IgnitePredicate<Cache.Entry<K, V>> { /* No-op. */ }
\ No newline at end of file
+public interface PCE<K, V> extends IgnitePredicate<Cache.Entry<K, V>> { /* No-op. */ }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorCacheConfiguration.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorCacheConfiguration.java
index 3f22065..de86686 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorCacheConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorCacheConfiguration.java
@@ -37,7 +37,6 @@ import org.apache.ignite.internal.visor.query.VisorQueryEntity;
 import org.apache.ignite.lang.IgniteUuid;
 import org.jetbrains.annotations.Nullable;
 
-
 import static org.apache.ignite.internal.visor.util.VisorTaskUtils.compactClass;
 import static org.apache.ignite.internal.visor.util.VisorTaskUtils.compactIterable;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceClosure.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceClosure.java
index 6990cd7..722686e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceClosure.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceClosure.java
@@ -126,7 +126,6 @@ public class VisorFindAndDeleteGarbageInPersistenceClosure implements IgniteCall
                 }
             }));
 
-
         Map<Integer, Map<Integer, Long>> grpIdToPartIdToGarbageCount = new HashMap<>();
 
         int curPart = 0;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceJobResult.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceJobResult.java
index 1c557cd..f05cdfa 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceJobResult.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorFindAndDeleteGarbageInPersistenceJobResult.java
@@ -38,7 +38,6 @@ public class VisorFindAndDeleteGarbageInPersistenceJobResult extends IgniteDataT
     @GridToStringInclude
     private Map<Integer, Map<Integer, Long>> result;
 
-
     /**
      * @param result Results with founded garbage (GroupId -> (CacheId, Count of keys)).
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorMemoryMetrics.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorMemoryMetrics.java
index fd94421..d9ac08a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorMemoryMetrics.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/cache/VisorMemoryMetrics.java
@@ -192,7 +192,6 @@ public class VisorMemoryMetrics extends VisorDataTransferObject {
         return physicalMemoryPages;
     }
 
-
     /**
      * @return Total size of memory allocated, in bytes.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/igfs/VisorIgfsProfilerTask.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/igfs/VisorIgfsProfilerTask.java
index 935a3da..c029dab 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/igfs/VisorIgfsProfilerTask.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/igfs/VisorIgfsProfilerTask.java
@@ -154,26 +154,37 @@ public class VisorIgfsProfilerTask extends VisorOneNodeTask<VisorIgfsProfilerTas
         // Named column indexes in log file.
         /** */
         private static final int LOG_COL_TIMESTAMP = 0;
+
         /** */
         private static final int LOG_COL_THREAD_ID = 1;
+
         /** */
         private static final int LOG_COL_ENTRY_TYPE = 3;
+
         /** */
         private static final int LOG_COL_PATH = 4;
+
         /** */
         private static final int LOG_COL_IGFS_MODE = 5;
+
         /** */
         private static final int LOG_COL_STREAM_ID = 6;
+
         /** */
         private static final int LOG_COL_DATA_LEN = 8;
+
         /** */
         private static final int LOG_COL_OVERWRITE = 10;
+
         /** */
         private static final int LOG_COL_POS = 13;
+
         /** */
         private static final int LOG_COL_USER_TIME = 17;
+
         /** */
         private static final int LOG_COL_SYSTEM_TIME = 18;
+
         /** */
         private static final int LOG_COL_TOTAL_BYTES = 19;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/misc/VisorWalTask.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/misc/VisorWalTask.java
index bdadf97..51d32d5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/misc/VisorWalTask.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/misc/VisorWalTask.java
@@ -309,7 +309,6 @@ public class VisorWalTask extends VisorMultiNodeTask<VisorWalTaskArg, VisorWalTa
             return dir;
         }
 
-
         /**
          * Sort WAL files according their indices.
          *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorClientConnectorConfiguration.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorClientConnectorConfiguration.java
index 0a1459e..020a9be 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorClientConnectorConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorClientConnectorConfiguration.java
@@ -162,6 +162,7 @@ public class VisorClientConnectorConfiguration extends VisorDataTransferObject {
     public boolean isTcpNoDelay() {
         return tcpNoDelay;
     }
+
     /**
      * @return Thread pool that is in charge of processing SQL requests.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorNodeDataCollectorTaskArg.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorNodeDataCollectorTaskArg.java
index b707991..328527e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorNodeDataCollectorTaskArg.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorNodeDataCollectorTaskArg.java
@@ -83,6 +83,7 @@ public class VisorNodeDataCollectorTaskArg extends VisorDataTransferObject {
         this.collectCacheMetrics = collectCacheMetrics;
         this.cacheGrps = cacheGrps;
     }
+
     /**
      * Create task arguments with given parameters.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorServiceConfiguration.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorServiceConfiguration.java
index 1cd883e..9092cc2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorServiceConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorServiceConfiguration.java
@@ -104,7 +104,6 @@ public class VisorServiceConfiguration extends VisorDataTransferObject {
         return name;
     }
 
-
     /**
      * @return Service instance.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSqlConnectorConfiguration.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSqlConnectorConfiguration.java
index 2c2f959..4099caf 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSqlConnectorConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSqlConnectorConfiguration.java
@@ -131,6 +131,7 @@ public class VisorSqlConnectorConfiguration extends VisorDataTransferObject {
     public boolean isTcpNoDelay() {
         return tcpNoDelay;
     }
+
     /**
      * @return Thread pool that is in charge of processing SQL requests.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/query/VisorQueryScanRegexFilter.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/query/VisorQueryScanRegexFilter.java
index fa4a596..3c200b2 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/query/VisorQueryScanRegexFilter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/query/VisorQueryScanRegexFilter.java
@@ -43,6 +43,7 @@ public class VisorQueryScanRegexFilter implements IgniteBiPredicate<Object, Obje
 
         this.ptrn = Pattern.compile(regex ? ptrn : ".*?" + Pattern.quote(ptrn) + ".*?", flags);
     }
+
     /**
      * Check that key or value contains specified string.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/tx/TxVerboseKey.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/tx/TxVerboseKey.java
index c23e572..3f1d429 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/tx/TxVerboseKey.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/tx/TxVerboseKey.java
@@ -77,7 +77,6 @@ public class TxVerboseKey extends IgniteDataTransferObject {
         return lockType;
     }
 
-
     /**
      * @return Owner version.
      */
@@ -85,7 +84,6 @@ public class TxVerboseKey extends IgniteDataTransferObject {
         return ownerVer;
     }
 
-
     /**
      * @return Read.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/util/VisorTaskUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/util/VisorTaskUtils.java
index 7ab1ffc..f2b4732 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/util/VisorTaskUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/util/VisorTaskUtils.java
@@ -125,7 +125,6 @@ public class VisorTaskUtils {
     /** */
     public static final int REBALANCE_COMPLETE = 1;
 
-
     /** */
     private static final int DFLT_BUFFER_SIZE = 4096;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/visor/verify/VisorValidateIndexesTaskArg.java b/modules/core/src/main/java/org/apache/ignite/internal/visor/verify/VisorValidateIndexesTaskArg.java
index 6dbd961..44cbccf 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/visor/verify/VisorValidateIndexesTaskArg.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/visor/verify/VisorValidateIndexesTaskArg.java
@@ -26,7 +26,6 @@ import org.apache.ignite.internal.util.typedef.internal.S;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.internal.visor.VisorDataTransferObject;
 
-
 /**
  *
  */
@@ -63,7 +62,6 @@ public class VisorValidateIndexesTaskArg extends VisorDataTransferObject {
         this.nodes = nodes;
     }
 
-
     /**
      * @return Caches.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java b/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java
index 4b93261..ce1fcc1 100644
--- a/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java
+++ b/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java
@@ -131,7 +131,6 @@ public final class IgniteUuid implements Comparable<IgniteUuid>, Iterable<Ignite
         );
     }
 
-
     /**
      * Gets a short string version of this ID. Use it only for UI where full version is
      * available to the application.
diff --git a/modules/core/src/main/java/org/apache/ignite/marshaller/MarshallerContext.java b/modules/core/src/main/java/org/apache/ignite/marshaller/MarshallerContext.java
index f2ac393..9c11461 100644
--- a/modules/core/src/main/java/org/apache/ignite/marshaller/MarshallerContext.java
+++ b/modules/core/src/main/java/org/apache/ignite/marshaller/MarshallerContext.java
@@ -90,7 +90,6 @@ public interface MarshallerContext {
      */
     public Class getClass(int typeId, ClassLoader ldr) throws ClassNotFoundException, IgniteCheckedException;
 
-
     /**
      * Gets class name for provided (platformId, typeId) pair.
      *
@@ -121,4 +120,4 @@ public interface MarshallerContext {
      * Returns JDK marshaller instance.
      */
     public JdkMarshaller jdkMarshaller();
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/plugin/PluginValidationException.java b/modules/core/src/main/java/org/apache/ignite/plugin/PluginValidationException.java
index bb71b56..ee3491a 100644
--- a/modules/core/src/main/java/org/apache/ignite/plugin/PluginValidationException.java
+++ b/modules/core/src/main/java/org/apache/ignite/plugin/PluginValidationException.java
@@ -50,7 +50,6 @@ public class PluginValidationException extends IgniteException {
         this.rmtMsg = rmtMsg;
     }
 
-
     /**
      * @return Offending node ID.
      */
@@ -64,4 +63,4 @@ public class PluginValidationException extends IgniteException {
     public String remoteMessage() {
         return rmtMsg;
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/spi/checkpoint/jdbc/JdbcCheckpointSpiMBean.java b/modules/core/src/main/java/org/apache/ignite/spi/checkpoint/jdbc/JdbcCheckpointSpiMBean.java
index 595b80b..5ac7240 100644
--- a/modules/core/src/main/java/org/apache/ignite/spi/checkpoint/jdbc/JdbcCheckpointSpiMBean.java
+++ b/modules/core/src/main/java/org/apache/ignite/spi/checkpoint/jdbc/JdbcCheckpointSpiMBean.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.spi.checkpoint.jdbc;
 
-
 import org.apache.ignite.mxbean.MXBeanDescription;
 import org.apache.ignite.spi.IgniteSpiManagementMBean;
 
@@ -114,4 +113,4 @@ public interface JdbcCheckpointSpiMBean extends IgniteSpiManagementMBean {
      */
     @MXBeanDescription("Expiration date field type for checkpoint table.")
     public String getExpireDateFieldType();
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/DiscoveryDataPacket.java b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/DiscoveryDataPacket.java
index 646565e..1deff62 100644
--- a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/DiscoveryDataPacket.java
+++ b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/DiscoveryDataPacket.java
@@ -41,6 +41,7 @@ import static org.apache.ignite.internal.GridComponent.DiscoveryDataExchangeType
 public class DiscoveryDataPacket implements Serializable {
     /** Local file header signature(read as a little-endian number). */
     private static int ZIP_HEADER_SIGNATURE = 0x04034b50;
+
     /** */
     private static final long serialVersionUID = 0L;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/ssl/SSLServerSocketFactoryWrapper.java b/modules/core/src/main/java/org/apache/ignite/ssl/SSLServerSocketFactoryWrapper.java
index ad80f3c..e4053e6 100644
--- a/modules/core/src/main/java/org/apache/ignite/ssl/SSLServerSocketFactoryWrapper.java
+++ b/modules/core/src/main/java/org/apache/ignite/ssl/SSLServerSocketFactoryWrapper.java
@@ -29,6 +29,7 @@ class SSLServerSocketFactoryWrapper extends SSLServerSocketFactory {
 
     /** */
     private final SSLServerSocketFactory delegate;
+
     /** */
     private final SSLParameters parameters;
 
diff --git a/modules/core/src/main/java/org/apache/ignite/transactions/TransactionMixedModeException.java b/modules/core/src/main/java/org/apache/ignite/transactions/TransactionMixedModeException.java
index 1092535..187aa2b 100644
--- a/modules/core/src/main/java/org/apache/ignite/transactions/TransactionMixedModeException.java
+++ b/modules/core/src/main/java/org/apache/ignite/transactions/TransactionMixedModeException.java
@@ -23,6 +23,7 @@ package org.apache.ignite.transactions;
 public class TransactionMixedModeException extends TransactionException {
     /** */
     private static final long serialVersionUID = 0L;
+
     /**
      * Creates new exception with given error message.
      *
diff --git a/modules/core/src/main/java/org/apache/ignite/transactions/TransactionUnsupportedConcurrencyException.java b/modules/core/src/main/java/org/apache/ignite/transactions/TransactionUnsupportedConcurrencyException.java
index d93beb5..c8ce9bc 100644
--- a/modules/core/src/main/java/org/apache/ignite/transactions/TransactionUnsupportedConcurrencyException.java
+++ b/modules/core/src/main/java/org/apache/ignite/transactions/TransactionUnsupportedConcurrencyException.java
@@ -23,6 +23,7 @@ package org.apache.ignite.transactions;
 public class TransactionUnsupportedConcurrencyException extends TransactionException {
     /** */
     private static final long serialVersionUID = 0L;
+
     /**
      * Creates new exception with given error message.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/cache/ResetLostPartitionTest.java b/modules/core/src/test/java/org/apache/ignite/cache/ResetLostPartitionTest.java
index 3e1568a..ef74ba5 100644
--- a/modules/core/src/test/java/org/apache/ignite/cache/ResetLostPartitionTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/cache/ResetLostPartitionTest.java
@@ -47,6 +47,7 @@ import static org.apache.ignite.internal.processors.cache.persistence.file.FileP
 public class ResetLostPartitionTest extends GridCommonAbstractTest {
     /** Cache name. */
     private static final String[] CACHE_NAMES = {"cacheOne", "cacheTwo", "cacheThree"};
+
     /** Cache size */
     public static final int CACHE_SIZE = 100000 / CACHE_NAMES.length;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/Person.java b/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/Person.java
index 07270b1..4f2b7ea 100644
--- a/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/Person.java
+++ b/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/Person.java
@@ -143,7 +143,6 @@ public class Person implements Serializable {
         this.name = name;
     }
 
-
     /**
      * Gets salary.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/PersonComplexKey.java b/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/PersonComplexKey.java
index 554831c..e92c694 100644
--- a/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/PersonComplexKey.java
+++ b/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/model/PersonComplexKey.java
@@ -35,7 +35,6 @@ public class PersonComplexKey implements Serializable {
     /** Value for city id. */
     private int cityId;
 
-
     /**
      * Empty constructor.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/GridCollisionJobsContextSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/GridCollisionJobsContextSelfTest.java
index 552fedf..92831db 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/GridCollisionJobsContextSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/GridCollisionJobsContextSelfTest.java
@@ -86,7 +86,6 @@ public class GridCollisionJobsContextSelfTest extends GridCommonAbstractTest {
             assert waitJobs != null;
             assert activeJobs != null;
 
-
             for (CollisionJobContext job : waitJobs) {
                 assert job.getJob() != null;
                 assert job.getJobContext() != null;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/GridFailoverCustomTopologySelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/GridFailoverCustomTopologySelfTest.java
index 733f47f..0ed6855 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/GridFailoverCustomTopologySelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/GridFailoverCustomTopologySelfTest.java
@@ -76,6 +76,7 @@ public class GridFailoverCustomTopologySelfTest extends GridCommonAbstractTest {
 
         return cfg;
     }
+
     /**
      * Tests that failover don't pick local node if it has been excluded from topology.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/GridLifecycleBeanSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/GridLifecycleBeanSelfTest.java
index 091f88b..0018f7f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/GridLifecycleBeanSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/GridLifecycleBeanSelfTest.java
@@ -116,7 +116,6 @@ public class GridLifecycleBeanSelfTest extends GridCommonAbstractTest {
             stopAllGrids();
         }
 
-
         assertEquals(IgniteState.STOPPED, G.state(getTestIgniteInstanceName()));
 
         assertEquals(1, bean.count(BEFORE_NODE_START));
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/IgniteConnectionConcurrentReserveAndRemoveTest.java b/modules/core/src/test/java/org/apache/ignite/internal/IgniteConnectionConcurrentReserveAndRemoveTest.java
index 797cdd5..9d74ae8 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/IgniteConnectionConcurrentReserveAndRemoveTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/IgniteConnectionConcurrentReserveAndRemoveTest.java
@@ -67,7 +67,6 @@ public class IgniteConnectionConcurrentReserveAndRemoveTest extends GridCommonAb
         }
     }
 
-
     @Test
     public void test() throws Exception {
         IgniteEx svr = startGrid(0);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/IgniteExplicitImplicitDeploymentSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/IgniteExplicitImplicitDeploymentSelfTest.java
index 4c07a78..f08a821 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/IgniteExplicitImplicitDeploymentSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/IgniteExplicitImplicitDeploymentSelfTest.java
@@ -301,7 +301,6 @@ public class IgniteExplicitImplicitDeploymentSelfTest extends GridCommonAbstract
                assert res == 2 : "Invalid response: " + res;
            }
 
-
            if (byTask) {
                ignite1.compute().localDeployTask(taskCls, ldr1);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/IgniteReflectionFactorySelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/IgniteReflectionFactorySelfTest.java
index 43c56d1..12e1efe 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/IgniteReflectionFactorySelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/IgniteReflectionFactorySelfTest.java
@@ -74,18 +74,25 @@ public class IgniteReflectionFactorySelfTest {
     public static class TestClass {
         /** */
         private byte byteField;
+
         /** */
         private short shortField;
+
         /** */
         private int iField;
+
         /** */
         private long longField;
+
         /** */
         private float floatField;
+
         /** */
         private double doubleField;
+
         /** */
         private char cField;
+
         /** */
         private boolean booleanField;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/SensitiveInfoTestLoggerProxy.java b/modules/core/src/test/java/org/apache/ignite/internal/SensitiveInfoTestLoggerProxy.java
index 48b0dd6..09bc8c5 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/SensitiveInfoTestLoggerProxy.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/SensitiveInfoTestLoggerProxy.java
@@ -114,16 +114,20 @@ public class SensitiveInfoTestLoggerProxy implements IgniteLogger, LifecycleAwar
     /** */
     @GridToStringInclude
     private IgniteLogger impl;
+
     /** */
     private String gridName;
+
     /** */
     private String id8;
+
     /** */
     @GridToStringInclude
     private Object ctgr;
 
     /** Whether testing sensitive is enabled for the logger */
     private boolean testSensitive;
+
     /**
      * No-arg constructor is required by externalization.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/TransactionMetricsMxBeanImplTest.java b/modules/core/src/test/java/org/apache/ignite/internal/TransactionMetricsMxBeanImplTest.java
index ecb5bb1..6126e6f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/TransactionMetricsMxBeanImplTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/TransactionMetricsMxBeanImplTest.java
@@ -229,12 +229,16 @@ public class TransactionMetricsMxBeanImplTest extends GridCommonAbstractTest {
     private static class TxThread implements Runnable {
         /** */
         private CountDownLatch commitAllowLatch;
+
         /** */
         private CountDownLatch transactionStartLatch;
+
         /** */
         private Ignite ignite;
+
         /** */
         private int key1;
+
         /** */
         private int key2;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/VisorManagementEventSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/VisorManagementEventSelfTest.java
index cd81962..b598486 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/VisorManagementEventSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/VisorManagementEventSelfTest.java
@@ -35,7 +35,7 @@ import org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder;
 import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
 import org.junit.Test;
 
-import static org.apache.ignite.events.EventType.EVT_MANAGEMENT_TASK_STARTED;;
+import static org.apache.ignite.events.EventType.EVT_MANAGEMENT_TASK_STARTED;
 
 /**
  *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldsAbstractSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldsAbstractSelfTest.java
index 59e71cd..2fd7519 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldsAbstractSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldsAbstractSelfTest.java
@@ -598,34 +598,56 @@ public abstract class BinaryFieldsAbstractSelfTest extends GridCommonAbstractTes
     public static class TestObject {
         /** Primitive fields. */
         public byte fByte;
+
         public boolean fBool;
+
         public short fShort;
+
         public char fChar;
+
         public int fInt;
+
         public long fLong;
+
         public float fFloat;
+
         public double fDouble;
 
         public byte[] fByteArr;
+
         public boolean[] fBoolArr;
+
         public short[] fShortArr;
+
         public char[] fCharArr;
+
         public int[] fIntArr;
+
         public long[] fLongArr;
+
         public float[] fFloatArr;
+
         public double[] fDoubleArr;
 
         /** Special fields. */
         public String fString;
+
         public Date fDate;
+
         public Timestamp fTimestamp;
+
         public UUID fUuid;
+
         public BigDecimal fDecimal;
 
         public String[] fStringArr;
+
         public Date[] fDateArr;
+
         public Timestamp[] fTimestampArr;
+
         public UUID[] fUuidArr;
+
         public BigDecimal[] fDecimalArr;
 
         /** Nested object. */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryMarshallerSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryMarshallerSelfTest.java
index e4655dd..efe1964 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryMarshallerSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryMarshallerSelfTest.java
@@ -3423,7 +3423,6 @@ public class BinaryMarshallerSelfTest extends GridCommonAbstractTest {
 
         BinaryObject binObj = builder.build();
 
-
         Collection<String> fieldsBin =  binObj.type().fieldNames();
 
         assertEquals(fieldNames.length, fieldsBin.size());
@@ -4864,12 +4863,14 @@ public class BinaryMarshallerSelfTest extends GridCommonAbstractTest {
      */
     private static class CustomCollections {
         public List list = new ArrayList();
+
         public List customList = new CustomArrayList();
     }
 
     @SuppressWarnings("unchecked")
     private static class CustomCollectionsWithFactory implements Binarylizable {
         public List list = new CustomArrayList();
+
         public Map map = new CustomHashMap();
 
         /** {@inheritDoc} */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java b/modules/core/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java
index 566df03..5371516 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java
@@ -229,7 +229,6 @@ public class CommandHandlerParsingTest {
         return res;
     }
 
-
     private <T> void generateAllCombinations(List<T> res, List<T> source, Predicate<T> stopFunc, List<List<T>> acc) {
         acc.add(res);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerEnumSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerEnumSelfTest.java
index 5dfebc4..642421b 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerEnumSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerEnumSelfTest.java
@@ -36,6 +36,7 @@ public class OptimizedMarshallerEnumSelfTest {
     private String igniteHome = System.getProperty("user.dir");
 
     private final IgniteLogger rootLog = new GridTestLog4jLogger(false);
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerTest.java b/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerTest.java
index e07fa2c..736ba71 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/marshaller/optimized/OptimizedMarshallerTest.java
@@ -686,6 +686,7 @@ public class OptimizedMarshallerTest extends GridCommonAbstractTest {
             return null;
         }
     }
+
     /**
      * Some serializable class.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2Test.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2Test.java
index 6ef81dd..f71a06b 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2Test.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/affinity/GridAffinityAssignmentV2Test.java
@@ -54,10 +54,15 @@ public class GridAffinityAssignmentV2Test {
     protected IgniteProductVersion ver = new IgniteProductVersion();
 
     private ClusterNode clusterNode1 = node(metrics, ver, "1");
+
     private ClusterNode clusterNode2 = node(metrics, ver, "2");
+
     private ClusterNode clusterNode3 = node(metrics, ver, "3");
+
     private ClusterNode clusterNode4 = node(metrics, ver, "4");
+
     private ClusterNode clusterNode5 = node(metrics, ver, "5");
+
     private ClusterNode clusterNode6 = node(metrics, ver, "6");
 
     private List<ClusterNode> clusterNodes = new ArrayList<ClusterNode>() {{
@@ -244,7 +249,6 @@ public class GridAffinityAssignmentV2Test {
         assertEquals(deserialized.topologyVersion(), gridAffinityAssignment2.topologyVersion());
     }
 
-
     /**
      *
      * @param metrics Metrics.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/authentication/AuthenticationProcessorSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/authentication/AuthenticationProcessorSelfTest.java
index 5e9d038..3e7557a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/authentication/AuthenticationProcessorSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/authentication/AuthenticationProcessorSelfTest.java
@@ -614,6 +614,7 @@ public class AuthenticationProcessorSelfTest extends GridCommonAbstractTest {
             }
         }, UserManagementException.class, "Invalid user name");
     }
+
     /**
      * @param createNode Node to execute create operation.
      * @param authNode Node to execute authentication.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheGroupLocalConfigurationSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheGroupLocalConfigurationSelfTest.java
index ebf85c2..bc176ff 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheGroupLocalConfigurationSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheGroupLocalConfigurationSelfTest.java
@@ -70,7 +70,6 @@ public class CacheGroupLocalConfigurationSelfTest extends GridCommonAbstractTest
             cfg.setCacheConfiguration(ccfg);
         }
 
-
         return cfg;
     }
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheNearReaderUpdateTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheNearReaderUpdateTest.java
index 6c764aa1..0815ae1 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheNearReaderUpdateTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheNearReaderUpdateTest.java
@@ -85,6 +85,7 @@ public class CacheNearReaderUpdateTest extends GridCommonAbstractTest {
 
         return cfg;
     }
+
     /** */
     @Before
     public void beforeCacheNearReaderUpdateTest() {
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheRebalancingSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheRebalancingSelfTest.java
index ca52ac6..f5f4d3f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheRebalancingSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/CacheRebalancingSelfTest.java
@@ -156,7 +156,6 @@ public class CacheRebalancingSelfTest extends GridCommonAbstractTest {
         testLocalCacheSize(ig0, totalKeysCnt, null);
         testLocalCacheSize(ig1, before_ig1, null);
 
-
         ig1.rebalanceEnabled(true);
 
         testLocalCacheSize(ig0, totalKeysCnt, null);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheAbstractFullApiSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheAbstractFullApiSelfTest.java
index 8de3127..2900edd 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheAbstractFullApiSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheAbstractFullApiSelfTest.java
@@ -2481,7 +2481,6 @@ public abstract class GridCacheAbstractFullApiSelfTest extends GridCacheAbstract
 
         IgniteCache<String, Integer> cache = jcache();
 
-
         try {
             IgniteFuture<Integer> fut1 = cache.getAndPutIfAbsentAsync("key", 1);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheConcurrentTxMultiNodeLoadTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheConcurrentTxMultiNodeLoadTest.java
index 024331c..f570e19 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheConcurrentTxMultiNodeLoadTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheConcurrentTxMultiNodeLoadTest.java
@@ -301,7 +301,6 @@ public class GridCacheConcurrentTxMultiNodeLoadTest extends GridCommonAbstractTe
         /** */
         private static GridAtomicLong submitTime = new GridAtomicLong();
 
-
         /** */
         private Ignite g;
 
@@ -360,7 +359,6 @@ public class GridCacheConcurrentTxMultiNodeLoadTest extends GridCommonAbstractTe
         }
     }
 
-
     /**
      *
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheInterceptorAbstractSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheInterceptorAbstractSelfTest.java
index b07048c..8cfbab3 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheInterceptorAbstractSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheInterceptorAbstractSelfTest.java
@@ -254,7 +254,6 @@ public abstract class GridCacheInterceptorAbstractSelfTest extends GridCacheAbst
 
         log.info("GetAsync 1.");
 
-
         if (needVer)
             assertEquals((Integer)101, cache.getEntryAsync(key).get().getValue());
         else
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheMarshallerTxAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheMarshallerTxAbstractTest.java
index e5da7d6..cacf22a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheMarshallerTxAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheMarshallerTxAbstractTest.java
@@ -51,6 +51,7 @@ public abstract class GridCacheMarshallerTxAbstractTest extends GridCommonAbstra
      */
     private static class GridCacheWrongValue1 {
         private int val1 = 8;
+
         private long val2 = 9;
     }
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePreloadingEvictionsSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePreloadingEvictionsSelfTest.java
index a8aac75..5d77172 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePreloadingEvictionsSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePreloadingEvictionsSelfTest.java
@@ -56,6 +56,7 @@ import static org.apache.ignite.events.EventType.EVT_NODE_JOINED;
 public class GridCachePreloadingEvictionsSelfTest extends GridCommonAbstractTest {
     /** */
     private static final String VALUE = createValue();
+
     public static final CachePeekMode[] ALL_PEEK_MODES = new CachePeekMode[] {CachePeekMode.ALL};
 
     /** */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePutAllFailoverSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePutAllFailoverSelfTest.java
index 4935e4b..d90509f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePutAllFailoverSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCachePutAllFailoverSelfTest.java
@@ -695,7 +695,6 @@ public class GridCachePutAllFailoverSelfTest extends GridCommonAbstractTest {
 
             cacheCfg.setWriteSynchronizationMode(FULL_SYNC);
 
-
             cfg.setCacheConfiguration(cacheCfg);
         }
         else
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerNotificationTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerNotificationTest.java
index 1f4bf0f..b99ef4a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerNotificationTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerNotificationTest.java
@@ -142,7 +142,6 @@ public class GridCacheTtlManagerNotificationTest extends GridCommonAbstractTest
                 }
             }, EventType.EVT_CACHE_OBJECT_EXPIRED);
 
-
             int smallDuration = 2000;
 
             int threadCnt = 10;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridLocalIgniteSerializationTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridLocalIgniteSerializationTest.java
index e87df6d..9f122e6 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridLocalIgniteSerializationTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridLocalIgniteSerializationTest.java
@@ -98,7 +98,6 @@ public class GridLocalIgniteSerializationTest extends GridCommonAbstractTest {
      */
     private void checkPutGet(final TestObject obj, final String igniteInstanceName) throws Exception {
 
-
         // Run async to emulate user thread.
         GridTestUtils.runAsync(new Callable<Object>() {
             @Override public Object call() throws Exception {
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/H2CacheStoreStrategy.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/H2CacheStoreStrategy.java
index 72b049b..627eccf 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/H2CacheStoreStrategy.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/H2CacheStoreStrategy.java
@@ -73,7 +73,6 @@ public class H2CacheStoreStrategy implements TestCacheStoreStrategy {
         "delete from WRITES;\n" +
         "delete from REMOVES;";
 
-
     /**
      * @throws IgniteCheckedException If failed.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteAbstractDynamicCacheStartFailTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteAbstractDynamicCacheStartFailTest.java
index 3ec7754..f199fa7 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteAbstractDynamicCacheStartFailTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteAbstractDynamicCacheStartFailTest.java
@@ -80,7 +80,7 @@ public abstract class IgniteAbstractDynamicCacheStartFailTest extends GridCacheA
     private static final String CLIENT_GRID_NAME = "client";
 
     /** */
-    protected static final String EXISTING_CACHE_NAME = "existing-cache";;
+    protected static final String EXISTING_CACHE_NAME = "existing-cache";
 
     /** */
     private static final int PARTITION_COUNT = 16;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigVariationsFullApiTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigVariationsFullApiTest.java
index e75c9ff..c0eba3a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigVariationsFullApiTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigVariationsFullApiTest.java
@@ -1718,7 +1718,6 @@ public class IgniteCacheConfigVariationsFullApiTest extends IgniteCacheConfigVar
 
                 IgniteFuture<?> fut1 = cache.invokeAsync(key2, INCR_PROCESSOR, dataMode);
 
-
                 IgniteFuture<?> fut2 = cache.invokeAsync(key3, RMV_PROCESSOR);
 
                 fut0.get();
@@ -6065,7 +6064,6 @@ public class IgniteCacheConfigVariationsFullApiTest extends IgniteCacheConfigVar
                 else
                     val0 = cache.get(keys.get(0));
 
-
                 assertEquals(0, val0.intValue());
 
                 Map<String, Integer> allOutTx;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheEntryListenerEagerTtlDisabledTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheEntryListenerEagerTtlDisabledTest.java
index 6f394e2..2724e74 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheEntryListenerEagerTtlDisabledTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheEntryListenerEagerTtlDisabledTest.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.cache;
 
-
 import org.apache.ignite.configuration.CacheConfiguration;
 import org.apache.ignite.testframework.MvccFeatureChecker;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsTest.java
index 0c49633..0ab22fd 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsTest.java
@@ -867,7 +867,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
             GridTestUtils.runMultiThreaded(cls, "loaders");
         }
 
-
         int p = ThreadLocalRandom.current().nextInt(32);
 
         ScanQuery<Integer, Integer> qry = new ScanQuery().setPartition(p);
@@ -966,7 +965,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
             GridTestUtils.runMultiThreaded(cls, "loaders");
         }
 
-
         Set<Integer> keysSet = sequence(keys);
 
         for (Cache.Entry<Integer, Integer> entry : ignite(loc ? 0 : 3).<Integer, Integer>cache(CACHE1)) {
@@ -1008,7 +1006,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
         else
             startGridsMultiThreaded(4);
 
-
         Ignite srv0 = ignite(0);
 
         srv0.createCache(
@@ -1570,7 +1567,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
             assertEquals(ITEMS * 2, cache6.size(CachePeekMode.ALL));
             assertEquals(ITEMS, cache6.localSize(CachePeekMode.ALL));
 
-
             for (int k = 0; k < ITEMS; k++) {
                 assertEquals(i, cache1.localPeek(new Key1(i)));
                 assertNull(cache2.localPeek(new Key1(i)));
@@ -2581,7 +2577,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
         Integer key = rnd.nextInt();
         Integer val = rnd.nextInt();
 
-
         cache.put(key, val);
 
         Object val0 = cache.getAndRemove(key);
@@ -2604,7 +2599,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
         Integer key = rnd.nextInt();
         Integer val = rnd.nextInt();
 
-
         cache.put(key, val);
 
         Object val0 = cache.getAndRemoveAsync(key).get(ASYNC_TIMEOUT);
@@ -2628,7 +2622,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
         Integer val1 = rnd.nextInt();
         Integer val2 = rnd.nextInt();
 
-
         assertTrue(cache.putIfAbsent(key, val1));
 
         Object val0 = cache.get(key);
@@ -2654,7 +2647,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
         Integer val1 = rnd.nextInt();
         Integer val2 = rnd.nextInt();
 
-
         assertTrue((Boolean)cache.putIfAbsentAsync(key, val1).get(ASYNC_TIMEOUT));
 
         Object val0 = cache.get(key);
@@ -2959,7 +2951,6 @@ public class IgniteCacheGroupsTest extends GridCommonAbstractTest {
         Factory<? extends CacheStore<Integer, Integer>> fctr2 =
             FactoryBuilder.factoryOf(new MapBasedStore<>(data2));
 
-
         CacheConfiguration ccfg1 = cacheConfiguration(GROUP1, CACHE1, cacheMode, atomicityMode, 1, false)
             .setCacheStoreFactory(fctr1);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCachePeekModesAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCachePeekModesAbstractTest.java
index efbbe16..0b10db2 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCachePeekModesAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCachePeekModesAbstractTest.java
@@ -1187,7 +1187,6 @@ public abstract class IgniteCachePeekModesAbstractTest extends IgniteCacheAbstra
                 cache0.put(backupKeys.get(i), val);
             }
 
-
             int totalKeys = 200;
 
             T2<Integer, Integer> offheapKeys = offheapKeysCount(nodeIdx, part);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheTxCopyOnReadDisabledTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheTxCopyOnReadDisabledTest.java
index c8204a4..d586bcd 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheTxCopyOnReadDisabledTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheTxCopyOnReadDisabledTest.java
@@ -32,6 +32,7 @@ public class IgniteCacheTxCopyOnReadDisabledTest extends IgniteCacheCopyOnReadDi
     public void beforeIgniteCacheTxCopyOnReadDisabledTest() {
         MvccFeatureChecker.skipIfNotSupported(MvccFeatureChecker.Feature.CACHE_STORE);
     }
+
     /** {@inheritDoc} */
     @Override protected CacheAtomicityMode atomicityMode() {
         return TRANSACTIONAL;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClientCacheStartFailoverTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClientCacheStartFailoverTest.java
index 26e934d..22b6ad3 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClientCacheStartFailoverTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClientCacheStartFailoverTest.java
@@ -185,7 +185,6 @@ public class IgniteClientCacheStartFailoverTest extends GridCommonAbstractTest {
         clientStartLastServerFails(TRANSACTIONAL_SNAPSHOT);
     }
 
-
     /**
      * @param atomicityMode Cache atomicity mode.
      * @throws Exception If failed.
@@ -584,7 +583,6 @@ public class IgniteClientCacheStartFailoverTest extends GridCommonAbstractTest {
             cache.putAll(map);
         }
 
-
         return cacheNames;
     }
 
@@ -603,6 +601,7 @@ public class IgniteClientCacheStartFailoverTest extends GridCommonAbstractTest {
 
         return ccfg;
     }
+
     /**
      *
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClusterActivateDeactivateTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClusterActivateDeactivateTest.java
index 965110a..2c4d7a7 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClusterActivateDeactivateTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteClusterActivateDeactivateTest.java
@@ -68,6 +68,7 @@ public class IgniteClusterActivateDeactivateTest extends GridCommonAbstractTest
 
     /** Non-persistent data region name. */
     private static final String NO_PERSISTENCE_REGION = "no-persistence-region";
+
     /** */
     private static final int DEFAULT_CACHES_COUNT = 2;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteOutOfMemoryPropagationTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteOutOfMemoryPropagationTest.java
index 2816cb8..225a668 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteOutOfMemoryPropagationTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteOutOfMemoryPropagationTest.java
@@ -176,8 +176,6 @@ public class IgniteOutOfMemoryPropagationTest extends GridCommonAbstractTest {
         stopGrid(0);
     }
 
-
-
     /**
      * @param useStreamer Use streamer.
      * @param concurrency Concurrency.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorAbstractTxCacheTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorAbstractTxCacheTest.java
index d82bcd6..e53b5a2 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorAbstractTxCacheTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorAbstractTxCacheTest.java
@@ -108,7 +108,6 @@ public abstract class IgniteTopologyValidatorAbstractTxCacheTest extends IgniteT
             }
         }
 
-
         try (Transaction tx = grid(0).transactions().txStart(PESSIMISTIC, REPEATABLE_READ)) {
             putInvalid(CACHE_NAME_1);
         }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTxMultiNodeAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTxMultiNodeAbstractTest.java
index 2531c45..037e655 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTxMultiNodeAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTxMultiNodeAbstractTest.java
@@ -51,7 +51,6 @@ import org.junit.Test;
 import static org.apache.ignite.transactions.TransactionConcurrency.PESSIMISTIC;
 import static org.apache.ignite.transactions.TransactionIsolation.REPEATABLE_READ;
 
-
 /**
  * Checks basic multi-node transactional operations.
  */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/WithKeepBinaryCacheFullApiTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/WithKeepBinaryCacheFullApiTest.java
index b4b8b75..9e3606e 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/WithKeepBinaryCacheFullApiTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/WithKeepBinaryCacheFullApiTest.java
@@ -207,7 +207,6 @@ public class WithKeepBinaryCacheFullApiTest extends IgniteCacheConfigVariationsA
                     }
                 });
 
-
                 for (final Object key : keys) {
                     runInAllTxModes(new TestRunnable() {
                         @Override public void run() throws Exception {
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataUpdatesFlowTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataUpdatesFlowTest.java
index f11ce5a..25942e2 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataUpdatesFlowTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/BinaryMetadataUpdatesFlowTest.java
@@ -238,7 +238,6 @@ public class BinaryMetadataUpdatesFlowTest extends GridCommonAbstractTest {
         validateCache(regClient);
     }
 
-
     /**
      * Validates that all updates are readable on the specified node.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryObjectsAbstractSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryObjectsAbstractSelfTest.java
index d097b2e..7a09072 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryObjectsAbstractSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryObjectsAbstractSelfTest.java
@@ -595,7 +595,6 @@ public abstract class GridCacheBinaryObjectsAbstractSelfTest extends GridCommonA
             cache.put(0, arr);
         }
 
-
         for (int i = 0; i < ENTRY_CNT; i++) {
             TestObject[] obj = cache.get(i);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
index 5c4427b..5c4d5d6 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
@@ -589,7 +589,6 @@ public abstract class GridCacheSequenceApiSelfAbstractTest extends IgniteAtomics
 
             resSet.add(val);
 
-
             if (i % 100 == 0)
                 info("Finished iteration 2: " + i);
         }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheAsyncOperationsTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheAsyncOperationsTest.java
index ed9b7e3..6f7ade3 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheAsyncOperationsTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheAsyncOperationsTest.java
@@ -146,6 +146,7 @@ public class CacheAsyncOperationsTest extends GridCommonAbstractTest {
         assertNull(cache.get(0));
         assertEquals((Integer)3, cache.get(1));
     }
+
     /**
      *
      * @param cache Cache.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheDiscoveryDataConcurrentJoinTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheDiscoveryDataConcurrentJoinTest.java
index 44723cc..f060d46 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheDiscoveryDataConcurrentJoinTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheDiscoveryDataConcurrentJoinTest.java
@@ -202,6 +202,7 @@ public class CacheDiscoveryDataConcurrentJoinTest extends GridCommonAbstractTest
 
         return ccfg;
     }
+
     /**
      * @param node Node.
      * @param cacheName Cache name.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheParallelStartTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheParallelStartTest.java
index d01d822..a542aad 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheParallelStartTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheParallelStartTest.java
@@ -43,7 +43,6 @@ public class CacheParallelStartTest extends GridCommonAbstractTest {
     /** */
     private static final int GROUPS_COUNT = 50;
 
-
     /** */
     private static final String STATIC_CACHE_PREFIX = "static-cache-";
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheResultIsNotNullOnPartitionLossTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheResultIsNotNullOnPartitionLossTest.java
index 0e35447..f43f49c 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheResultIsNotNullOnPartitionLossTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheResultIsNotNullOnPartitionLossTest.java
@@ -140,6 +140,7 @@ public class CacheResultIsNotNullOnPartitionLossTest extends GridCommonAbstractT
     public void testCacheResultIsNotNullOnServer() throws Exception {
         testCacheResultIsNotNull0(grid(SERVERS - 2));
     }
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheStartOnJoinTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheStartOnJoinTest.java
index c37e6fa..433c859 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheStartOnJoinTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheStartOnJoinTest.java
@@ -259,6 +259,7 @@ public class CacheStartOnJoinTest extends GridCommonAbstractTest {
 
         return ccfg;
     }
+
     /**
      * @param node Node.
      * @param cacheName Cache name.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheAbstractDistributedByteArrayValuesSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheAbstractDistributedByteArrayValuesSelfTest.java
index 3b961f2..b33cf61 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheAbstractDistributedByteArrayValuesSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheAbstractDistributedByteArrayValuesSelfTest.java
@@ -59,7 +59,6 @@ public abstract class GridCacheAbstractDistributedByteArrayValuesSelfTest extend
             .setAtomicityMode(CacheAtomicityMode.TRANSACTIONAL_SNAPSHOT)
             .setNearConfiguration(null); // TODO IGNITE-7187: remove near cache disabling.
 
-
         CacheConfiguration ccfg = cacheConfiguration(CACHE);
 
         c.setCacheConfiguration(ccfg, mvccCfg);
@@ -184,7 +183,6 @@ public abstract class GridCacheAbstractDistributedByteArrayValuesSelfTest extend
         testTransactionMixed0(mvccCaches, PESSIMISTIC, KEY_1, wrap(1), KEY_2, 1);
     }
 
-
     /**
      * Test transaction behavior.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheBasicOpAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheBasicOpAbstractTest.java
index 08d978b..1840873 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheBasicOpAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheBasicOpAbstractTest.java
@@ -194,7 +194,6 @@ public abstract class GridCacheBasicOpAbstractTest extends GridCommonAbstractTes
 
             IgniteFuture<String> f3 = cache3.getAsync("async1");
 
-
             String v2 = f2.get();
             String v3 = f3.get();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java
index 9cdb2bc..93558a4 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java
@@ -896,7 +896,6 @@ public abstract class GridCacheEventAbstractTest extends GridCacheAbstractSelfTe
 
             this.cnt = cnt;
 
-
             // For partitioned caches we allow extra event for reads.
             if (expCnt < cnt && (!partitioned || evtType != EVT_CACHE_OBJECT_READ || expCnt + 1 < cnt))
                 onDone(new IgniteCheckedException("Wrong event count [evtName=" + U.gridEventName(evtType) + ", evtType=" +
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheModuloAffinityFunction.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheModuloAffinityFunction.java
index 869d395..80fd81d 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheModuloAffinityFunction.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheModuloAffinityFunction.java
@@ -159,7 +159,6 @@ public class GridCacheModuloAffinityFunction implements AffinityFunction {
             if (n == null)
                 n = (it = sorted.iterator()).next();
 
-
             ret.add(n);
         }
 
@@ -203,4 +202,4 @@ public class GridCacheModuloAffinityFunction implements AffinityFunction {
     @Override public String toString() {
         return S.toString(GridCacheModuloAffinityFunction.class, this);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCachePreloadLifecycleAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCachePreloadLifecycleAbstractTest.java
index b3edc0c..244fe0a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCachePreloadLifecycleAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCachePreloadLifecycleAbstractTest.java
@@ -95,6 +95,7 @@ public abstract class GridCachePreloadLifecycleAbstractTest extends GridCommonAb
 
         stopAllGrids();
     }
+
     /** {@inheritDoc} */
     @Override protected long getTestTimeout() {
         return 4 * 60 * 1000; // 4 min.
@@ -213,4 +214,4 @@ public abstract class GridCachePreloadLifecycleAbstractTest extends GridCommonAb
             return S.toString(MyValue.class, this, "clsLdr", getClass().getClassLoader());
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteCacheThreadLocalTxTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteCacheThreadLocalTxTest.java
index 1e96920..84d63b3 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteCacheThreadLocalTxTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteCacheThreadLocalTxTest.java
@@ -160,7 +160,6 @@ public class IgniteCacheThreadLocalTxTest extends GridCommonAbstractTest {
         if (write)
             cache.put(ThreadLocalRandom.current().nextInt(100_000), 1);
 
-
         try {
             txs.txStart(concurrency, isolation);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteRejectConnectOnNodeStopTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteRejectConnectOnNodeStopTest.java
index fbce17a..0db6c7a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteRejectConnectOnNodeStopTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/IgniteRejectConnectOnNodeStopTest.java
@@ -158,7 +158,6 @@ public class IgniteRejectConnectOnNodeStopTest extends GridCommonAbstractTest {
         assertTrue("Failed to get excpected error", err);
     }
 
-
     /**
      *
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/TestCacheNodeExcludingFilter.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/TestCacheNodeExcludingFilter.java
index a3f7d27..46561ce 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/TestCacheNodeExcludingFilter.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/TestCacheNodeExcludingFilter.java
@@ -37,6 +37,7 @@ public class TestCacheNodeExcludingFilter implements IgnitePredicate<ClusterNode
     public TestCacheNodeExcludingFilter(Collection<String> excludeNodes) {
         this.excludeNodes = excludeNodes;
     }
+
     /**
      * @param excludeNodes Nodes names.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheGetReadFromBackupFailoverTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheGetReadFromBackupFailoverTest.java
index 5917e48..48fbe0a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheGetReadFromBackupFailoverTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/CacheGetReadFromBackupFailoverTest.java
@@ -58,12 +58,16 @@ import static org.apache.ignite.cache.CacheWriteSynchronizationMode.FULL_SYNC;
 public class CacheGetReadFromBackupFailoverTest extends GridCommonAbstractTest {
     /** Tx cache name. */
     private static final String TX_CACHE = "txCache";
+
     /** Atomic cache name. */
     private static final String ATOMIC_CACHE = "atomicCache";
+
     /** Keys count. */
     private static final int KEYS_CNT = 50000;
+
     /** Stop load flag. */
     private static final AtomicBoolean stop = new AtomicBoolean();
+
     /** Error. */
     private static final AtomicReference<Throwable> err = new AtomicReference<>();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridCachePartitionsStateValidatorSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridCachePartitionsStateValidatorSelfTest.java
index 3ad2bb3..7c6a512 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridCachePartitionsStateValidatorSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridCachePartitionsStateValidatorSelfTest.java
@@ -43,8 +43,10 @@ import org.mockito.Mockito;
 public class GridCachePartitionsStateValidatorSelfTest extends GridCommonAbstractTest {
     /** Mocks and stubs. */
     private final UUID localNodeId = UUID.randomUUID();
+
     /** */
     private GridCacheSharedContext cctxMock;
+
     /** */
     private GridDhtPartitionTopology topologyMock;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/NotMappedPartitionInTxTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/NotMappedPartitionInTxTest.java
index 05dcacd..b2bc828 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/NotMappedPartitionInTxTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/NotMappedPartitionInTxTest.java
@@ -187,7 +187,6 @@ public class NotMappedPartitionInTxTest extends GridCommonAbstractTest {
             msg = concurrency == PESSIMISTIC ? "Failed to lock keys (all partition nodes left the grid)" :
                 "Failed to map keys to nodes (partition is not mapped to any node";
 
-
         GridTestUtils.assertThrowsAnyCause(log, new Callable<Void>() {
             @Override public Void call() {
                 IgniteCache cache2 = client.cache(CACHE2);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearReadersSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearReadersSelfTest.java
index df70e35..4ca513f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearReadersSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearReadersSelfTest.java
@@ -262,7 +262,6 @@ public class GridCacheNearReadersSelfTest extends GridCommonAbstractTest {
         if (f1 != null)
             f1.get();
 
-
         IgniteInternalFuture<Object> f2 = ((IgniteKernal)g2).internalCache(DEFAULT_CACHE_NAME).preloader().request(
             ((IgniteKernal)g2).internalCache(DEFAULT_CACHE_NAME).context(),
             cacheKeys,
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheStoreUpdateTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheStoreUpdateTest.java
index 0ba5d8e..9a3523f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheStoreUpdateTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheStoreUpdateTest.java
@@ -230,9 +230,7 @@ public class GridNearCacheStoreUpdateTest extends GridCommonAbstractTest {
                 }
             });
 
-
 //            IgniteInternalFuture<Object> fut2 = null;
-
             // TODO Sometimes Near cache becomes inconsistent
 //            if (!tx) {
 //                // TODO: IGNITE-3498
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRebalancingSyncCheckDataTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRebalancingSyncCheckDataTest.java
index 0e2d4f3..85b35b9 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRebalancingSyncCheckDataTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRebalancingSyncCheckDataTest.java
@@ -63,7 +63,6 @@ public class GridCacheRebalancingSyncCheckDataTest extends GridCommonAbstractTes
         for (int i = 0; i < KEYS; i++)
             cache.put(i, i);
 
-
         for (int i = 0; i < 3; i++) {
             log.info("Iteration: " + i);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/eviction/EvictionPolicyFactoryAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/eviction/EvictionPolicyFactoryAbstractTest.java
index 7cab8b8..1f19e10 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/eviction/EvictionPolicyFactoryAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/eviction/EvictionPolicyFactoryAbstractTest.java
@@ -649,6 +649,7 @@ public abstract class EvictionPolicyFactoryAbstractTest<T extends EvictionPolicy
 
         return (T)((GridCacheEvictionManager)evictMgr).getEvictionPolicy();
     }
+
     /**
      * @param c1 Policy collection.
      * @param c2 Expected list.
@@ -887,7 +888,7 @@ public abstract class EvictionPolicyFactoryAbstractTest<T extends EvictionPolicy
     @Deprecated
     protected T createPolicy() {
         return null;
-    };
+    }
 
     /**
      * @return Policy.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/integration/IgniteCacheStoreSessionWriteBehindAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/integration/IgniteCacheStoreSessionWriteBehindAbstractTest.java
index 6087320..d5af190 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/integration/IgniteCacheStoreSessionWriteBehindAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/integration/IgniteCacheStoreSessionWriteBehindAbstractTest.java
@@ -79,7 +79,6 @@ public abstract class IgniteCacheStoreSessionWriteBehindAbstractTest extends Ign
     protected CacheConfiguration cacheConfiguration(String igniteInstanceName) throws Exception {
         CacheConfiguration ccfg0 = super.cacheConfiguration(igniteInstanceName);
 
-
         ccfg0.setReadThrough(true);
         ccfg0.setWriteThrough(true);
         ccfg0.setWriteBehindBatchSize(10);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/local/GridCacheLocalEvictionEventSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/local/GridCacheLocalEvictionEventSelfTest.java
index 237dd66..6c1a30c 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/local/GridCacheLocalEvictionEventSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/local/GridCacheLocalEvictionEventSelfTest.java
@@ -35,6 +35,7 @@ public class GridCacheLocalEvictionEventSelfTest extends GridCacheEvictionEventA
     public void beforeGridCacheLocalEvictionEventSelfTest() {
         MvccFeatureChecker.skipIfNotSupported(MvccFeatureChecker.Feature.LOCAL_CACHE);
     }
+
     /** {@inheritDoc} */
     @Override protected IgniteConfiguration getConfiguration() throws Exception {
         MvccFeatureChecker.skipIfNotSupported(MvccFeatureChecker.Feature.LOCAL_CACHE);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccAbstractTest.java
index 0d78daa..7509392 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccAbstractTest.java
@@ -843,7 +843,6 @@ public abstract class CacheMvccAbstractTest extends GridCommonAbstractTest {
         cache.cache.query(qry).getAll();
     }
 
-
     /**
      * Merge account by means of SQL API.
      *
@@ -2183,7 +2182,6 @@ public abstract class CacheMvccAbstractTest extends GridCommonAbstractTest {
         }
     }
 
-
     /**
      * @param caches Caches.
      * @param rnd Random.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccTxFailoverTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccTxFailoverTest.java
index 48f689c..2d69101 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccTxFailoverTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccTxFailoverTest.java
@@ -128,7 +128,6 @@ public class CacheMvccTxFailoverTest extends GridCommonAbstractTest {
         checkSingleNodeRestart(false, true, false);
     }
 
-
     /**
      * @param rollBack If {@code True} then Tx will be rolled backup, committed otherwise.
      * @param recoverFromWAL If {@code True} then Tx recovery from WAL will be checked,
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUnsupportedTxModesTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUnsupportedTxModesTest.java
index 7120cee..5dfa18b 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUnsupportedTxModesTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccUnsupportedTxModesTest.java
@@ -42,6 +42,7 @@ import static org.apache.ignite.transactions.TransactionIsolation.SERIALIZABLE;
 public class MvccUnsupportedTxModesTest extends GridCommonAbstractTest {
     /** */
     private static IgniteCache<Object, Object> cache;
+
     /** */
     private static final CacheEntryProcessor<Object, Object, Object> testEntryProcessor = (entry, arguments) -> null;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsDestroyCacheAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsDestroyCacheAbstractTest.java
index 2fe9ca7..56042bf 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsDestroyCacheAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsDestroyCacheAbstractTest.java
@@ -123,7 +123,6 @@ public abstract class IgnitePdsDestroyCacheAbstractTest extends GridCommonAbstra
         }
     }
 
-
     /**
      * @param ignite Ignite instance.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
index 5545d55..1864c0b 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
@@ -250,7 +250,6 @@ public class MemoryPolicyInitializationTest extends GridCommonAbstractTest {
         );
     }
 
-
     /**
      *
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/CheckpointBufferDeadlockTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/CheckpointBufferDeadlockTest.java
index 6cfc5ec..28acd17 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/CheckpointBufferDeadlockTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/CheckpointBufferDeadlockTest.java
@@ -365,5 +365,4 @@ public class CheckpointBufferDeadlockTest extends GridCommonAbstractTest {
         }
     }
 
-
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheWalDisabledOnRebalancingTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheWalDisabledOnRebalancingTest.java
index 21ce122..6661f3b 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheWalDisabledOnRebalancingTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheWalDisabledOnRebalancingTest.java
@@ -168,7 +168,6 @@ public class IgnitePdsCacheWalDisabledOnRebalancingTest extends GridCommonAbstra
 
         cfg.setCommunicationSpi(commSpi);
 
-
         return cfg;
     }
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsDataRegionMetricsTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsDataRegionMetricsTest.java
index df52c91..b398623 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsDataRegionMetricsTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsDataRegionMetricsTest.java
@@ -114,6 +114,7 @@ public class IgnitePdsDataRegionMetricsTest extends GridCommonAbstractTest {
 
         System.clearProperty(IGNITE_BASELINE_AUTO_ADJUST_ENABLED);
     }
+
     /**
      * @return Ignite cache configuration.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/CheckpointFreeListTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/CheckpointFreeListTest.java
index 26441e5..fe244b4 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/CheckpointFreeListTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/CheckpointFreeListTest.java
@@ -72,8 +72,10 @@ import static org.apache.ignite.testframework.GridTestUtils.waitForCondition;
 public class CheckpointFreeListTest extends GridCommonAbstractTest {
     /** Ip finder. */
     private static final TcpDiscoveryIpFinder IP_FINDER = new TcpDiscoveryVmIpFinder(true);
+
     /** Cache name. */
     private static final String CACHE_NAME = "cacheOne";
+
     /** Cache size */
     public static final int CACHE_SIZE = 30000;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteCheckpointDirtyPagesForLowLoadTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteCheckpointDirtyPagesForLowLoadTest.java
index 62212f3..a38a7b6 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteCheckpointDirtyPagesForLowLoadTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteCheckpointDirtyPagesForLowLoadTest.java
@@ -45,8 +45,10 @@ import org.junit.Test;
 public class IgniteCheckpointDirtyPagesForLowLoadTest extends GridCommonAbstractTest {
     /** Caches in group. */
     private static final int CACHES_IN_GRP = 1;
+
     /** Groups. */
     private static final int GROUPS = 1;
+
     /** Parts. */
     private static final int PARTS = 1024;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteMassLoadSandboxTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteMassLoadSandboxTest.java
index 0b0b984..225ff0d 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteMassLoadSandboxTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/IgniteMassLoadSandboxTest.java
@@ -572,6 +572,7 @@ public class IgniteMassLoadSandboxTest extends GridCommonAbstractTest {
     public static class HugeIndexedObject {
         /** Data. */
         private byte[] data;
+
         /** */
         @QuerySqlField(index = true)
         private int iVal;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/ProgressWatchdog.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/ProgressWatchdog.java
index 55ca2a9..227ed90 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/ProgressWatchdog.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/checkpoint/ProgressWatchdog.java
@@ -54,6 +54,7 @@ import org.jetbrains.annotations.NotNull;
  */
 class ProgressWatchdog {
     public static final int CHECK_PERIOD_MSEC = 1000;
+
     /** Progress counter, Overall records processed. */
     private final LongAdder overallRecordsProcessed = new LongAdder();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheDestroyDuringCheckpointTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheDestroyDuringCheckpointTest.java
index 047eb20..8b41007 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheDestroyDuringCheckpointTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheDestroyDuringCheckpointTest.java
@@ -112,7 +112,6 @@ public class IgnitePdsCacheDestroyDuringCheckpointTest extends GridCommonAbstrac
         }
     }
 
-
     /** */
     private void populateCache(Ignite client) {
         for (int i = 0; i < NUM_CACHES; i++) {
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
index 73a226c..586bb6a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
@@ -694,7 +694,6 @@ public class IgniteUidAsConsistentIdMigrationTest extends GridCommonAbstractTest
         assertDirectoryExist(curFolder, subFolderNames);
     }
 
-
     /**
      * Checks one folder existence.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/IgniteWalReaderTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/IgniteWalReaderTest.java
index 77dd08b..d48e752 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/IgniteWalReaderTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/IgniteWalReaderTest.java
@@ -1625,6 +1625,7 @@ public class IgniteWalReaderTest extends GridCommonAbstractTest {
     private static class Organization {
         /** Key. */
         private final int key;
+
         /** Name. */
         private final String name;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/MockWalIteratorFactory.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/MockWalIteratorFactory.java
index b783373..257e439 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/MockWalIteratorFactory.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/reader/MockWalIteratorFactory.java
@@ -58,7 +58,6 @@ public class MockWalIteratorFactory {
     /** Segments count in work dir. */
     private int segments;
 
-
     /**
      * Creates factory
      * @param log Logger.
@@ -78,6 +77,7 @@ public class MockWalIteratorFactory {
         this.subfolderName = subfolderName;
         this.segments = segments;
     }
+
     /**
      * Creates iterator
      * @param wal WAL directory without node consistent id
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/FullPageIdTableTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/FullPageIdTableTest.java
index fd23ce5..5ddbb2f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/FullPageIdTableTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/FullPageIdTableTest.java
@@ -239,7 +239,6 @@ public class FullPageIdTableTest  {
         System.out.println(msg);
     }
 
-
     /**
      * @param tbl Table to check.
      * @param check Expected mapping.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/standbycluster/IgniteChangeGlobalStateDataStructureTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/standbycluster/IgniteChangeGlobalStateDataStructureTest.java
index e39a383..a5fedc0 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/standbycluster/IgniteChangeGlobalStateDataStructureTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/standbycluster/IgniteChangeGlobalStateDataStructureTest.java
@@ -182,7 +182,6 @@ public class IgniteChangeGlobalStateDataStructureTest extends IgniteChangeGlobal
             }
         });
 
-
         assertEquals(4, latchAct1.count());
         assertEquals(4, latchAct2.count());
         assertEquals(4, latchAct3.count());
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/TrackingPageIOTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/TrackingPageIOTest.java
index e4f0fe9..f472b49 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/TrackingPageIOTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/tree/io/TrackingPageIOTest.java
@@ -44,7 +44,6 @@ public class TrackingPageIOTest {
     /** Page size. */
     public static final int PAGE_SIZE = 4096;
 
-
     /** */
     private final TrackingPageIO io = TrackingPageIO.VERSIONS.latest();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/FilteredWalIteratorTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/FilteredWalIteratorTest.java
index 6ca9127..dd40f81 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/FilteredWalIteratorTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/FilteredWalIteratorTest.java
@@ -57,12 +57,16 @@ import static org.mockito.Mockito.when;
 public class FilteredWalIteratorTest {
     /** Count of different records sequence per filter. */
     private static final int ITERATORS_COUNT_PER_FILTER = 20;
+
     /** Count of records on one iterator. */
     private static final int RECORDS_COUNT_IN_ITERATOR = 30;
+
     /** **/
     private static Random random = new Random();
+
     /** **/
     private static FileWALPointer ZERO_POINTER = new FileWALPointer(0, 0, 0);
+
     /** **/
     private static IgniteBiTuple<WALPointer, WALRecord> TEST_RECORD = new IgniteBiTuple<>(
         ZERO_POINTER, new MetastoreDataRecord("key", new byte[0])
@@ -70,8 +74,10 @@ public class FilteredWalIteratorTest {
 
     /** Customized iterator for test. */
     private WALIterator mockedIter;
+
     /** Iterator filter for test. */
     private Predicate<IgniteBiTuple<WALPointer, WALRecord>> filter;
+
     /** Expected result for iterator and filter. */
     private List<IgniteBiTuple<WALPointer, WALRecord>> expRes;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIteratorTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIteratorTest.java
index 641d11e..b3b9e3d 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIteratorTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/reader/StandaloneWalRecordsIteratorTest.java
@@ -207,7 +207,6 @@ public class StandaloneWalRecordsIteratorTest extends GridCommonAbstractTest {
         return new IgniteWalIteratorFactory(log).iterator(params.filesOrDirs(walDir));
     }
 
-
     /**
      * @param walDir Wal directory.
      */
@@ -273,6 +272,7 @@ public class StandaloneWalRecordsIteratorTest extends GridCommonAbstractTest {
     private static class CountedFileIO extends RandomAccessFileIO {
         /** Wal open counter. */
         private static final AtomicInteger WAL_OPEN_COUNTER = new AtomicInteger();
+
         /** Wal close counter. */
         private static final AtomicInteger WAL_CLOSE_COUNTER = new AtomicInteger();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/scanner/WalScannerTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/scanner/WalScannerTest.java
index b502de2..098f16c 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/scanner/WalScannerTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/wal/scanner/WalScannerTest.java
@@ -62,6 +62,7 @@ import static org.mockito.Mockito.when;
 public class WalScannerTest {
     /** **/
     private static final String TEST_DUMP_FILE = "output.txt";
+
     /** **/
     private static FileWALPointer ZERO_POINTER = new FileWALPointer(0, 0, 0);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/CacheScanQueryFailoverTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/CacheScanQueryFailoverTest.java
index 6f2629a..488ce18 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/CacheScanQueryFailoverTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/CacheScanQueryFailoverTest.java
@@ -100,7 +100,7 @@ public class CacheScanQueryFailoverTest extends GridCommonAbstractTest {
         queryCachesWithFailedPredicates(srv, cfg);
 
         assertEquals(client.cluster().nodes().size(), 5);
-    };
+    }
 
     /**
      * @throws Exception If failed.
@@ -112,7 +112,7 @@ public class CacheScanQueryFailoverTest extends GridCommonAbstractTest {
         queryCachesWithFailedPredicates(srv, new CacheConfiguration(LOCAL_CACHE_NAME).setCacheMode(LOCAL));
 
         assertEquals(srv.cluster().nodes().size(), 4);
-    };
+    }
 
     /**
      * @param ignite Ignite instance.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryAsyncFilterListenerTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryAsyncFilterListenerTest.java
index 540de0c..1d88a05 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryAsyncFilterListenerTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryAsyncFilterListenerTest.java
@@ -724,7 +724,6 @@ public class CacheContinuousQueryAsyncFilterListenerTest extends GridCommonAbstr
                         }
                     };
 
-
                 QueryCursor qry = null;
                 MutableCacheEntryListenerConfiguration<QueryTestKey, QueryTestValue> lsnrCfg = null;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryOperationP2PTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryOperationP2PTest.java
index c37bdc6..39debb0 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryOperationP2PTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryOperationP2PTest.java
@@ -147,6 +147,7 @@ public class CacheContinuousQueryOperationP2PTest extends GridCommonAbstractTest
 
         testContinuousQuery(ccfg, false);
     }
+
     /**
      * @throws Exception If failed.
      */
@@ -198,6 +199,7 @@ public class CacheContinuousQueryOperationP2PTest extends GridCommonAbstractTest
 
         testContinuousQuery(ccfg, false);
     }
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryRandomOperationsTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryRandomOperationsTest.java
index a31a850..40af9db 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryRandomOperationsTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryRandomOperationsTest.java
@@ -827,7 +827,6 @@ public class CacheContinuousQueryRandomOperationsTest extends GridCommonAbstract
         }
     }
 
-
     /**
      * @param event Event.
      * @param type Event type.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheKeepBinaryIterationTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheKeepBinaryIterationTest.java
index 8c97915..4d01ef0 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheKeepBinaryIterationTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheKeepBinaryIterationTest.java
@@ -144,7 +144,6 @@ public class CacheKeepBinaryIterationTest extends GridCommonAbstractTest {
         doTestLocalEntries(ccfg, false, false);
     }
 
-
     /**
      * @param ccfg Cache configuration.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/GridCacheContinuousQueryConcurrentTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/GridCacheContinuousQueryConcurrentTest.java
index d30c5b6..1016e45 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/GridCacheContinuousQueryConcurrentTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/continuous/GridCacheContinuousQueryConcurrentTest.java
@@ -424,8 +424,6 @@ public class GridCacheContinuousQueryConcurrentTest extends GridCommonAbstractTe
             new SingletonFactory<>(new KeyEventFilter(key, id)), false, true);
     }
 
-
-
     /**
      * @param cacheMode Cache mode.
      * @param atomicMode Atomicy mode.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/store/IgnteCacheClientWriteBehindStoreNonCoalescingTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/store/IgnteCacheClientWriteBehindStoreNonCoalescingTest.java
index 2e4212a..9a47c82 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/store/IgnteCacheClientWriteBehindStoreNonCoalescingTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/store/IgnteCacheClientWriteBehindStoreNonCoalescingTest.java
@@ -154,7 +154,6 @@ public class IgnteCacheClientWriteBehindStoreNonCoalescingTest extends IgniteCac
         @Override public void write(Cache.Entry<? extends Object, ? extends Object> entry) {
             Object oldVal = storeMap.put(entry.getKey(), entry.getValue());
 
-
             if (oldVal != null) {
                 Integer oldInt = (Integer) oldVal;
                 Integer newInt = (Integer)entry.getValue();
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/AbstractTransactionIntergrityTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/AbstractTransactionIntergrityTest.java
index cb05af6..dfa4f4b 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/AbstractTransactionIntergrityTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/AbstractTransactionIntergrityTest.java
@@ -423,12 +423,22 @@ public class AbstractTransactionIntergrityTest extends GridCommonAbstractTest {
         /**
          * Account states before transaction.
          */
-        AccountState before1, before2;
+        AccountState before1;
+
+        /**
+         * Account states before transaction.
+         */
+        AccountState before2;
+
+        /**
+         * Account states after transaction.
+         */
+        AccountState after1;
 
         /**
          * Account states after transaction.
          */
-        AccountState after1, after2;
+        AccountState after2;
 
         /**
          * Transferred coins between accounts during this transaction.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxDeadlockDetectionUnmasrhalErrorsTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxDeadlockDetectionUnmasrhalErrorsTest.java
index 5fcb01b..d1ae774 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxDeadlockDetectionUnmasrhalErrorsTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxDeadlockDetectionUnmasrhalErrorsTest.java
@@ -198,8 +198,6 @@ public class TxDeadlockDetectionUnmasrhalErrorsTest extends GridCommonAbstractTe
         }
     }
 
-
-
     /**
      * @param ignite Ignite.
      * @param name Name.
@@ -214,6 +212,4 @@ public class TxDeadlockDetectionUnmasrhalErrorsTest extends GridCommonAbstractTe
 
         return ignite.getOrCreateCache(ccfg);
     }
-
-
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateAbstractTest.java
index 05d0988..fc53513 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateAbstractTest.java
@@ -570,6 +570,7 @@ public abstract class TxPartitionCounterStateAbstractTest extends GridCommonAbst
     protected class TxCallbackAdapter implements TxCallback {
         /** */
         private Map<Integer, IgniteUuid> txMap = new ConcurrentHashMap<>();
+
         /** */
         private Map<IgniteUuid, Integer> revTxMap = new ConcurrentHashMap<>();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateOnePrimaryOneBackupTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateOnePrimaryOneBackupTest.java
index 8261736..88e6555 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateOnePrimaryOneBackupTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxPartitionCounterStateOnePrimaryOneBackupTest.java
@@ -90,7 +90,6 @@ public class TxPartitionCounterStateOnePrimaryOneBackupTest extends TxPartitionC
         doTestPrepareCommitReorder_2(true);
     }
 
-
     /**
      * Tests reproduces the problem: if partition was marked for clear on rebalance, it should never be selected for
      * historical rebalance or only partial data defined by counter range will be loaded.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxRollbackOnTimeoutTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxRollbackOnTimeoutTest.java
index 7dc673b..b3445ca 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxRollbackOnTimeoutTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/transactions/TxRollbackOnTimeoutTest.java
@@ -700,7 +700,6 @@ public class TxRollbackOnTimeoutTest extends GridCommonAbstractTest {
         doTestRollbackOnTimeoutTxRemap(PESSIMISTIC, SERIALIZABLE, false);
     }
 
-
     /**
      * @param concurrency Concurrency.
      * @param isolation Isolation.
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cluster/BaselineAutoAdjustTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cluster/BaselineAutoAdjustTest.java
index 04fa266..43bc9ed 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cluster/BaselineAutoAdjustTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cluster/BaselineAutoAdjustTest.java
@@ -54,6 +54,7 @@ import static org.junit.Assume.assumeTrue;
 public class BaselineAutoAdjustTest extends GridCommonAbstractTest {
     /** */
     private static final String TEST_NAME = "TEST_NAME";
+
     /** */
     private static int autoAdjustTimeout = 5000;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/continuous/GridMessageListenSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/continuous/GridMessageListenSelfTest.java
index fea488a..d8bcd78 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/continuous/GridMessageListenSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/continuous/GridMessageListenSelfTest.java
@@ -443,8 +443,10 @@ public class GridMessageListenSelfTest extends GridCommonAbstractTest {
     private static class Listener implements P2<UUID, Object> {
         /** Source node id. */
         private final UUID sourceNodeId;
+
         /** */
         private final boolean ret;
+
         /** */
         @IgniteInstanceResource
         private Ignite ignite;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java
index ddd3373..d0aaf03 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/database/BPlusTreeSelfTest.java
@@ -2630,7 +2630,6 @@ public class BPlusTreeSelfTest extends GridCommonAbstractTest {
             }
         }, 4, "find");
 
-
         asyncRunFut = new GridCompoundFuture<>();
 
         asyncRunFut.add((IgniteInternalFuture)fut);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessorTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessorTest.java
index 4bc59da..e42bb63 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessorTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/diagnostic/DiagnosticProcessorTest.java
@@ -58,11 +58,13 @@ import static org.apache.ignite.internal.processors.diagnostic.DiagnosticProcess
 public class DiagnosticProcessorTest extends GridCommonAbstractTest {
     /** Cache name. */
     private static final String CACHE_NAME = "cache0";
+
     /** Test directory for dump. */
     private static final String TEST_DUMP_PAGE_FILE = "testDumpPage";
 
     /** One time configured diagnosticProcessor. */
     private static DiagnosticProcessor diagnosticProcessor;
+
     /** One time configured page id for searching. */
     private static T2<Integer, Long> expectedPageId;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsLocalSecondaryFileSystemDualAbstractSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsLocalSecondaryFileSystemDualAbstractSelfTest.java
index c4a8376..9cc3c5f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsLocalSecondaryFileSystemDualAbstractSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsLocalSecondaryFileSystemDualAbstractSelfTest.java
@@ -69,7 +69,6 @@ public abstract class IgfsLocalSecondaryFileSystemDualAbstractSelfTest extends I
     private final Boolean PROPERTIES_SUPPORT =
         IgniteSystemProperties.getBoolean("IGFS_LOCAL_FS_PROPERTIES_SUPPORT", false);
 
-
     /**
      * Constructor.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStoragePersistentTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStoragePersistentTest.java
index 6280c4b..56e31b1 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStoragePersistentTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStoragePersistentTest.java
@@ -290,7 +290,6 @@ public class DistributedMetaStoragePersistentTest extends DistributedMetaStorage
 
         stopGrid(3);
 
-
         for (int i = 0; i < cnt; i++)
             startGrid(i);
 
@@ -334,7 +333,6 @@ public class DistributedMetaStoragePersistentTest extends DistributedMetaStorage
 
         stopGrid(5);
 
-
         startGrid(1);
 
         startGrid(0);
@@ -380,7 +378,6 @@ public class DistributedMetaStoragePersistentTest extends DistributedMetaStorage
 
         stopGrid(4);
 
-
         startGrid(1);
 
         startGrid(0);
@@ -430,7 +427,6 @@ public class DistributedMetaStoragePersistentTest extends DistributedMetaStorage
 
         stopGrid(5);
 
-
         startGrid(2);
 
         startGrid(0);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnCoordinatorFailTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnCoordinatorFailTest.java
index 06651f5..b5bd3da 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnCoordinatorFailTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnCoordinatorFailTest.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.service;
 
-
 /**
  * Tests that requests of change service's state won't be missed and will be handled correctly if coordinator fail.
  *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnNodesFailTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnNodesFailTest.java
index 61f6981..29e7f09 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnNodesFailTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceDeploymentProcessingOnNodesFailTest.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.service;
 
-
 /**
  * Tests that requests of change service's state won't be missed and will be handled correctly on a node failed.
  *
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/sql/SqlParserSetStreamingSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/sql/SqlParserSetStreamingSelfTest.java
index ea73ed6..3465ade 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/sql/SqlParserSetStreamingSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/sql/SqlParserSetStreamingSelfTest.java
@@ -49,7 +49,6 @@ public class SqlParserSetStreamingSelfTest extends SqlParserAbstractSelfTest {
         parseValidate("set streaming on per_node_buffer_size 50 flush_frequency 500 " +
             "per_node_parallel_operations 4 allow_overwrite on batch_size 100 ordered", true, true, 100, 4, 50, 500, true);
 
-
         assertParseError(QueryUtils.DFLT_SCHEMA, "set",
             "Failed to parse SQL statement \"set[*]\": Unexpected end of command (expected: \"STREAMING\")");
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/stat/IoStatisticsCacheSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/stat/IoStatisticsCacheSelfTest.java
index a50059f..fad1524 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/stat/IoStatisticsCacheSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/stat/IoStatisticsCacheSelfTest.java
@@ -102,7 +102,6 @@ public class IoStatisticsCacheSelfTest extends GridCommonAbstractTest {
             .setName(CACHE2_IN_GROUP_NAME)
             .setGroupName(CACHE_GROUP_NAME);
 
-
         DataStorageConfiguration dsCfg = new DataStorageConfiguration()
             .setDefaultDataRegionConfiguration(
                 new DataRegionConfiguration()
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/BitSetIntSetTest.java b/modules/core/src/test/java/org/apache/ignite/internal/util/BitSetIntSetTest.java
index 79aaffb..0846f80 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/BitSetIntSetTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/BitSetIntSetTest.java
@@ -125,7 +125,6 @@ public class BitSetIntSetTest extends GridCommonAbstractTest {
         assertEquals(11, (int)list.get(3));
         assertEquals(1025, (int)list.get(4));
 
-
         assertFalse(bitSet.remove(2));
         assertEquals(5, bitSet.size());
 
@@ -151,7 +150,6 @@ public class BitSetIntSetTest extends GridCommonAbstractTest {
         bitSetInt.add(11);
         bitSetInt.add(1025);
 
-
         assertTrue(bitSetInt.contains(1));
         assertFalse(bitSetInt.contains(2));
         assertFalse(bitSetInt.contains(3));
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/IgniteUtilsSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/util/IgniteUtilsSelfTest.java
index 5cfc0ea..7784602 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/IgniteUtilsSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/IgniteUtilsSelfTest.java
@@ -716,7 +716,6 @@ public class IgniteUtilsSelfTest extends GridCommonAbstractTest {
         assertTrue(ips.get(ips.size() - 1).isUnresolved());
     }
 
-
     @Test
     public void testMD5Calculation() throws Exception {
         String md5 = U.calculateMD5(new ByteArrayInputStream("Corrupted information.".getBytes()));
@@ -1208,12 +1207,18 @@ public class IgniteUtilsSelfTest extends GridCommonAbstractTest {
     private @interface Ann2 {}
 
     private static class A1 implements I3, I5 {}
+
     private static class A2 extends A1 {}
+
     private static class A3 implements I5 {}
 
     @Ann1 private interface I1 {}
+
     private interface I2 extends I1 {}
+
     private interface I3 extends I2 {}
+
     @Ann2 private interface I4 {}
+
     private interface I5 extends I4 {}
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/future/IgniteFutureImplTest.java b/modules/core/src/test/java/org/apache/ignite/internal/util/future/IgniteFutureImplTest.java
index 2409670..e67b3b1 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/future/IgniteFutureImplTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/future/IgniteFutureImplTest.java
@@ -754,7 +754,6 @@ public class IgniteFutureImplTest extends GridCommonAbstractTest {
             }
         }, customExec);
 
-
         assertExceptionThrown(err, chained1);
         assertExceptionThrown(err, fut);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/LoadWithCorruptedLibFileTestRunner.java b/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/LoadWithCorruptedLibFileTestRunner.java
index 7ca3b1a..0ec09b3 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/LoadWithCorruptedLibFileTestRunner.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/LoadWithCorruptedLibFileTestRunner.java
@@ -26,6 +26,7 @@ import java.io.IOException;
  */
 public class LoadWithCorruptedLibFileTestRunner {
     public static final String TMP_DIR_FOR_TEST = System.getProperty("user.home");
+
     public static final String LOADED_LIB_FILE_NAME = System.mapLibraryName(IpcSharedMemoryNativeLoader.LIB_NAME);
 
     /**
@@ -62,4 +63,4 @@ public class LoadWithCorruptedLibFileTestRunner {
             out.write("Corrupted file information instead of good info.\n".getBytes());
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/nio/GridNioDelimitedBufferSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/util/nio/GridNioDelimitedBufferSelfTest.java
index 5a57c0a..ecd9dd4 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/nio/GridNioDelimitedBufferSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/nio/GridNioDelimitedBufferSelfTest.java
@@ -56,7 +56,6 @@ public class GridNioDelimitedBufferSelfTest {
             for (int j = 0; j < len; j++)
                 sb.append((char)(rnd.nextInt(26) + 'a'));
 
-
             strs.add(sb.toString());
         }
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapMapAbstractSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapMapAbstractSelfTest.java
index 5a3ca68..78677da 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapMapAbstractSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapMapAbstractSelfTest.java
@@ -173,7 +173,6 @@ public abstract class GridOffHeapMapAbstractSelfTest extends GridCommonAbstractT
         for (int i = 0; i < 10; i++)
             kv.put(string(), string());
 
-
         for (Map.Entry<String, String> e : kv.entrySet()) {
             String key = e.getKey();
             String val = e.getValue();
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMapPerformanceAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMapPerformanceAbstractTest.java
index 315be03..2f80209 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMapPerformanceAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/offheap/GridOffHeapPartitionedMapPerformanceAbstractTest.java
@@ -286,6 +286,7 @@ public abstract class GridOffHeapPartitionedMapPerformanceAbstractTest extends G
 
         info("Average random operation performance: " + (totalOpCnt.get() * 1000) / (end - start) + " ops/sec");
     }
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java b/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java
index f120135..6c4549d 100644
--- a/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java
@@ -960,7 +960,6 @@ public class GridBasicPerformanceTest {
             GridUnsafe.freeMemory(l);
     }
 
-
     /**
      * Test unsafe vs. new.
      * @throws InterruptedException If failed.
diff --git a/modules/core/src/test/java/org/apache/ignite/lang/utils/GridListSetSelfTest.java b/modules/core/src/test/java/org/apache/ignite/lang/utils/GridListSetSelfTest.java
index 80ecda9..068775b 100644
--- a/modules/core/src/test/java/org/apache/ignite/lang/utils/GridListSetSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/lang/utils/GridListSetSelfTest.java
@@ -78,7 +78,6 @@ public class GridListSetSelfTest extends GridCommonAbstractTest {
         assertEquals(7, old.value());
         assertEquals(7, old.other());
 
-
         // Size should not have changed.
         assertEquals(8, set.size());
 
diff --git a/modules/core/src/test/java/org/apache/ignite/loadtests/cache/GridCacheDataStructuresLoadTest.java b/modules/core/src/test/java/org/apache/ignite/loadtests/cache/GridCacheDataStructuresLoadTest.java
index 745828e..17e9611 100644
--- a/modules/core/src/test/java/org/apache/ignite/loadtests/cache/GridCacheDataStructuresLoadTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/loadtests/cache/GridCacheDataStructuresLoadTest.java
@@ -354,7 +354,6 @@ public final class GridCacheDataStructuresLoadTest extends GridCacheAbstractLoad
             }
         };
 
-
     /** Reentrant lock read closure. */
     private final CIX1<Ignite> reentrantLockReadClos =
         new CIX1<Ignite>() {
diff --git a/modules/core/src/test/java/org/apache/ignite/loadtests/direct/redeploy/GridSingleSplitsRedeployLoadTest.java b/modules/core/src/test/java/org/apache/ignite/loadtests/direct/redeploy/GridSingleSplitsRedeployLoadTest.java
index 5400172..895934b 100644
--- a/modules/core/src/test/java/org/apache/ignite/loadtests/direct/redeploy/GridSingleSplitsRedeployLoadTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/loadtests/direct/redeploy/GridSingleSplitsRedeployLoadTest.java
@@ -129,7 +129,6 @@ public class GridSingleSplitsRedeployLoadTest extends GridCommonAbstractTest {
 
         },  "grid-notaop-deploy-load-test").start();
 
-
         GridTestUtils.runMultiThreaded(new Runnable() {
             /** {@inheritDoc} */
             @Override public void run() {
diff --git a/modules/core/src/test/java/org/apache/ignite/marshaller/MarshallerEnumDeadlockMultiJvmTest.java b/modules/core/src/test/java/org/apache/ignite/marshaller/MarshallerEnumDeadlockMultiJvmTest.java
index 41c1883..411b173 100644
--- a/modules/core/src/test/java/org/apache/ignite/marshaller/MarshallerEnumDeadlockMultiJvmTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/marshaller/MarshallerEnumDeadlockMultiJvmTest.java
@@ -119,8 +119,10 @@ public class MarshallerEnumDeadlockMultiJvmTest extends GridCommonAbstractTest {
     private static class UnmarshalCallable implements IgniteCallable<Object> {
         /** */
         private final byte[] one;
+
         /** */
         private final byte[] two;
+
         /** */
         @IgniteInstanceResource
         private Ignite ign;
diff --git a/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PMissedResourceCacheSizeSelfTest.java b/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PMissedResourceCacheSizeSelfTest.java
index 6c9cadc..1b0c25d 100644
--- a/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PMissedResourceCacheSizeSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PMissedResourceCacheSizeSelfTest.java
@@ -250,6 +250,7 @@ public class GridP2PMissedResourceCacheSizeSelfTest extends GridCommonAbstractTe
     public void testSize0SharedMode() throws Exception {
         processSize0Test(DeploymentMode.SHARED);
     }
+
     /**
      * Test GridDeploymentMode.PRIVATE mode.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PTestJob.java b/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PTestJob.java
index 2036e45..71b5eb42 100644
--- a/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PTestJob.java
+++ b/modules/core/src/test/java/org/apache/ignite/p2p/GridP2PTestJob.java
@@ -44,7 +44,6 @@ public class GridP2PTestJob extends ComputeJobAdapter {
     @IgniteInstanceResource
     private Ignite ignite;
 
-
     /**
      * @param arg is argument of GridP2PTestJob.
      */
@@ -130,4 +129,4 @@ public class GridP2PTestJob extends ComputeJobAdapter {
 
         return arg * 10;
     }
-}
\ No newline at end of file
+}
diff --git a/modules/core/src/test/java/org/apache/ignite/session/GridSessionTaskWaitJobAttributeSelfTest.java b/modules/core/src/test/java/org/apache/ignite/session/GridSessionTaskWaitJobAttributeSelfTest.java
index 91fd06f..807d5ba 100644
--- a/modules/core/src/test/java/org/apache/ignite/session/GridSessionTaskWaitJobAttributeSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/session/GridSessionTaskWaitJobAttributeSelfTest.java
@@ -148,7 +148,6 @@ public class GridSessionTaskWaitJobAttributeSelfTest extends GridCommonAbstractT
 
                         taskSes.setAttribute("testName", "testVal");
 
-
                         return 1;
                     }
                 });
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/ExponentialBackoffTimeoutStrategyTest.java b/modules/core/src/test/java/org/apache/ignite/spi/ExponentialBackoffTimeoutStrategyTest.java
index 1e5f52c..648143e 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/ExponentialBackoffTimeoutStrategyTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/ExponentialBackoffTimeoutStrategyTest.java
@@ -93,7 +93,5 @@ public class ExponentialBackoffTimeoutStrategyTest extends GridCommonAbstractTes
                 return;
             }
         }
-
-
     }
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationStatisticsTest.java b/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationStatisticsTest.java
index 8b30216..b84211d 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationStatisticsTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationStatisticsTest.java
@@ -135,7 +135,6 @@ public class TcpCommunicationStatisticsTest extends GridCommonAbstractTest {
             // Send custom message from node0 to node1.
             grid(0).context().io().sendToGridTopic(grid(1).cluster().localNode(), GridTopic.TOPIC_IO_TEST, new GridTestMessage(), GridIoPolicy.PUBLIC_POOL);
 
-
             latch.await(10, TimeUnit.SECONDS);
 
             ClusterGroup clusterGroupNode1 = grid(0).cluster().forNodeId(grid(1).localNode().id());
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/FilterDataForClientNodeDiscoveryTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/FilterDataForClientNodeDiscoveryTest.java
index 9866ad74..023a711 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/FilterDataForClientNodeDiscoveryTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/FilterDataForClientNodeDiscoveryTest.java
@@ -106,7 +106,6 @@ public class FilterDataForClientNodeDiscoveryTest extends GridCommonAbstractTest
         }
     }
 
-
     /**
      * @param nodeIdx Node index.
      * @param client Client flag.
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/LongClientConnectToClusterTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/LongClientConnectToClusterTest.java
index 53f32ba..319bcad 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/LongClientConnectToClusterTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/LongClientConnectToClusterTest.java
@@ -45,6 +45,7 @@ import org.junit.Test;
 public class LongClientConnectToClusterTest extends GridCommonAbstractTest {
     /** Client instance name. */
     public static final String CLIENT_INSTANCE_NAME = "client";
+
     /** Client metrics update count. */
     private static volatile int clientMetricsUpdateCnt;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/IgniteClientConnectTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/IgniteClientConnectTest.java
index d20b3c4..2576a9a 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/IgniteClientConnectTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/IgniteClientConnectTest.java
@@ -83,7 +83,6 @@ public class IgniteClientConnectTest extends GridCommonAbstractTest {
 
             disco.setIpFinder(ipFinder);
 
-
             if (failureDetectionTimeout != -1)
                 cfg.setFailureDetectionTimeout(failureDetectionTimeout);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryNodeJoinAndFailureTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryNodeJoinAndFailureTest.java
index 2cccd0d..95e3f50 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryNodeJoinAndFailureTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryNodeJoinAndFailureTest.java
@@ -186,7 +186,6 @@ public class TcpDiscoveryNodeJoinAndFailureTest extends GridCommonAbstractTest {
                     }
                 }
 
-
                 if (msg instanceof TcpDiscoveryJoinRequestMessage) {
                     TcpDiscoveryJoinRequestMessage joinReq = (TcpDiscoveryJoinRequestMessage)msg;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryRestartTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryRestartTest.java
index efb35f3..7a2ce97 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryRestartTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoveryRestartTest.java
@@ -149,7 +149,6 @@ public class TcpDiscoveryRestartTest extends GridCommonAbstractTest {
         }
     }
 
-
     /**
      * @param msg Message.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySelfTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySelfTest.java
index 9b85db8..03fcdc1 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySelfTest.java
@@ -1518,12 +1518,10 @@ public class TcpDiscoverySelfTest extends GridCommonAbstractTest {
 
             Ignite ignite1 = startGrid("testNoRingMessageWorkerAbnormalFailureNormalNode");
 
-
             nodeSpi.set(new TcpDiscoverySpi());
 
             final Ignite ignite2 = startGrid("testNoRingMessageWorkerAbnormalFailureSegmentedNode");
 
-
             final AtomicBoolean disconnected = new AtomicBoolean();
 
             final AtomicBoolean segmented = new AtomicBoolean();
@@ -1561,24 +1559,20 @@ public class TcpDiscoverySelfTest extends GridCommonAbstractTest {
                 }
             }, EventType.EVT_NODE_SEGMENTED);
 
-
             spi1.stop = true;
 
             disLatch.await(15, TimeUnit.SECONDS);
 
             assertTrue(disconnected.get());
 
-
             spi1.stop = false;
 
             segLatch.await(15, TimeUnit.SECONDS);
 
             assertTrue(segmented.get());
 
-
             Thread.sleep(10_000);
 
-
             String result = strLog.toString();
 
             assert result.contains("Local node SEGMENTED") &&
@@ -1623,7 +1617,6 @@ public class TcpDiscoverySelfTest extends GridCommonAbstractTest {
         }
     }
 
-
     /**
      * @param twoNodes If {@code true} starts two nodes, otherwise three.
      * @throws Exception If failed
@@ -2488,7 +2481,6 @@ public class TcpDiscoverySelfTest extends GridCommonAbstractTest {
         }
     }
 
-
     /**
      *
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpiFailureTimeoutSelfTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpiFailureTimeoutSelfTest.java
index ec07974..8e4a895 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpiFailureTimeoutSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpiFailureTimeoutSelfTest.java
@@ -220,7 +220,6 @@ public class TcpDiscoverySpiFailureTimeoutSelfTest extends AbstractDiscoverySelf
         return (TestTcpDiscoverySpi)spis.get(0);
     }
 
-
     /**
      * Returns the second spi with failure detection timeout enabled.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslSecuredUnsecuredTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslSecuredUnsecuredTest.java
index 5225084..4c876d1 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslSecuredUnsecuredTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslSecuredUnsecuredTest.java
@@ -189,6 +189,4 @@ public class TcpDiscoverySslSecuredUnsecuredTest extends GridCommonAbstractTest
             return super.readMessage(sock, in, timeout);
         }
     }
-
-
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslTrustedUntrustedTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslTrustedUntrustedTest.java
index 6fbddbb..d0188da 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslTrustedUntrustedTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySslTrustedUntrustedTest.java
@@ -31,6 +31,7 @@ import org.junit.Test;
 public class TcpDiscoverySslTrustedUntrustedTest extends GridCommonAbstractTest {
     /** */
     private volatile String keyStore;
+
     /** */
     private volatile String trustStore;
 
@@ -120,7 +121,6 @@ public class TcpDiscoverySslTrustedUntrustedTest extends GridCommonAbstractTest
         checkDiscoveryFailure("node01", "trustboth", "node02old", "trusttwo");
     }
 
-
     /**
      * @param keysTrusts Pairs of key store, trust store.
      * @throws Exception If failed.
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/loadbalancing/adaptive/GridAdaptiveLoadBalancingSpiMultipleNodeSelfTest.java b/modules/core/src/test/java/org/apache/ignite/spi/loadbalancing/adaptive/GridAdaptiveLoadBalancingSpiMultipleNodeSelfTest.java
index 5696cac..537035c 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/loadbalancing/adaptive/GridAdaptiveLoadBalancingSpiMultipleNodeSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/loadbalancing/adaptive/GridAdaptiveLoadBalancingSpiMultipleNodeSelfTest.java
@@ -70,6 +70,7 @@ public class GridAdaptiveLoadBalancingSpiMultipleNodeSelfTest extends GridSpiAbs
             }
         };
     }
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/core/src/test/java/org/apache/ignite/testframework/GridTestUtils.java b/modules/core/src/test/java/org/apache/ignite/testframework/GridTestUtils.java
index 629f457..0873bfc 100644
--- a/modules/core/src/test/java/org/apache/ignite/testframework/GridTestUtils.java
+++ b/modules/core/src/test/java/org/apache/ignite/testframework/GridTestUtils.java
@@ -1589,7 +1589,6 @@ public final class GridTestUtils {
             cls = cls.getSuperclass();
         } while (cls != Object.class);
 
-
         throw new RuntimeException("Failed to find method" +
             " [obj=" + obj + ", mtd=" + mtd + ", params=" + Arrays.toString(params) + ']');
     }
@@ -1761,7 +1760,6 @@ public final class GridTestUtils {
         return factory;
     }
 
-
     /**
      * Creates test-purposed SSL context factory from test key store with disabled trust manager.
      *
@@ -2116,6 +2114,7 @@ public final class GridTestUtils {
     public static class SqlTestFunctions {
         /** Sleep milliseconds. */
         public static volatile long sleepMs;
+
         /** Fail flag. */
         public static volatile boolean fail;
 
diff --git a/modules/core/src/test/java/org/apache/ignite/testframework/MvccFeatureChecker.java b/modules/core/src/test/java/org/apache/ignite/testframework/MvccFeatureChecker.java
index 674c86a..1daeab4 100644
--- a/modules/core/src/test/java/org/apache/ignite/testframework/MvccFeatureChecker.java
+++ b/modules/core/src/test/java/org/apache/ignite/testframework/MvccFeatureChecker.java
@@ -111,7 +111,6 @@ public class MvccFeatureChecker {
                 iso == TransactionIsolation.REPEATABLE_READ;
     }
 
-
     /**
      * Check if Cache mode is supported.
      *
diff --git a/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridCommonAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridCommonAbstractTest.java
index b83661d..f2c6239 100755
--- a/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridCommonAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridCommonAbstractTest.java
@@ -2178,7 +2178,6 @@ public abstract class GridCommonAbstractTest extends GridAbstractTest {
                     ds.addData(map);
                 }
 
-
                 break;
         }
 
diff --git a/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridRollingRestartAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridRollingRestartAbstractTest.java
index 85b69ba..58b0f1640 100644
--- a/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridRollingRestartAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/testframework/junits/common/GridRollingRestartAbstractTest.java
@@ -125,7 +125,6 @@ public abstract class GridRollingRestartAbstractTest extends GridCommonAbstractT
         rollingRestartThread.shutdown();
     }
 
-
     /**
      * Thread that performs a "rolling restart" of a set of Ignite grid processes.
      * */
diff --git a/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteProcessProxy.java b/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteProcessProxy.java
index 8d8546d..90f6792 100644
--- a/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteProcessProxy.java
+++ b/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteProcessProxy.java
@@ -150,7 +150,6 @@ public class IgniteProcessProxy implements IgniteEx {
         this(cfg, log, locJvmGrid, discovery, Collections.emptyList());
     }
 
-
     /**
      * @param cfg Configuration.
      * @param log Logger.
diff --git a/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/TxWalStat.java b/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/TxWalStat.java
index a45b8ea..9f2dee2 100644
--- a/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/TxWalStat.java
+++ b/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/TxWalStat.java
@@ -63,6 +63,7 @@ public class TxWalStat {
      */
     private final LruMap<String> cacheIdsWeightedNodesInTx = new LruMap<>(POPULAR_COMBINATION_MAP_MAX_SIZE,
         USAGES_CNT_EVICT_PROHIBITED * 90);
+
     /**
      * Cache IDs combination involved in Tx, weighted using total nodes in Tx. Used to search popular combinations
      * mostly involved into highly distributive transactions.
@@ -243,6 +244,7 @@ public class TxWalStat {
     private static class TxOccurrence {
         /** Primary nodes count from TX record. */
         private int nodes;
+
         /** Primary + backup nodes count from TX record. */
         private int totalNodes;
 
@@ -284,6 +286,7 @@ public class TxWalStat {
          * anyway.
          */
         private int evictProhibited;
+
         /**
          * Evicted count. Number of entries removed during statistic accumulation. Zero value means all records were
          * processed, created top (popular combination search) is totally correct. Non zero means top may be not
diff --git a/modules/direct-io/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoLib.java b/modules/direct-io/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoLib.java
index 2ab4325..fb7c275 100644
--- a/modules/direct-io/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoLib.java
+++ b/modules/direct-io/src/main/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoLib.java
@@ -158,7 +158,6 @@ public class IgniteNativeIoLib {
         return false;
     }
 
-
     /**
      * Calculate Lowest Common Multiplier.
      * @param a first value.
diff --git a/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgniteNativeIoLocalWalModeChangeDuringRebalancingSelfTest.java b/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgniteNativeIoLocalWalModeChangeDuringRebalancingSelfTest.java
index f5c9947..400f329 100644
--- a/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgniteNativeIoLocalWalModeChangeDuringRebalancingSelfTest.java
+++ b/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgniteNativeIoLocalWalModeChangeDuringRebalancingSelfTest.java
@@ -32,7 +32,6 @@ public class IgniteNativeIoLocalWalModeChangeDuringRebalancingSelfTest extends L
     @Test
     @Override public void testWithExchangesMerge() throws Exception {
 
-
         super.testWithExchangesMerge();
     }
 }
diff --git a/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteFileIOTest.java b/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteFileIOTest.java
index a5e1703..1131b5b 100644
--- a/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteFileIOTest.java
+++ b/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteFileIOTest.java
@@ -37,6 +37,7 @@ public class IgniteFileIOTest {
     private static class TestFileIO extends AbstractFileIO {
         /** Data. */
         private final byte[] data;
+
         /** Position. */
         private int position;
 
diff --git a/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoWithNoPersistenceTest.java b/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoWithNoPersistenceTest.java
index c6b1411..0be0bdf 100644
--- a/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoWithNoPersistenceTest.java
+++ b/modules/direct-io/src/test/java/org/apache/ignite/internal/processors/cache/persistence/file/IgniteNativeIoWithNoPersistenceTest.java
@@ -64,7 +64,6 @@ public class IgniteNativeIoWithNoPersistenceTest extends GridCommonAbstractTest
         for (int i = 0; i < 100; i++)
             cache.put(i, valueForKey(i));
 
-
         stopAllGrids();
     }
 
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java
index 0590724..3c0f000 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/mapreduce/IgniteHadoopClientProtocolProvider.java
@@ -33,7 +33,6 @@ import org.apache.ignite.internal.processors.hadoop.impl.proto.HadoopClientProto
 import org.apache.ignite.internal.processors.hadoop.mapreduce.MapReduceClient;
 import org.apache.ignite.internal.util.typedef.F;
 
-
 /**
  * Ignite Hadoop client protocol provider.
  */
@@ -130,4 +129,4 @@ public class IgniteHadoopClientProtocolProvider extends ClientProtocolProvider {
                 cliMap.remove(clusterName, cli);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.java b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.java
index 2f4b24a..49784f1 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.java
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.java
@@ -87,7 +87,6 @@ public abstract class HadoopAbstractMapReducePlanner implements HadoopMapReduceP
         return new HadoopMapReducePlanTopology(new ArrayList<>(macsMap.values()), idToGrp, hostToGrp);
     }
 
-
     /**
      * Groups nodes by host names.
      *
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/util/BasicUserNameMapper.java b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/util/BasicUserNameMapper.java
index c34808a..77481a0 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/hadoop/util/BasicUserNameMapper.java
+++ b/modules/hadoop/src/main/java/org/apache/ignite/hadoop/util/BasicUserNameMapper.java
@@ -34,7 +34,7 @@ public class BasicUserNameMapper implements UserNameMapper {
     private Map<String, String> mappings;
 
     /** Whether to use default user name. */
-    private boolean useDfltUsrName;;
+    private boolean useDfltUsrName;
 
     /** Default user name. */
     private String dfltUsrName;
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopAttributes.java b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopAttributes.java
index 23eaa18..1ba4888 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopAttributes.java
+++ b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopAttributes.java
@@ -126,7 +126,6 @@ public class HadoopAttributes implements Externalizable {
         return maxTaskQueueSize;
     }
 
-
     /**
      * @return Native library names.
      */
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/shuffle/collections/HadoopHashMultimapBase.java b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/shuffle/collections/HadoopHashMultimapBase.java
index 8d9b3c3..5aa83de 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/shuffle/collections/HadoopHashMultimapBase.java
+++ b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/shuffle/collections/HadoopHashMultimapBase.java
@@ -90,6 +90,7 @@ public abstract class HadoopHashMultimapBase extends HadoopMultimapBase {
     protected long value(long meta) {
         return mem.readLong(meta + 16);
     }
+
     /**
      * @param meta Meta pointer.
      * @param val Value pointer.
@@ -208,4 +209,4 @@ public abstract class HadoopHashMultimapBase extends HadoopMultimapBase {
             valReader.close();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopEmbeddedTaskExecutor.java b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopEmbeddedTaskExecutor.java
index c030313..86c28a0 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopEmbeddedTaskExecutor.java
+++ b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopEmbeddedTaskExecutor.java
@@ -33,7 +33,6 @@ import org.apache.ignite.internal.processors.hadoop.jobtracker.HadoopJobTracker;
 import org.apache.ignite.internal.util.GridConcurrentHashSet;
 import org.apache.ignite.internal.util.typedef.internal.U;
 
-
 /**
  * Task executor.
  */
@@ -150,4 +149,4 @@ public class HadoopEmbeddedTaskExecutor extends HadoopTaskExecutorAdapter {
             assert executedTasks == null || executedTasks.isEmpty();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopExecutorService.java b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopExecutorService.java
index 2fbea68..ce76426 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopExecutorService.java
+++ b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/taskexecutor/HadoopExecutorService.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.hadoop.taskexecutor;
 
-
 import java.util.Collection;
 import java.util.concurrent.Callable;
 import java.util.concurrent.LinkedBlockingQueue;
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopAbstractSelfTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopAbstractSelfTest.java
index cc1a9e4..284824b 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopAbstractSelfTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopAbstractSelfTest.java
@@ -72,7 +72,6 @@ public abstract class HadoopAbstractSelfTest extends GridCommonAbstractTest {
         SECONDARY_REST_CFG.setPort(11500);
     }
 
-
     /** Initial classpath. */
     private static String initCp;
 
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopCommandLineTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopCommandLineTest.java
index 02b4b9b..c7cd99f 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopCommandLineTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopCommandLineTest.java
@@ -281,7 +281,6 @@ public class HadoopCommandLineTest extends GridCommonAbstractTest {
         return filteredJvmArgs.toString();
     }
 
-
     /**
      * Waits for process exit and prints the its output.
      *
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopFileSystemsTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopFileSystemsTest.java
index d2e8ddc..d177ee0 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopFileSystemsTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopFileSystemsTest.java
@@ -61,7 +61,6 @@ public class HadoopFileSystemsTest extends HadoopAbstractSelfTest {
         return 1;
     }
 
-
     /**
      * Test the file system with specified URI for the multi-thread working directory support.
      *
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopMapReduceErrorResilienceTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopMapReduceErrorResilienceTest.java
index bb001d8..fa7f569 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopMapReduceErrorResilienceTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopMapReduceErrorResilienceTest.java
@@ -68,6 +68,7 @@ public class HadoopMapReduceErrorResilienceTest extends HadoopAbstractMapReduceT
     public void testRecoveryAfterAnError7_Runtime() throws Exception {
         doTestRecoveryAfterAnError(7, HadoopErrorSimulator.Kind.Runtime);
     }
+
     /**
      * Tests recovery.
      *
@@ -77,6 +78,7 @@ public class HadoopMapReduceErrorResilienceTest extends HadoopAbstractMapReduceT
     public void testRecoveryAfterAnError7_IOException() throws Exception {
         doTestRecoveryAfterAnError(7, HadoopErrorSimulator.Kind.IOException);
     }
+
     /**
      * Tests recovery.
      *
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopSplitWrapperSelfTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopSplitWrapperSelfTest.java
index 3591158..1ffccee 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopSplitWrapperSelfTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopSplitWrapperSelfTest.java
@@ -69,6 +69,4 @@ public class HadoopSplitWrapperSelfTest extends HadoopAbstractSelfTest {
             }
         }, AssertionError.class, null);
     }
-
-
 }
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopUserLibsSelfTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopUserLibsSelfTest.java
index f7bf1d3..138fc18 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopUserLibsSelfTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopUserLibsSelfTest.java
@@ -185,6 +185,7 @@ public class HadoopUserLibsSelfTest extends GridCommonAbstractTest {
         assert res.contains(FILE_2_1);
         assert res.contains(FILE_2_2);
     }
+
     /**
      * Ensure provided file exists.
      *
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopWeightedMapReducePlannerTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopWeightedMapReducePlannerTest.java
index 16b8988..68d2d5fa 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopWeightedMapReducePlannerTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/HadoopWeightedMapReducePlannerTest.java
@@ -233,7 +233,6 @@ public class HadoopWeightedMapReducePlannerTest extends GridCommonAbstractTest {
             // mappers are assigned to all available nodes:
             assertEquals(nodes.size(), plan.mapperNodeIds().size());
 
-
             assertEquals(allIds(nodes), plan.mapperNodeIds());
         }
 
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/HadoopSecondaryFileSystemConfigurationTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/HadoopSecondaryFileSystemConfigurationTest.java
index b7ee789..718aa24 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/HadoopSecondaryFileSystemConfigurationTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/HadoopSecondaryFileSystemConfigurationTest.java
@@ -375,7 +375,6 @@ public class HadoopSecondaryFileSystemConfigurationTest extends IgfsCommonAbstra
         ccfg.setBackups(0);
         ccfg.setAtomicityMode(TRANSACTIONAL);
 
-
         return ccfg;
     }
 
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemAbstractSelfTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemAbstractSelfTest.java
index 73f8180..a359ed9 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemAbstractSelfTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemAbstractSelfTest.java
@@ -239,6 +239,7 @@ public abstract class IgniteHadoopFileSystemAbstractSelfTest extends IgfsCommonA
 
         Thread.sleep(500);
     }
+
     /**
      * Starts the nodes for this test.
      *
diff --git a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemHandshakeSelfTest.java b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemHandshakeSelfTest.java
index d224da4..42dc015 100644
--- a/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemHandshakeSelfTest.java
+++ b/modules/hadoop/src/test/java/org/apache/ignite/internal/processors/hadoop/impl/igfs/IgniteHadoopFileSystemHandshakeSelfTest.java
@@ -98,7 +98,6 @@ public class IgniteHadoopFileSystemHandshakeSelfTest extends IgfsCommonAbstractT
         checkValid(IGFS_NAME + "@127.0.0.1");
         checkValid(IGFS_NAME + "@127.0.0.1:" + DFLT_IPC_PORT);
 
-
         tcp = false; // Embedded mode:
 
         checkValid(IGFS_NAME + ":" + IGNITE_INSTANCE_NAME + "@");
@@ -127,7 +126,6 @@ public class IgniteHadoopFileSystemHandshakeSelfTest extends IgfsCommonAbstractT
         checkValid(IGFS_NAME + "@127.0.0.1");
         checkValid(IGFS_NAME + "@127.0.0.1:" + DFLT_IPC_PORT);
 
-
         tcp = false; // Embedded mode:
 
         checkValid(IGFS_NAME + ":" + IGNITE_INSTANCE_NAME + "@");
diff --git a/modules/hibernate-5.1/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java b/modules/hibernate-5.1/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java
index 67a0559..98a35d6 100644
--- a/modules/hibernate-5.1/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java
+++ b/modules/hibernate-5.1/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java
@@ -120,6 +120,7 @@ public class HibernateL2CacheConfigurationSelfTest extends GridCommonAbstractTes
 
         return cfg;
     }
+
     /**
      * @param igniteInstanceName Ignite instance name.
      * @return Hibernate configuration.
diff --git a/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java
index 54e489d..f85e16d 100644
--- a/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java
+++ b/modules/hibernate-5.3/src/test/java/org/apache/ignite/cache/hibernate/HibernateL2CacheConfigurationSelfTest.java
@@ -130,6 +130,7 @@ public class HibernateL2CacheConfigurationSelfTest extends GridCommonAbstractTes
 
         return cfg;
     }
+
     /**
      * @param igniteInstanceName Ignite instance name.
      * @return Hibernate configuration.
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheTwoStepQuery.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheTwoStepQuery.java
index c80484a..6483985 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheTwoStepQuery.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/cache/query/GridCacheTwoStepQuery.java
@@ -224,7 +224,6 @@ public class GridCacheTwoStepQuery {
         return mvccEnabled;
     }
 
-
     /**
      * @return Number of parameters
      */
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/H2TableDescriptor.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/H2TableDescriptor.java
index 6cb9ea6..d031445 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/H2TableDescriptor.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/H2TableDescriptor.java
@@ -110,6 +110,7 @@ public class H2TableDescriptor {
     public boolean sql(){
         return isSql;
     }
+
     /**
      * @return Indexing.
      */
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParser.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParser.java
index 33971ef..5ede3e4 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParser.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/QueryParser.java
@@ -649,7 +649,6 @@ public class QueryParser {
             streamTbl = DmlAstUtils.gridTableForElement(insert.into()).dataTable();
         }
 
-
         // Create update plan.
         UpdatePlan plan;
 
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/affinity/PartitionExtractor.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/affinity/PartitionExtractor.java
index 135116a..18f857f 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/affinity/PartitionExtractor.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/affinity/PartitionExtractor.java
@@ -174,7 +174,6 @@ public class PartitionExtractor {
             else
                 tree = new PartitionCompositeNode(tree, qryRes.tree(), PartitionCompositeNodeOperator.OR);
 
-
             if (affinityTopVer == null)
                 affinityTopVer = qryRes.topologyVersion();
             else
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/AbstractH2ExtrasInnerIO.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/AbstractH2ExtrasInnerIO.java
index 90b18dd..4b2e018 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/AbstractH2ExtrasInnerIO.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/database/io/AbstractH2ExtrasInnerIO.java
@@ -106,7 +106,6 @@ public abstract class AbstractH2ExtrasInnerIO extends BPlusInnerIO<H2Row> implem
 
         assert inlineIdxs != null : "no inline index helpers";
 
-
         int fieldOff = 0;
 
         for (int i = 0; i < inlineIdxs.size(); i++) {
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/DmlAstUtils.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/DmlAstUtils.java
index c90d149..0c20e46 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/DmlAstUtils.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/DmlAstUtils.java
@@ -311,7 +311,6 @@ public final class DmlAstUtils {
         return isEqualityCondition(op, false);
     }
 
-
     /**
      * Generate SQL SELECT based on UPDATE's WHERE, LIMIT, etc.
      *
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/UpdatePlanBuilder.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/UpdatePlanBuilder.java
index 8084743..bd760c2 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/UpdatePlanBuilder.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/dml/UpdatePlanBuilder.java
@@ -781,7 +781,6 @@ public final class UpdatePlanBuilder {
         return false;
     }
 
-
     /**
      * Checks that DML query (insert, merge, update, bulk load aka copy) columns: <br/>
      * 1) doesn't contain both entire key (_key or alias) and columns referring to part of the key; <br/>
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2ProxySpatialIndex.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2ProxySpatialIndex.java
index 9977128..1e7b163 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2ProxySpatialIndex.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2ProxySpatialIndex.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.internal.processors.query.h2.opt;
 
-
 import org.h2.engine.Session;
 import org.h2.index.Cursor;
 import org.h2.index.Index;
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2RowDescriptor.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2RowDescriptor.java
index d097ec5..0cfc952 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2RowDescriptor.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2RowDescriptor.java
@@ -151,7 +151,6 @@ public class GridH2RowDescriptor {
         return type;
     }
 
-
     /**
      * Gets cache context info for this row descriptor.
      *
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridLuceneInputStream.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridLuceneInputStream.java
index 9b1bf0c..7596d2d 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridLuceneInputStream.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridLuceneInputStream.java
@@ -58,6 +58,7 @@ public class GridLuceneInputStream extends IndexInput implements Cloneable {
 
     /** */
     private boolean isClone;
+
     /**
      * Constructor.
      *
@@ -276,4 +277,4 @@ public class GridLuceneInputStream extends IndexInput implements Cloneable {
             return super.slice(sliceDescription, offset + ofs, len);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQueryParser.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQueryParser.java
index 4ec45e0..0717198 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQueryParser.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQueryParser.java
@@ -652,7 +652,6 @@ public class GridSqlQueryParser {
         return res;
     }
 
-
     /**
      * @param tbl Table.
      */
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQuerySplitter.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQuerySplitter.java
index 00ce647..7b432da 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQuerySplitter.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlQuerySplitter.java
@@ -814,7 +814,6 @@ public class GridSqlQuerySplitter {
             //  T0   T1  T2  T3
             //  ^-----^
 
-
             //     join3
             //      / \
             //   join2 \
@@ -843,7 +842,6 @@ public class GridSqlQuerySplitter {
             //  T0   T1  T2  T3
             //       ^----^
 
-
             //        join3
             //         / \
             //      join1 \
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlStatement.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlStatement.java
index f3acfb9..95db922 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlStatement.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlStatement.java
@@ -23,6 +23,7 @@ package org.apache.ignite.internal.processors.query.h2.sql;
 public abstract class GridSqlStatement {
     /** */
     protected GridSqlAst limit;
+
     /** */
     private boolean explain;
 
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlSubquery.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlSubquery.java
index f073e7d..8dbf06c 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlSubquery.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlSubquery.java
@@ -19,7 +19,6 @@ package org.apache.ignite.internal.processors.query.h2.sql;
 
 import java.util.ArrayList;
 
-
 /**
  * Subquery expression.
  */
@@ -44,4 +43,4 @@ public class GridSqlSubquery extends GridSqlElement {
     public <X extends GridSqlQuery> X subquery() {
         return child(0);
     }
-}
\ No newline at end of file
+}
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlUpdate.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlUpdate.java
index 1623d3e..5393e4a 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlUpdate.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sql/GridSqlUpdate.java
@@ -58,7 +58,6 @@ public class GridSqlUpdate extends GridSqlStatement {
         return cols;
     }
 
-
     /** */
     public GridSqlUpdate set(LinkedHashMap<String, GridSqlElement> set) {
         this.set = set;
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/msg/GridH2SelectForUpdateTxDetails.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/msg/GridH2SelectForUpdateTxDetails.java
index a13a9c1..bff58a5 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/msg/GridH2SelectForUpdateTxDetails.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/twostep/msg/GridH2SelectForUpdateTxDetails.java
@@ -31,6 +31,7 @@ import org.apache.ignite.plugin.extensions.communication.MessageWriter;
 public class GridH2SelectForUpdateTxDetails implements Message {
     /** */
     private static final long serialVersionUID = 8166491041528984454L;
+
     /** */
     private long threadId;
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/BinaryTypeRegistrationTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/BinaryTypeRegistrationTest.java
index b49f395..92b4762 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/BinaryTypeRegistrationTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/BinaryTypeRegistrationTest.java
@@ -152,10 +152,13 @@ public class BinaryTypeRegistrationTest extends GridCommonAbstractTest {
     static class TypeRegistrator implements Runnable {
         /** */
         static final String DEFAULT_BINARY_FIELD_NAME = "intField";
+
         /** */
         private Ignite ignite;
+
         /** Barrier for synchronous start of all threads. */
         private CyclicBarrier cyclicBarrier;
+
         /** Binary field name for new binary object. */
         private String binaryFieldName;
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/CacheIndexStreamerTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/CacheIndexStreamerTest.java
index dc368dd..093e267 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/CacheIndexStreamerTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/CacheIndexStreamerTest.java
@@ -133,6 +133,4 @@ public class CacheIndexStreamerTest extends GridCommonAbstractTest {
 
         return ccfg;
     }
-
-
 }
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheQueryIndexDisabledSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheQueryIndexDisabledSelfTest.java
index f0e9805..6f2bf10 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheQueryIndexDisabledSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheQueryIndexDisabledSelfTest.java
@@ -144,6 +144,7 @@ public class GridCacheQueryIndexDisabledSelfTest extends GridCommonAbstractTest
             assertTrue("Scan query should work with disable query indexing.", false);
         }
     }
+
     /**
      * @throws Exception If failed.
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractFieldsQuerySelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractFieldsQuerySelfTest.java
index 70fd084..d44df57 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractFieldsQuerySelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractFieldsQuerySelfTest.java
@@ -393,7 +393,6 @@ public abstract class IgniteCacheAbstractFieldsQuerySelfTest extends GridCommonA
                 .setSchema("cacheWithPrecision")
                 .setArgs(2, "DEF"), true);
 
-
         QueryCursorImpl<List<?>> cursor = (QueryCursorImpl<List<?>>)qryProc.querySqlFields(
             new SqlFieldsQuery("SELECT _KEY, strField FROM TestType")
                 .setSchema("cacheWithPrecision"), true);
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractQuerySelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractQuerySelfTest.java
index 59bcc0f..16be03d 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractQuerySelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractQuerySelfTest.java
@@ -818,7 +818,6 @@ public abstract class IgniteCacheAbstractQuerySelfTest extends GridCommonAbstrac
         for (long i = 0; i < 50; i++)
             cache.put(i, new EnumObject(i, i % 2 == 0 ? EnumType.TYPE_A : EnumType.TYPE_B));
 
-
         assertEnumQry("type = ?", EnumType.TYPE_A, EnumType.TYPE_A, cache, 25);
         assertEnumQry("type > ?", EnumType.TYPE_A, EnumType.TYPE_B, cache, 25);
         assertEnumQry("type < ?", EnumType.TYPE_B, EnumType.TYPE_A, cache, 25);
@@ -978,7 +977,6 @@ public abstract class IgniteCacheAbstractQuerySelfTest extends GridCommonAbstrac
             }
         }
 
-
         QueryCursor<Cache.Entry<Integer, ObjectValue>> qry =
             cache.query(new SqlQuery<Integer, ObjectValue>(ObjectValue.class, "intVal >= ? order by intVal").
                 setArgs(0));
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigurationPrimitiveTypesSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigurationPrimitiveTypesSelfTest.java
index b8591b5..69599dd 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigurationPrimitiveTypesSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheConfigurationPrimitiveTypesSelfTest.java
@@ -68,7 +68,6 @@ public class IgniteCacheConfigurationPrimitiveTypesSelfTest extends GridCommonAb
         boolean bool = true;
         cacheBoolean.put(bool, bool);
 
-
         assertEquals(cacheByte.query(new SqlQuery<>(Byte.class, "1 = 1")).getAll().size(), 1);
         assertEquals(cacheShort.query(new SqlQuery<>(Short.class, "1 = 1")).getAll().size(), 1);
         assertEquals(cacheInt.query(new SqlQuery<>(Integer.class, "1 = 1")).getAll().size(), 1);
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCollocatedAndNotTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCollocatedAndNotTest.java
index 47f2202..59b9ab4 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCollocatedAndNotTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCollocatedAndNotTest.java
@@ -241,6 +241,7 @@ public class IgniteCacheDistributedJoinCollocatedAndNotTest extends GridCommonAb
 
         assertEquals(expSize, res.size());
     }
+
     /**
      *
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCustomAffinityMapper.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCustomAffinityMapper.java
index ada57b2..52adbaa 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCustomAffinityMapper.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheDistributedJoinCustomAffinityMapper.java
@@ -218,6 +218,7 @@ public class IgniteCacheDistributedJoinCustomAffinityMapper extends GridCommonAb
             // No-op.
         }
     }
+
     /**
      *
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsSqlTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsSqlTest.java
index 721d49a..2b27469 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsSqlTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheGroupsSqlTest.java
@@ -182,7 +182,6 @@ public class IgniteCacheGroupsSqlTest extends GridCommonAbstractTest {
                 if (i % accsPerPerson == 0)
                     pers.put(pKey, new Person("pers-" + pKey));
 
-
                 acc.put(new AffinityKey(i, pKey), new Account(pKey, "acc-" + i));
             }
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInsertSqlQuerySelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInsertSqlQuerySelfTest.java
index 482616f..c0dba13 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInsertSqlQuerySelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInsertSqlQuerySelfTest.java
@@ -232,7 +232,6 @@ public class IgniteCacheInsertSqlQuerySelfTest extends IgniteCacheAbstractInsert
             // With random inner field
             rootVal.innerTypeCol = new AllTypes.InnerType(42L);
 
-
             p.query(new SqlFieldsQuery(
                 "INSERT INTO AllTypes(_key,_val) VALUES (?, ?)").setArgs(ROOT_KEY, rootVal)
             ).getAll();
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheJoinQueryWithAffinityKeyTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheJoinQueryWithAffinityKeyTest.java
index fae6395..65ee707 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheJoinQueryWithAffinityKeyTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheJoinQueryWithAffinityKeyTest.java
@@ -296,7 +296,6 @@ public class IgniteCacheJoinQueryWithAffinityKeyTest extends GridCommonAbstractT
 
         SqlFieldsQuery[] qrys = new SqlFieldsQuery[2];
 
-
         if (escape) {
             qrys[0] = new SqlFieldsQuery("select count(*) " +
                 "from \"Person\" p, \"" + (affKey ? "AccountKeyWithAffinity" : "Account") + "\" a " +
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAbstractTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAbstractTest.java
index 300f0fe..525f16a 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAbstractTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAbstractTest.java
@@ -319,7 +319,6 @@ public class IgniteCacheLockPartitionOnAffinityRunAbstractTest extends GridCache
         }
     }
 
-
     /**
      * Test class Organization.
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAtomicCacheOpTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAtomicCacheOpTest.java
index 9890236..5361c12 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAtomicCacheOpTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunAtomicCacheOpTest.java
@@ -42,14 +42,19 @@ import org.junit.Test;
 public class IgniteCacheLockPartitionOnAffinityRunAtomicCacheOpTest extends IgniteCacheLockPartitionOnAffinityRunAbstractTest {
     /** Atomic cache. */
     private static final String ATOMIC_CACHE = "atomic";
+
     /** Transact cache. */
     private static final String TRANSACT_CACHE = "transact";
+
     /** Transact cache. */
     private static final long TEST_TIMEOUT = 10 * 60_000;
+
     /** Keys count. */
     private static int KEYS_CNT = 100;
+
     /** Keys count. */
     private static int PARTS_CNT = 16;
+
     /** Key. */
     private static AtomicInteger key = new AtomicInteger(0);
 
@@ -255,7 +260,6 @@ public class IgniteCacheLockPartitionOnAffinityRunAtomicCacheOpTest extends Igni
         }
     }
 
-
     /**
      *
      * @param e Exception to check.
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunTest.java
index 6506ff6..23fe4ba 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheLockPartitionOnAffinityRunTest.java
@@ -663,7 +663,6 @@ public class IgniteCacheLockPartitionOnAffinityRunTest extends IgniteCacheLockPa
             awaitPartitionMapExchange();
         }
 
-
         try {
             grid(1).compute().affinityCallAsync(
                 Arrays.asList(Organization.class.getSimpleName(), Person.class.getSimpleName()),
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheUpdateSqlQuerySelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheUpdateSqlQuerySelfTest.java
index d17ca0b..a48b37c 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheUpdateSqlQuerySelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheUpdateSqlQuerySelfTest.java
@@ -397,7 +397,6 @@ public class IgniteCacheUpdateSqlQuerySelfTest extends IgniteCacheAbstractSqlDml
         return ignite(0).cache("L2AT").query(qry.setSchema("PUBLIC")).getAll();
     }
 
-
     /**
      *
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicSqlRestoreTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicSqlRestoreTest.java
index 1a803e1..8163a76 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicSqlRestoreTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicSqlRestoreTest.java
@@ -59,6 +59,7 @@ import static org.hamcrest.MatcherAssert.assertThat;
 public class IgniteDynamicSqlRestoreTest extends GridCommonAbstractTest implements Serializable {
 
     public static final String TEST_CACHE_NAME = "test";
+
     public static final String TEST_INDEX_OBJECT = "TestIndexObject";
 
     /** {@inheritDoc} */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/SqlFieldsQuerySelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/SqlFieldsQuerySelfTest.java
index 3617f28..ecf39a5 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/SqlFieldsQuerySelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/SqlFieldsQuerySelfTest.java
@@ -85,7 +85,6 @@ public class SqlFieldsQuerySelfTest extends GridCommonAbstractTest {
         assertEquals("AGE", qryCursor.getFieldName(1));
     }
 
-
     /**
      *
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/IgniteSqlQueryWithBaselineTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/IgniteSqlQueryWithBaselineTest.java
index 5f929b0..565b3ff 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/IgniteSqlQueryWithBaselineTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/IgniteSqlQueryWithBaselineTest.java
@@ -16,7 +16,6 @@
  */
 package org.apache.ignite.internal.processors.cache.distributed.near;
 
-
 import java.io.Serializable;
 import java.util.Collection;
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexPrimaryKeyUnwrapSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexPrimaryKeyUnwrapSelfTest.java
index 9e9cb40..b12d905 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexPrimaryKeyUnwrapSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexPrimaryKeyUnwrapSelfTest.java
@@ -318,12 +318,15 @@ public class ComplexPrimaryKeyUnwrapSelfTest extends AbstractIndexingCommonTest
         /** */
         @QuerySqlField()
         private String name;
+
         /** */
         @QuerySqlField()
         private String company;
+
         /** */
         @QuerySqlField()
         private String city;
+
         /** */
         @QuerySqlField()
         private int age;
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexSecondaryKeyUnwrapSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexSecondaryKeyUnwrapSelfTest.java
index e399512..308cfdc 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexSecondaryKeyUnwrapSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/ComplexSecondaryKeyUnwrapSelfTest.java
@@ -216,12 +216,15 @@ public class ComplexSecondaryKeyUnwrapSelfTest extends AbstractIndexingCommonTes
         /** */
         @QuerySqlField()
         private String name;
+
         /** */
         @QuerySqlField()
         private String company;
+
         /** */
         @QuerySqlField()
         private String city;
+
         /** */
         @QuerySqlField()
         private int age;
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2RowExpireTimeIndexSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2RowExpireTimeIndexSelfTest.java
index ba9899a..3f759b1 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2RowExpireTimeIndexSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2RowExpireTimeIndexSelfTest.java
@@ -186,7 +186,6 @@ public class H2RowExpireTimeIndexSelfTest extends GridCommonAbstractTest {
             assertEqualsCollections(asList(asList(3, 4), asList(5, 6)), mixed);
         }
 
-
         {
             List<List<?>> expired = cache.query(new SqlFieldsQuery("SELECT * FROM \"notEager\".Integer WHERE id >= 42")).getAll();
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/LongIndexNameTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/LongIndexNameTest.java
index 0649a56..78e9cbc 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/LongIndexNameTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/LongIndexNameTest.java
@@ -95,8 +95,6 @@ public class LongIndexNameTest extends AbstractIndexingCommonTest {
 
             assertEquals(cursor1.getAll().size(), cursor1Idx.getAll().size());
             assertEquals(cursor2.getAll().size(), cursor2Idx.getAll().size());
-
-
         }
         finally {
             stopAllGrids();
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/OptimizedMarshallerIndexNameTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/OptimizedMarshallerIndexNameTest.java
index 45778f3..f0c04d9 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/OptimizedMarshallerIndexNameTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/OptimizedMarshallerIndexNameTest.java
@@ -52,6 +52,7 @@ import static org.apache.ignite.cache.CacheWriteSynchronizationMode.FULL_SYNC;
 public class OptimizedMarshallerIndexNameTest extends AbstractIndexingCommonTest {
     /** Test name 1 */
     private static final String TEST_NAME1 = "Name1";
+
     /** Test name 2 */
     private static final String TEST_NAME2 = "Name2";
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/StaticCacheDdlTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/StaticCacheDdlTest.java
index dfdf10f..f412abe 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/StaticCacheDdlTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/StaticCacheDdlTest.java
@@ -385,7 +385,6 @@ public class StaticCacheDdlTest extends GridCommonAbstractTest {
         fields.put("field_to_drop", String.class.getName());
         fields.put("some_field", String.class.getName());
 
-
         QueryEntity qryEntity = new QueryEntity()
             .setTableName(TABLE_NAME)
             .setKeyType("CUSTOM_SQL_KEY_TYPE") // Replace by Integer to reproduce "Key is missing from query"
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccBackupsAbstractTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccBackupsAbstractTest.java
index fb4e3c2..dd092b7 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccBackupsAbstractTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccBackupsAbstractTest.java
@@ -246,7 +246,6 @@ public abstract class CacheMvccBackupsAbstractTest extends CacheMvccAbstractTest
             tx.commit();
         }
 
-
         qryStr = "DELETE FROM Integer WHERE _key >= " + KEYS_CNT / 2;
 
         try (Transaction tx = client.transactions().txStart(PESSIMISTIC, REPEATABLE_READ)) {
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccSqlLockTimeoutTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccSqlLockTimeoutTest.java
index 89bd09f..63bfed1 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccSqlLockTimeoutTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/CacheMvccSqlLockTimeoutTest.java
@@ -187,6 +187,7 @@ public class CacheMvccSqlLockTimeoutTest extends CacheMvccAbstractTest {
     private static class TimeoutChecker {
         /** */
         final IgniteEx ignite;
+
         /** */
         final String cacheName;
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccRepeatableReadBulkOpsTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccRepeatableReadBulkOpsTest.java
index 193f28a..0e4638b 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccRepeatableReadBulkOpsTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/mvcc/MvccRepeatableReadBulkOpsTest.java
@@ -402,11 +402,10 @@ public class MvccRepeatableReadBulkOpsTest extends CacheMvccAbstractTest {
 
         TestCache<Integer, MvccTestAccount> cache = new TestCache<>(node.cache(DEFAULT_CACHE_NAME));
 
+        final Set<Integer> keysForUpdate = new HashSet<>(3);
+        final Set<Integer> keysForRemove = new HashSet<>(3);
 
-            final Set<Integer> keysForUpdate = new HashSet<>(3);
-            final Set<Integer> keysForRemove = new HashSet<>(3);
-
-            final Set<Integer> allKeys = generateKeySet(grid(0).cache(DEFAULT_CACHE_NAME), keysForUpdate, keysForRemove);
+        final Set<Integer> allKeys = generateKeySet(grid(0).cache(DEFAULT_CACHE_NAME), keysForUpdate, keysForRemove);
 
         try {
             int updCnt = 1;
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/IgnitePersistentStoreQueryWithMultipleClassesPerCacheTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/IgnitePersistentStoreQueryWithMultipleClassesPerCacheTest.java
index 0874a4e..b79701d 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/IgnitePersistentStoreQueryWithMultipleClassesPerCacheTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/IgnitePersistentStoreQueryWithMultipleClassesPerCacheTest.java
@@ -148,7 +148,6 @@ public class IgnitePersistentStoreQueryWithMultipleClassesPerCacheTest extends G
         }
     }
 
-
     /**
      *
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/baseline/IgniteChangingBaselineCacheQueryNodeRestartSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/baseline/IgniteChangingBaselineCacheQueryNodeRestartSelfTest.java
index 5345adb..408c489 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/baseline/IgniteChangingBaselineCacheQueryNodeRestartSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/database/baseline/IgniteChangingBaselineCacheQueryNodeRestartSelfTest.java
@@ -16,7 +16,6 @@
  */
 package org.apache.ignite.internal.processors.database.baseline;
 
-
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.concurrent.Callable;
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/AbstractQueryTableLockAndConnectionPoolSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/AbstractQueryTableLockAndConnectionPoolSelfTest.java
index 36bdae3..485fb11 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/AbstractQueryTableLockAndConnectionPoolSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/AbstractQueryTableLockAndConnectionPoolSelfTest.java
@@ -352,7 +352,6 @@ public abstract class AbstractQueryTableLockAndConnectionPoolSelfTest extends Ab
             }
         }, qryThreads, "usr-qry");
 
-
         long tEnd = U.currentTimeMillis() + TEST_DUR;
 
         while (U.currentTimeMillis() < tEnd) {
@@ -507,7 +506,6 @@ public abstract class AbstractQueryTableLockAndConnectionPoolSelfTest extends Ab
             assertBaseQueryResults(rows);
         }
 
-
         // Test full iteration.
         {
             List<List<?>> rows = new ArrayList<>();
@@ -530,7 +528,6 @@ public abstract class AbstractQueryTableLockAndConnectionPoolSelfTest extends Ab
                 iter.next();
         }
 
-
         // Test execution of multiple queries at a time.
         List<Iterator<List<?>>> iters = new ArrayList<>();
 
@@ -758,7 +755,6 @@ public abstract class AbstractQueryTableLockAndConnectionPoolSelfTest extends Ab
         return ((IgniteEx)node).context().query().querySqlFields(qry.setLazy(lazy()), false);
     }
 
-
     /**
      * @return Lazy mode.
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteCachelessQueriesSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteCachelessQueriesSelfTest.java
index c8ba516..6cc3d79 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteCachelessQueriesSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteCachelessQueriesSelfTest.java
@@ -351,7 +351,6 @@ public class IgniteCachelessQueriesSelfTest extends GridCommonAbstractTest {
         assertTrue(q.isLocal());
     }
 
-
     /**
      * Check that no distributed query has happened.
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSegmentedIndexSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSegmentedIndexSelfTest.java
index ab38838..0b818c8 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSegmentedIndexSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSegmentedIndexSelfTest.java
@@ -356,7 +356,6 @@ public class IgniteSqlSegmentedIndexSelfTest extends AbstractIndexingCommonTest
         @QuerySqlField
         String name;
 
-
         /**
          * @param name Name.
          */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSkipReducerOnUpdateDmlSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSkipReducerOnUpdateDmlSelfTest.java
index 1752e0b..72a7d92 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSkipReducerOnUpdateDmlSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSkipReducerOnUpdateDmlSelfTest.java
@@ -622,6 +622,7 @@ public class IgniteSqlSkipReducerOnUpdateDmlSelfTest extends AbstractIndexingCom
         /** */
         @QuerySqlField
         int amount;
+
         /** */
         @QuerySqlField
         Date updated;
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSplitterSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSplitterSelfTest.java
index 73964a4..0922b08 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSplitterSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlSplitterSelfTest.java
@@ -304,7 +304,6 @@ public class IgniteSqlSplitterSelfTest extends AbstractIndexingCommonTest {
                         }
                     }
 
-
                     X.println(" ---> ik: : " + i + " " + k);
                     X.println("\nqry: \n" + qry.toString());
 
@@ -2150,7 +2149,6 @@ public class IgniteSqlSplitterSelfTest extends AbstractIndexingCommonTest {
             assertEquals("min", 3, ((Integer)row.get(5)).intValue());
             assertEquals("max", 3, ((Integer)row.get(6)).intValue());
 
-
             row = result.get(1);
             assertEquals("fst", 2, ((Number)row.get(0)).intValue());
             assertEquals("count", 3L, ((Number)row.get(1)).longValue());
@@ -2160,7 +2158,6 @@ public class IgniteSqlSplitterSelfTest extends AbstractIndexingCommonTest {
             assertEquals("min", 1, ((Integer)row.get(5)).intValue());
             assertEquals("max", 3, ((Integer)row.get(6)).intValue());
 
-
             row = result.get(2);
             assertEquals("fst", 3, ((Number)row.get(0)).intValue());
             assertEquals("count", 6L, ((Number)row.get(1)).longValue());
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/SqlSystemViewsSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/SqlSystemViewsSelfTest.java
index a9e742c..711b068 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/SqlSystemViewsSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/SqlSystemViewsSelfTest.java
@@ -293,7 +293,6 @@ public class SqlSystemViewsSelfTest extends AbstractIndexingCommonTest {
         }
     }
 
-
     /**
      * @return Default cache configuration.
      */
@@ -486,7 +485,6 @@ public class SqlSystemViewsSelfTest extends AbstractIndexingCommonTest {
 
         assertNotEquals(id0, id1);
 
-
         String qryPrefix = ignite.localNode().id() + "_";
 
         String qryId1 = qryPrefix + "1";
@@ -1054,8 +1052,6 @@ public class SqlSystemViewsSelfTest extends AbstractIndexingCommonTest {
         assertTrue("All tables should be dropped", execSql(selectTabNameCacheName).isEmpty());
     }
 
-
-
     /**
      * Dummy implementation of the mapper. Required to test "AFFINITY_KEY_COLUMN".
      */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/GridIndexFullRebuildTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/GridIndexFullRebuildTest.java
index 02fca0f..9f4b558 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/GridIndexFullRebuildTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/GridIndexFullRebuildTest.java
@@ -59,6 +59,7 @@ import static org.apache.ignite.internal.processors.cache.persistence.file.FileP
  */
 public class GridIndexFullRebuildTest extends GridCommonAbstractTest {
     public static final String FIRST_CACHE = "cache1";
+
     public static final String SECOND_CACHE = "cache2";
 
     /** {@inheritDoc} */
@@ -254,10 +255,13 @@ public class GridIndexFullRebuildTest extends GridCommonAbstractTest {
     public class Account {
         /** */
         private Long id;
+
         /** */
         private String name;
+
         /** */
         private Long amount;
+
         /** */
         private Date updateDate;
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/QueryDataPageScanTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/QueryDataPageScanTest.java
index 3b7a8d7..1c5a88c 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/QueryDataPageScanTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/QueryDataPageScanTest.java
@@ -578,6 +578,7 @@ public class QueryDataPageScanTest extends GridCommonAbstractTest {
      */
     static class Person implements Externalizable {
         String name;
+
         int age;
 
         public Person() {
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java
index a8e65f0..644199c 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java
@@ -755,7 +755,6 @@ public class BaseH2CompareQueryTest extends AbstractH2CompareQueryTest {
         @QuerySqlField(index = true)
         public int old = 17;
 
-
         /**
          * Constructs person record.
          *
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/twostep/DisappearedCacheWasNotFoundMessageSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/twostep/DisappearedCacheWasNotFoundMessageSelfTest.java
index d5a3ef4..c81ee5c 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/twostep/DisappearedCacheWasNotFoundMessageSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/twostep/DisappearedCacheWasNotFoundMessageSelfTest.java
@@ -46,10 +46,13 @@ import static org.apache.ignite.internal.processors.query.h2.twostep.JoinSqlTest
 public class DisappearedCacheWasNotFoundMessageSelfTest extends AbstractIndexingCommonTest {
     /** */
     private static final int NODES_COUNT = 2;
+
     /** */
     private static final String ORG = "org";
+
     /** */
     private IgniteCache<String, JoinSqlTestHelper.Person> personCache;
+
     /** */
     private IgniteCache<String, JoinSqlTestHelper.Organization> orgCache;
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/oom/AbstractQueryOOMTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/oom/AbstractQueryOOMTest.java
index d29aaaa..d3abff4 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/oom/AbstractQueryOOMTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/oom/AbstractQueryOOMTest.java
@@ -284,7 +284,6 @@ public abstract class AbstractQueryOOMTest extends GridCommonAbstractTest {
         checkQueryExpectOOM("SELECT id, sum(val) from test GROUP BY id", false, true);
     }
 
-
     /**
      * @param sql Query.
      * @param lazy Lazy mode.
diff --git a/modules/indexing/src/test/java/org/apache/ignite/sqltests/BaseSqlTest.java b/modules/indexing/src/test/java/org/apache/ignite/sqltests/BaseSqlTest.java
index b1a8240..0a7ab8d 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/sqltests/BaseSqlTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/sqltests/BaseSqlTest.java
@@ -106,10 +106,12 @@ public class BaseSqlTest extends AbstractIndexingCommonTest {
     /** Node name of first server. */
     public final String SRV1_NAME = "server1";
 
+    /** */
     public static final String[] ALL_EMP_FIELDS = new String[] {"ID", "DEPID", "DEPIDNOIDX", "FIRSTNAME", "LASTNAME", "AGE", "SALARY"};
 
     /** Flag that forces to do explain query in log before performing actual query. */
     public static boolean explain = false;
+
     /** Department table name. */
     protected String DEP_TAB = "Department";
 
@@ -278,9 +280,9 @@ public class BaseSqlTest extends AbstractIndexingCommonTest {
      * Result of sql query. Contains metadata and all values in memory.
      */
     static class Result {
-
         /** Names of columns. */
         private List<String> colNames;
+
         /** Table */
         private List<List<?>> vals;
 
diff --git a/modules/jms11/src/main/java/org/apache/ignite/stream/jms11/JmsStreamer.java b/modules/jms11/src/main/java/org/apache/ignite/stream/jms11/JmsStreamer.java
index 55441d7..00ee1de 100644
--- a/modules/jms11/src/main/java/org/apache/ignite/stream/jms11/JmsStreamer.java
+++ b/modules/jms11/src/main/java/org/apache/ignite/stream/jms11/JmsStreamer.java
@@ -275,7 +275,6 @@ public class JmsStreamer<T extends Message, K, V> extends StreamAdapter<T, K, V>
         if (stopped)
             throw new IgniteException("Attempted to stop an already stopped JMS Streamer");
 
-
         try {
             stopped = true;
 
@@ -493,7 +492,9 @@ public class JmsStreamer<T extends Message, K, V> extends StreamAdapter<T, K, V>
     private class IgniteJmsMessageListener implements MessageListener {
 
         private Session session;
+
         private AtomicInteger counter = new AtomicInteger(0);
+
         private Executor executor;
 
         public IgniteJmsMessageListener(Session session, boolean createThreadPool) {
diff --git a/modules/jms11/src/test/java/org/apache/ignite/stream/jms11/TestTransformers.java b/modules/jms11/src/test/java/org/apache/ignite/stream/jms11/TestTransformers.java
index 91c39a7..3d7e25b 100644
--- a/modules/jms11/src/test/java/org/apache/ignite/stream/jms11/TestTransformers.java
+++ b/modules/jms11/src/test/java/org/apache/ignite/stream/jms11/TestTransformers.java
@@ -108,6 +108,7 @@ public class TestTransformers {
         private static final long serialVersionUID = -7332027566186690945L;
 
         private String key;
+
         private String value;
 
         public TestObject(String key, String value) {
@@ -125,4 +126,4 @@ public class TestTransformers {
 
     }
 
-}
\ No newline at end of file
+}
diff --git a/modules/jta/src/main/java/org/apache/ignite/cache/jta/websphere/WebSphereTmFactory.java b/modules/jta/src/main/java/org/apache/ignite/cache/jta/websphere/WebSphereTmFactory.java
index cf398e2..85886df 100644
--- a/modules/jta/src/main/java/org/apache/ignite/cache/jta/websphere/WebSphereTmFactory.java
+++ b/modules/jta/src/main/java/org/apache/ignite/cache/jta/websphere/WebSphereTmFactory.java
@@ -105,6 +105,7 @@ public class WebSphereTmFactory implements Factory<TransactionManager> {
             throw new IgniteException(e);
         }
     }
+
     /**
      *
      */
diff --git a/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/IgniteSinkTask.java b/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/IgniteSinkTask.java
index 85971d1..184f309 100644
--- a/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/IgniteSinkTask.java
+++ b/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/IgniteSinkTask.java
@@ -176,6 +176,7 @@ public class IgniteSinkTask extends SinkTask {
         /** Instance holder. */
         private static class Holder {
             private static final Ignite IGNITE = Ignition.start(igniteConfigFile);
+
             private static final IgniteDataStreamer STREAMER = IGNITE.dataStreamer(cacheName);
         }
 
diff --git a/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/serialization/CacheEventConverter.java b/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/serialization/CacheEventConverter.java
index 57eb7de..6a60bad 100644
--- a/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/serialization/CacheEventConverter.java
+++ b/modules/kafka/src/main/java/org/apache/ignite/stream/kafka/connect/serialization/CacheEventConverter.java
@@ -30,6 +30,7 @@ import org.apache.kafka.connect.storage.Converter;
  */
 public class CacheEventConverter implements Converter {
     private final CacheEventDeserializer deserializer = new CacheEventDeserializer();
+
     private final CacheEventSerializer serializer = new CacheEventSerializer();
 
     /** {@inheritDoc} */
diff --git a/modules/kubernetes/src/main/java/org/apache/ignite/spi/discovery/tcp/ipfinder/kubernetes/TcpDiscoveryKubernetesIpFinder.java b/modules/kubernetes/src/main/java/org/apache/ignite/spi/discovery/tcp/ipfinder/kubernetes/TcpDiscoveryKubernetesIpFinder.java
index 03e00b5c..e5f05ba 100644
--- a/modules/kubernetes/src/main/java/org/apache/ignite/spi/discovery/tcp/ipfinder/kubernetes/TcpDiscoveryKubernetesIpFinder.java
+++ b/modules/kubernetes/src/main/java/org/apache/ignite/spi/discovery/tcp/ipfinder/kubernetes/TcpDiscoveryKubernetesIpFinder.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.spi.discovery.tcp.ipfinder.kubernetes;
 
-
 import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.net.URL;
@@ -93,7 +92,9 @@ public class TcpDiscoveryKubernetesIpFinder extends TcpDiscoveryIpFinderAdapter
     private TrustManager[] trustAll = new TrustManager[] {
         new X509TrustManager() {
             @Override public void checkServerTrusted(X509Certificate[] certs, String authType) {}
+
             @Override public void checkClientTrusted(X509Certificate[] certs, String authType) {}
+
             @Override public X509Certificate[] getAcceptedIssuers() { return null; }
         }
     };
diff --git a/modules/log4j2/src/test/java/org/apache/ignite/logger/log4j2/Log4j2LoggerVerboseModeSelfTest.java b/modules/log4j2/src/test/java/org/apache/ignite/logger/log4j2/Log4j2LoggerVerboseModeSelfTest.java
index 2cfea53..8de18c1 100644
--- a/modules/log4j2/src/test/java/org/apache/ignite/logger/log4j2/Log4j2LoggerVerboseModeSelfTest.java
+++ b/modules/log4j2/src/test/java/org/apache/ignite/logger/log4j2/Log4j2LoggerVerboseModeSelfTest.java
@@ -67,10 +67,8 @@ public class Log4j2LoggerVerboseModeSelfTest {
             System.setOut(new PrintStream(testOut));
             System.setErr(new PrintStream(testErr));
 
-
             System.setProperty("IGNITE_QUIET", "false");
 
-
             try (Ignite ignite = G.start(getConfiguration("verboseLogGrid", LOG_PATH_VERBOSE_TEST))) {
 
                 ignite.log().error(testMsg + Level.ERROR);
diff --git a/modules/ml/spark-model-parser/src/main/java/org/apache/ignite/ml/sparkmodelparser/SupportedSparkModels.java b/modules/ml/spark-model-parser/src/main/java/org/apache/ignite/ml/sparkmodelparser/SupportedSparkModels.java
index 935d975..31d99c8 100644
--- a/modules/ml/spark-model-parser/src/main/java/org/apache/ignite/ml/sparkmodelparser/SupportedSparkModels.java
+++ b/modules/ml/spark-model-parser/src/main/java/org/apache/ignite/ml/sparkmodelparser/SupportedSparkModels.java
@@ -58,7 +58,6 @@ public enum SupportedSparkModels {
      */
     GRADIENT_BOOSTED_TREES("org.apache.spark.ml.classification.GBTClassificationModel");
 
-
     /** The separator between words. */
     private final String mdlClsNameInSpark;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelOnFeaturesSubspace.java b/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelOnFeaturesSubspace.java
index 4a73782..e3c1a18 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelOnFeaturesSubspace.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelOnFeaturesSubspace.java
@@ -33,6 +33,7 @@ public class ModelOnFeaturesSubspace implements IgniteModel<Vector, Double> {
      * Features mapping to subspace.
      */
     private final Map<Integer, Integer> featuresMapping;
+
     /**
      * Trained model of features subspace.
      */
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelsComposition.java b/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelsComposition.java
index a7894c1..eef5e62 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelsComposition.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/composition/ModelsComposition.java
@@ -34,6 +34,7 @@ public class ModelsComposition implements IgniteModel<Vector, Double>, Exportabl
      * Predictions aggregator.
      */
     private final PredictionsAggregator predictionsAggregator;
+
     /**
      * Models.
      */
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/composition/boosting/GDBBinaryClassifierTrainer.java b/modules/ml/src/main/java/org/apache/ignite/ml/composition/boosting/GDBBinaryClassifierTrainer.java
index b284c36..2404d18 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/composition/boosting/GDBBinaryClassifierTrainer.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/composition/boosting/GDBBinaryClassifierTrainer.java
@@ -41,6 +41,7 @@ import org.apache.ignite.ml.tree.boosting.GDBBinaryClassifierOnTreesTrainer;
 public abstract class GDBBinaryClassifierTrainer extends GDBTrainer {
     /** External representation of first class. */
     private double externalFirstCls; //internal 0.0
+
     /** External representation of second class. */
     private double externalSecondCls; //internal 1.0
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/composition/predictionsaggregator/WeightedPredictionsAggregator.java b/modules/ml/src/main/java/org/apache/ignite/ml/composition/predictionsaggregator/WeightedPredictionsAggregator.java
index 5e0f7f1..15b5d7f 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/composition/predictionsaggregator/WeightedPredictionsAggregator.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/composition/predictionsaggregator/WeightedPredictionsAggregator.java
@@ -26,6 +26,7 @@ import org.apache.ignite.internal.util.typedef.internal.A;
 public class WeightedPredictionsAggregator implements PredictionsAggregator {
     /** Weights for predictions. */
     private final double[] weights;
+
     /** Bias. */
     private final double bias;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/PartitionContextBuilder.java b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/PartitionContextBuilder.java
index c5eac88..a93e049 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/PartitionContextBuilder.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/PartitionContextBuilder.java
@@ -51,7 +51,6 @@ public interface PartitionContextBuilder<K, V, C extends Serializable> extends S
      */
     public C build(LearningEnvironment env, Iterator<UpstreamEntry<K, V>> upstreamData, long upstreamDataSize);
 
-
     /**
      * Builds a new partition {@code context} from an {@code upstream} data.
      * Important: there is no guarantee that there will be no more than one UpstreamEntry with given key,
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/feature/extractor/impl/BinaryObjectVectorizer.java b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/feature/extractor/impl/BinaryObjectVectorizer.java
index 4ede197..d4502bd 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/feature/extractor/impl/BinaryObjectVectorizer.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/feature/extractor/impl/BinaryObjectVectorizer.java
@@ -38,6 +38,7 @@ public class BinaryObjectVectorizer<K> extends ExtractionUtils.StringCoordVector
 
     /** Object for denoting default value of feature mapping. */
     public static final String DEFAULT_VALUE = "DEFAULT";
+
     /** Mapping for feature with non-number values. */
     private HashMap<String, HashMap<Object, Double>> featureValueMappings = new HashMap<>();
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDataset.java b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDataset.java
index f6d5976..d0253fe 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDataset.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDataset.java
@@ -136,7 +136,6 @@ public class CacheBasedDataset<K, V, C extends Serializable, D extends AutoClose
                 upstreamKeepBinary
             );
 
-
             if (data != null) {
                 R res = map.apply(ctx, data, env);
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDatasetBuilder.java b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDatasetBuilder.java
index f452904..ea11943 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDatasetBuilder.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/dataset/impl/cache/CacheBasedDatasetBuilder.java
@@ -63,6 +63,7 @@ public class CacheBasedDatasetBuilder<K, V> implements DatasetBuilder<K, V> {
 
     /** Upstream keep binary. */
     private final boolean upstreamKeepBinary;
+
     /**
      * Constructs a new instance of cache based dataset builder that makes {@link CacheBasedDataset} with default
      * predicate that passes all upstream entries to dataset.
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilder.java b/modules/ml/src/main/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilder.java
index 8fcc6b2..b2a2a2b 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilder.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilder.java
@@ -84,7 +84,6 @@ public interface LearningEnvironmentBuilder extends Serializable {
         return withParallelismStrategyDependency(constant(stgy));
     }
 
-
     /**
      * Specify dependency (partition -> logging factory).
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/environment/logging/ConsoleLogger.java b/modules/ml/src/main/java/org/apache/ignite/ml/environment/logging/ConsoleLogger.java
index 78886bc..72a4202 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/environment/logging/ConsoleLogger.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/environment/logging/ConsoleLogger.java
@@ -28,6 +28,7 @@ import org.apache.ignite.ml.math.primitives.vector.Vector;
 public class ConsoleLogger implements MLLogger {
     /** Maximum Verbose level. */
     private final VerboseLevel maxVerboseLevel;
+
     /** Class name. */
     private final String clsName;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/genetic/GAGrid.java b/modules/ml/src/main/java/org/apache/ignite/ml/genetic/GAGrid.java
index 9eea278..b1bcdd2 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/genetic/GAGrid.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/genetic/GAGrid.java
@@ -42,15 +42,18 @@ import org.apache.ignite.ml.genetic.parameter.GAGridConstants;
 public class GAGrid {
     /** Ignite logger */
     private IgniteLogger igniteLog;
+
     /** GAConfiguraton */
     private GAConfiguration cfg;
+
     /** Ignite instance */
     private Ignite ignite;
+
     /** Population cache */
     private IgniteCache<Long, Chromosome> populationCache;
+
     /** Gene cache */
     private IgniteCache<Long, Gene> geneCache;
-   
 
     /**
      * @param cfg GAConfiguration
@@ -280,8 +283,6 @@ public class GAGrid {
 
     }
 
-  
-
     /**
      * Perform mutation
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/genetic/parameter/GAConfiguration.java b/modules/ml/src/main/java/org/apache/ignite/ml/genetic/parameter/GAConfiguration.java
index 619f56d..d12eb38 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/genetic/parameter/GAConfiguration.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/genetic/parameter/GAConfiguration.java
@@ -43,6 +43,7 @@ public class GAConfiguration {
 
     /** Criteria used to describe a chromosome */
     private ChromosomeCriteria chromosomeCriteria = null;
+
     /**
      * Percentage of most fit chromosomes to be maintained and utilized to copy into new population.
      *
@@ -51,6 +52,7 @@ public class GAConfiguration {
      * Accepted values between 0 and 1
      */
     private double truncateRate;
+
     /**
      * Elitism is the concept that the strongest members of the population will be preserved from generation to
      * generation. <br/>
@@ -66,6 +68,7 @@ public class GAConfiguration {
      * isHigherFitnessValueFitter=true is considered fittest.
      */
     private boolean isHigherFitnessValFitter = true;
+
     /**
      * Population size represents the number of potential solutions (ie: chromosomes) between each generation Default
      * size is 500
@@ -79,6 +82,7 @@ public class GAConfiguration {
 
     /** Number of genes within a chromosome */
     private int chromosomeLen = 0;
+
     /**
      * Crossover rate is the probability that two chromosomes will breed with each other. offspring with traits of each
      * of the parents.
@@ -86,6 +90,7 @@ public class GAConfiguration {
      * Accepted values are between 0 and 1
      */
     private double crossOverRate = .50;
+
     /**
      * Mutation rate is the probability that a chromosome will be mutated offspring with traits of each of the parents.
      *
@@ -93,6 +98,7 @@ public class GAConfiguration {
      * Accepted values are between 0 and 1
      */
     private double mutationRate = .50;
+
     /**
      * Call back interface used to terminate Genetic algorithm.
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/AbstractMatrix.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/AbstractMatrix.java
index 8d23053..20fef5d 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/AbstractMatrix.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/AbstractMatrix.java
@@ -52,15 +52,19 @@ public abstract class AbstractMatrix implements Matrix {
     // Stochastic sparsity analysis.
     /** */
     private static final double Z95 = 1.959964;
+
     /** */
     private static final double Z80 = 1.281552;
+
     /** */
     private static final int MAX_SAMPLES = 500;
+
     /** */
     private static final int MIN_SAMPLES = 15;
 
     /** Cached minimum element. */
     private Element minElm;
+
     /** Cached maximum element. */
     private Element maxElm = null;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/LUDecomposition.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/LUDecomposition.java
index f418936..0585126 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/LUDecomposition.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/LUDecomposition.java
@@ -44,13 +44,16 @@ public class LUDecomposition implements AutoCloseable {
 
     /** Parity of the permutation associated with the LU decomposition. */
     private boolean even;
+
     /** Singularity indicator. */
     private boolean singular;
 
     /** Cached value of L. */
     private Matrix cachedL;
+
     /** Cached value of U. */
     private Matrix cachedU;
+
     /** Cached value of P. */
     private Matrix cachedP;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/DenseMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/DenseMatrixStorage.java
index ae32d9c..8ccc78a 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/DenseMatrixStorage.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/DenseMatrixStorage.java
@@ -33,12 +33,16 @@ import org.apache.ignite.ml.math.util.MatrixUtil;
 public class DenseMatrixStorage implements MatrixStorage {
     /** Backing data array. */
     private double[] data;
+
     /** Amount of rows in the matrix. */
     private int rows;
+
     /** Amount of columns in the matrix. */
     private int cols;
+
     /** Mode specifying if this matrix is row-major or column-major. */
     private int stoMode;
+
     /** Index mapper */
     private IgniteIntIntToIntBiFunction idxMapper;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/SparseMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/SparseMatrixStorage.java
index 20046cf..7347d7c 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/SparseMatrixStorage.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/SparseMatrixStorage.java
@@ -36,12 +36,16 @@ import org.apache.ignite.ml.math.primitives.matrix.MatrixStorage;
 public class SparseMatrixStorage implements MatrixStorage, StorageConstants {
     /** Default zero value. */
     private static final double DEFAULT_VALUE = 0.0;
+
     /** */
     private int rows;
+
     /** */
     private int cols;
+
     /** */
     private int acsMode;
+
     /** */
     private int stoMode;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/ViewMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/ViewMatrixStorage.java
index 99cda58..6d5ecde 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/ViewMatrixStorage.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/matrix/storage/ViewMatrixStorage.java
@@ -31,11 +31,13 @@ public class ViewMatrixStorage implements MatrixStorage {
 
     /** Row offset in the parent matrix. */
     private int rowOff;
+
     /** Column offset in the parent matrix. */
     private int colOff;
 
     /** Amount of rows in the matrix. */
     private int rows;
+
     /** Amount of columns in the matrix. */
     private int cols;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/AbstractVector.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/AbstractVector.java
index ddfa703..dbd0112 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/AbstractVector.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/AbstractVector.java
@@ -63,6 +63,7 @@ public abstract class AbstractVector implements Vector {
 
     /** Maximum cached element. */
     private Element maxElm = null;
+
     /** Minimum cached element. */
     private Element minElm = null;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/Vector.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/Vector.java
index 22eb74a..2f3af45 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/Vector.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/Vector.java
@@ -572,7 +572,6 @@ public interface Vector extends MetaAttributes, Externalizable, StorageOpsMetric
      **/
     public void compute(int i, IgniteIntDoubleToDoubleBiFunction f);
 
-
     /**
      * Returns array of doubles corresponds to vector components.
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/impl/VectorizedViewMatrix.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/impl/VectorizedViewMatrix.java
index 5990567..27b0a3b 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/impl/VectorizedViewMatrix.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/impl/VectorizedViewMatrix.java
@@ -35,11 +35,13 @@ public class VectorizedViewMatrix extends AbstractVector {
 
     /** */
     private int row;
+
     /** */
     private int col;
 
     /** */
     private int rowStride;
+
     /** */
     private int colStride;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/storage/VectorizedViewMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/storage/VectorizedViewMatrixStorage.java
index 9c59169..716a59f 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/storage/VectorizedViewMatrixStorage.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/storage/VectorizedViewMatrixStorage.java
@@ -34,11 +34,13 @@ public class VectorizedViewMatrixStorage implements VectorStorage {
 
     /** */
     private int row;
+
     /** */
     private int col;
 
     /** */
     private int rowStride;
+
     /** */
     private int colStride;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesModel.java b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesModel.java
index 3b86be6..3c35841 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesModel.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesModel.java
@@ -32,21 +32,26 @@ import java.io.Serializable;
 public class DiscreteNaiveBayesModel implements IgniteModel<Vector, Double>, Exportable<DiscreteNaiveBayesModel>, Serializable {
     /** */
     private static final long serialVersionUID = -127386523291350345L;
+
     /**
      * Probabilities of features for all classes for each label. {@code labels[c][f][b]} contains a probability for
      * class {@code c} for feature {@code f} for bucket {@code b}.
      */
     private final double[][][] probabilities;
+
     /** Prior probabilities of each class */
     private final double[] clsProbabilities;
+
     /** Labels. */
     private final double[] labels;
+
     /**
      * The bucket thresholds to convert a features to discrete values. {@code bucketThresholds[f][b]} contains the right
      * border for feature {@code f} for bucket {@code b}. Everything which is above the last thresdold goes to the next
      * bucket.
      */
     private final double[][] bucketThresholds;
+
     /** Amount values in each buckek for each feature per label. */
     private final DiscreteNaiveBayesSumsHolder sumsHolder;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesSumsHolder.java b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesSumsHolder.java
index 61ac692..9ea18ca 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesSumsHolder.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesSumsHolder.java
@@ -25,8 +25,10 @@ import org.apache.ignite.ml.math.util.MapUtil;
 public class DiscreteNaiveBayesSumsHolder implements AutoCloseable, Serializable {
     /** Serial version uid. */
     private static final long serialVersionUID = -2059362365851744206L;
+
     /** Sums of values correspones to a particular bucket for all features for each label */
     Map<Double, long[][]> valuesInBucketPerLbl = new HashMap<>();
+
     /** Rows count for each label */
     Map<Double, Integer> featureCountersPerLbl = new HashMap<>();
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesModel.java b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesModel.java
index 92617d7..bef2e39 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesModel.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesModel.java
@@ -30,14 +30,19 @@ import org.apache.ignite.ml.math.primitives.vector.Vector;
 public class GaussianNaiveBayesModel implements IgniteModel<Vector, Double>, Exportable<GaussianNaiveBayesModel>, Serializable {
     /** */
     private static final long serialVersionUID = -127386523291350345L;
+
     /** Means of features for all classes. kth row contains means for labels[k] class. */
     private final double[][] means;
+
     /** Variances of features for all classes. kth row contains variances for labels[k] class */
     private final double[][] variances;
+
     /** Prior probabilities of each class */
     private final double[] classProbabilities;
+
     /** Labels. */
     private final double[] labels;
+
     /** Feature sum, squared sum and count per label. */
     private final GaussianNaiveBayesSumsHolder sumsHolder;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesSumsHolder.java b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesSumsHolder.java
index 331e11f..eecec74 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesSumsHolder.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesSumsHolder.java
@@ -25,10 +25,13 @@ import org.apache.ignite.ml.math.util.MapUtil;
 class GaussianNaiveBayesSumsHolder implements Serializable, AutoCloseable {
     /** Serial version uid. */
     private static final long serialVersionUID = 1L;
+
     /** Sum of all values for all features for each label */
     Map<Double, double[]> featureSumsPerLbl = new HashMap<>();
+
     /** Sum of all squared values for all features for each label */
     Map<Double, double[]> featureSquaredSumsPerLbl = new HashMap<>();
+
     /** Rows count for each label */
     Map<Double, Integer> featureCountersPerLbl = new HashMap<>();
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainer.java b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainer.java
index 5757330..40ca840 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainer.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainer.java
@@ -68,7 +68,6 @@ public class GaussianNaiveBayesTrainer extends SingleLabelDatasetTrainer<Gaussia
             (env, upstream, upstreamSize) -> new EmptyContext(),
             (env, upstream, upstreamSize, ctx) -> {
 
-
                 GaussianNaiveBayesSumsHolder res = new GaussianNaiveBayesSumsHolder();
                 while (upstream.hasNext()) {
                     UpstreamEntry<K, V> entity = upstream.next();
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/optimization/LossFunctions.java b/modules/ml/src/main/java/org/apache/ignite/ml/optimization/LossFunctions.java
index 741337e..59a7fc9 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/optimization/LossFunctions.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/optimization/LossFunctions.java
@@ -44,6 +44,7 @@ public class LossFunctions {
                 }).sum() / (vector.size());
             }
         };
+
     /**
      * Log loss function.
      */
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/optimization/updatecalculators/RPropParameterUpdate.java b/modules/ml/src/main/java/org/apache/ignite/ml/optimization/updatecalculators/RPropParameterUpdate.java
index b56b450..effeb49 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/optimization/updatecalculators/RPropParameterUpdate.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/optimization/updatecalculators/RPropParameterUpdate.java
@@ -42,7 +42,6 @@ public class RPropParameterUpdate implements Serializable {
     /** Sums updates during one training. */
     public static final IgniteFunction<List<RPropParameterUpdate>, RPropParameterUpdate> SUM_LOCAL = RPropParameterUpdate::sumLocal;
 
-
     /** */
     private static final long serialVersionUID = -165584242642323332L;
 
@@ -55,6 +54,7 @@ public class RPropParameterUpdate implements Serializable {
      * Previous iteration model partial derivatives by parameters.
      */
     protected Vector prevIterationGradient;
+
     /**
      * Previous iteration parameters deltas. In original paper they are labeled with "delta".
      */
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/pipeline/Pipeline.java b/modules/ml/src/main/java/org/apache/ignite/ml/pipeline/Pipeline.java
index fdf86f0..1060efd 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/pipeline/Pipeline.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/pipeline/Pipeline.java
@@ -155,6 +155,4 @@ public class Pipeline<K, V, C extends Serializable, L> {
             .withPreprocessor(finalPreprocessor)
             .withInternalMdl(internalMdl);
     }
-
-
 }
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/Preprocessor.java b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/Preprocessor.java
index e8f44a9..2f21a9d 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/Preprocessor.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/Preprocessor.java
@@ -39,6 +39,4 @@ public interface Preprocessor<K, V> extends IgniteBiFunction<K, V, LabeledVector
     public default <L1, L2> Preprocessor<K, V> map(IgniteFunction<LabeledVector<L1>, LabeledVector<L2>> func) {
         return new MappedPreprocessor<K, V, L1, L2>(this, func);
     }
-
-
 }
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/maxabsscaling/MaxAbsScalerPreprocessor.java b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/maxabsscaling/MaxAbsScalerPreprocessor.java
index d2ec395..aa8a49f 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/maxabsscaling/MaxAbsScalerPreprocessor.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/maxabsscaling/MaxAbsScalerPreprocessor.java
@@ -17,7 +17,6 @@
 
 package org.apache.ignite.ml.preprocessing.maxabsscaling;
 
-
 import org.apache.ignite.ml.preprocessing.Preprocessor;
 import org.apache.ignite.ml.structures.LabeledVector;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerData.java b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerData.java
index f96dcc5..cbcbd4e 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerData.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerData.java
@@ -20,8 +20,10 @@ package org.apache.ignite.ml.preprocessing.standardscaling;
 public class StandardScalerData implements AutoCloseable {
     /** Sum values of every feature. */
     double[] sum;
+
     /** Sum of squared values of every feature. */
     double[] squaredSum;
+
     /** Rows count */
     long cnt;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerPreprocessor.java b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerPreprocessor.java
index 8f5bf09..c060448 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerPreprocessor.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/preprocessing/standardscaling/StandardScalerPreprocessor.java
@@ -39,6 +39,7 @@ public class StandardScalerPreprocessor<K, V> implements Preprocessor<K, V> {
 
     /** Means for each column. */
     private final double[] means;
+
     /** Standard deviation for each column. */
     private final double[] sigmas;
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/selection/cv/CrossValidation.java b/modules/ml/src/main/java/org/apache/ignite/ml/selection/cv/CrossValidation.java
index 01466fa..b3c70e5 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/selection/cv/CrossValidation.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/selection/cv/CrossValidation.java
@@ -321,7 +321,6 @@ public class CrossValidation<M extends IgniteModel<Vector, L>, L, K, V> {
         return scores;
     }
 
-
     /**
      * Computes cross-validated metrics with a passed parameter grid.
      *
@@ -353,7 +352,6 @@ public class CrossValidation<M extends IgniteModel<Vector, L>, L, K, V> {
         paramSets.forEach(paramSet -> {
             Map<String, Double> paramMap = new HashMap<>();
 
-
             for (int paramIdx = 0; paramIdx < paramSet.length; paramIdx++) {
                 String paramName = paramGrid.getParamNameByIndex(paramIdx);
                 Double paramVal = paramSet[paramIdx];
@@ -401,7 +399,6 @@ public class CrossValidation<M extends IgniteModel<Vector, L>, L, K, V> {
                 amountOfFolds
             );
 
-
             cvRes.addScores(locScores, paramMap);
 
             final double locAvgScore = Arrays.stream(locScores).average().orElse(Double.MIN_VALUE);
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/evaluator/Evaluator.java b/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/evaluator/Evaluator.java
index fd9cc6e..a8787fa 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/evaluator/Evaluator.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/evaluator/Evaluator.java
@@ -158,7 +158,6 @@ public class Evaluator {
         return calcMetricValues(dataCache, null, mdl, preprocessor);
     }
 
-
     /**
      * Computes the given metrics on the given cache.
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/classification/BinaryClassificationMetrics.java b/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/classification/BinaryClassificationMetrics.java
index 53c21a0..e1966bd 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/classification/BinaryClassificationMetrics.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/classification/BinaryClassificationMetrics.java
@@ -42,6 +42,7 @@ public class BinaryClassificationMetrics extends AbstractMetrics<BinaryClassific
     {
         metric = BinaryClassificationMetricValues::accuracy;
     }
+
     /**
      * Calculates binary metrics values.
      *
@@ -76,7 +77,6 @@ public class BinaryClassificationMetrics extends AbstractMetrics<BinaryClassific
             else if (truth == negativeClsLb && prediction == negativeClsLb) tn++;
             else if (truth == negativeClsLb && prediction == positiveClsLb) fp++;
 
-
             if(enableROCAUC) {
                 queue.add(new Pair<>(prediction, truth));
 
@@ -93,7 +93,6 @@ public class BinaryClassificationMetrics extends AbstractMetrics<BinaryClassific
         if (enableROCAUC)
             rocauc = ROCAUC.calculateROCAUC(queue, pos, neg, positiveClsLb);
 
-
         return new BinaryClassificationMetricValues(tp, tn, fp, fn, rocauc);
     }
 
@@ -127,7 +126,6 @@ public class BinaryClassificationMetrics extends AbstractMetrics<BinaryClassific
         return this;
     }
 
-
     /** */
     public boolean isROCAUCenabled() {
         return enableROCAUC;
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/exceptions/UnknownClassLabelException.java b/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/exceptions/UnknownClassLabelException.java
index 6c10f32..050a8de 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/exceptions/UnknownClassLabelException.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/selection/scoring/metric/exceptions/UnknownClassLabelException.java
@@ -26,7 +26,6 @@ public class UnknownClassLabelException extends IgniteException {
     /** */
     private static final long serialVersionUID = 0L;
 
-
     /**
      * @param incorrectVal Incorrect value.
      * @param positiveClsLb Positive class label.
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/structures/LabeledVectorSet.java b/modules/ml/src/main/java/org/apache/ignite/ml/structures/LabeledVectorSet.java
index 576885f..5d2da6f 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/structures/LabeledVectorSet.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/structures/LabeledVectorSet.java
@@ -95,7 +95,6 @@ public class LabeledVectorSet<L, Row extends LabeledVector> extends Dataset<Row>
         super(data, colSize);
     }
 
-
     /**
      * Creates new local Labeled Dataset by matrix and vector of labels.
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/trainers/AdaptableDatasetTrainer.java b/modules/ml/src/main/java/org/apache/ignite/ml/trainers/AdaptableDatasetTrainer.java
index ee8bbb1..e4486e3 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/trainers/AdaptableDatasetTrainer.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/trainers/AdaptableDatasetTrainer.java
@@ -180,7 +180,6 @@ public class AdaptableDatasetTrainer<I, O, IW, OW, M extends IgniteModel<IW, OW>
                 )));
             }
 
-
             /** {@inheritDoc} */
             @Override public boolean isUpdateable(M mdl) {
                 return false;
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/trainers/TrainerTransformers.java b/modules/ml/src/main/java/org/apache/ignite/ml/trainers/TrainerTransformers.java
index 8661d4b..b34b15b 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/trainers/TrainerTransformers.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/trainers/TrainerTransformers.java
@@ -59,6 +59,7 @@ public class TrainerTransformers {
         PredictionsAggregator aggregator) {
         return makeBagged(trainer, ensembleSize, subsampleRatio, -1, -1, aggregator);
     }
+
     /**
      * Add bagging logic to a given trainer.
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/tree/impurity/ImpurityMeasureCalculator.java b/modules/ml/src/main/java/org/apache/ignite/ml/tree/impurity/ImpurityMeasureCalculator.java
index 2f2f7ce..9e0251b 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/tree/impurity/ImpurityMeasureCalculator.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/tree/impurity/ImpurityMeasureCalculator.java
@@ -52,7 +52,6 @@ public abstract class ImpurityMeasureCalculator<T extends ImpurityMeasure<T>> im
      */
     public abstract StepFunction<T>[] calculate(DecisionTreeData data, TreeFilter filter, int depth);
 
-
     /**
      * Returns columns count in current dataset.
      *
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/util/ModelTrace.java b/modules/ml/src/main/java/org/apache/ignite/ml/util/ModelTrace.java
index d34ab62..ec29a21 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/util/ModelTrace.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/util/ModelTrace.java
@@ -29,8 +29,10 @@ import org.jetbrains.annotations.NotNull;
 public class ModelTrace {
     /** Model name. */
     private final String mdlName;
+
     /** Use pretty mode. */
     private final boolean pretty;
+
     /** Model fields. */
     private List<IgniteBiTuple<String, Object>> mdlFields = new ArrayList<>();
 
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/util/SandboxMLCache.java b/modules/ml/src/main/java/org/apache/ignite/ml/util/SandboxMLCache.java
index 57bf961..d122ba1 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/util/SandboxMLCache.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/util/SandboxMLCache.java
@@ -34,7 +34,6 @@ import org.apache.ignite.ml.math.exceptions.knn.FileParsingException;
 import org.apache.ignite.ml.math.primitives.vector.Vector;
 import org.apache.ignite.ml.math.primitives.vector.VectorUtils;
 
-
 /**
  * Common utility code used in some ML examples to set up test cache.
  */
diff --git a/modules/ml/src/main/java/org/apache/ignite/ml/util/generators/primitives/scalar/GaussRandomProducer.java b/modules/ml/src/main/java/org/apache/ignite/ml/util/generators/primitives/scalar/GaussRandomProducer.java
index 0fcfcdf..43a9f85 100644
--- a/modules/ml/src/main/java/org/apache/ignite/ml/util/generators/primitives/scalar/GaussRandomProducer.java
+++ b/modules/ml/src/main/java/org/apache/ignite/ml/util/generators/primitives/scalar/GaussRandomProducer.java
@@ -25,6 +25,7 @@ import org.apache.ignite.internal.util.typedef.internal.A;
 public class GaussRandomProducer extends RandomProducerWithGenerator {
     /** Mean. */
     private final double mean;
+
     /** Variance. */
     private final double variance;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/common/KeepBinaryTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/common/KeepBinaryTest.java
index 826ff47..9f21ae4 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/common/KeepBinaryTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/common/KeepBinaryTest.java
@@ -39,8 +39,10 @@ import java.util.UUID;
 public class KeepBinaryTest extends GridCommonAbstractTest {
     /** Number of nodes in grid. */
     private static final int NODE_COUNT = 2;
+
     /** Number of samples. */
     public static final int NUMBER_OF_SAMPLES = 1000;
+
     /** Half of samples. */
     public static final int HALF = NUMBER_OF_SAMPLES / 2;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/common/LocalModelsTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/common/LocalModelsTest.java
index 2bc2197..9c1cdda 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/common/LocalModelsTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/common/LocalModelsTest.java
@@ -205,7 +205,6 @@ public class LocalModelsTest {
 
             Assert.assertNotNull(load);
 
-
             NNClassificationModel importedMdl = new ANNClassificationModel(load.getCandidates(), new ANNClassificationTrainer.CentroidStat())
                 .withK(load.getK())
                 .withDistanceMeasure(load.getDistanceMeasure())
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/dataset/feature/ObjectHistogramTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/dataset/feature/ObjectHistogramTest.java
index 54dab5a..91e8b12 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/dataset/feature/ObjectHistogramTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/dataset/feature/ObjectHistogramTest.java
@@ -34,11 +34,13 @@ import static org.junit.Assert.assertTrue;
 public class ObjectHistogramTest {
     /** Data first partition. */
     private double[] dataFirstPart = new double[] {0., 0., 0., 0., 1., 1., 1, 2., 2., 3., 4., 5.};
+
     /** Data second partition. */
     private double[] dataSecondPart = new double[] {0., 1., 0., 1., 0., 1., 0, 1., 0., 1., 0., 5., 6.};
 
     /** */
     private ObjectHistogram<Double> hist1;
+
     /** */
     private ObjectHistogram<Double> hist2;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/dataset/primitive/SimpleDatasetTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/dataset/primitive/SimpleDatasetTest.java
index 0aec623..7aec928 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/dataset/primitive/SimpleDatasetTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/dataset/primitive/SimpleDatasetTest.java
@@ -67,7 +67,6 @@ public class SimpleDatasetTest {
                 assertArrayEquals("Covariance matrix row " + rowCov,
                     covExp[rowCov++], row, 0);
 
-
             double[][] corrExp = new double[][] {
                 new double[] {1.0000000000000002, 0.31990250167874007},
                 new double[] {0.31990250167874007, 1.0}
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilderTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilderTest.java
index 7769092..0590636 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilderTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentBuilderTest.java
@@ -31,7 +31,6 @@ import static org.apache.ignite.ml.environment.parallelism.ParallelismStrategy.T
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 
-
 /**
  * Tests for {@link LearningEnvironmentBuilder}.
  */
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentTest.java
index 197b5b9..cc27f1d 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/environment/LearningEnvironmentTest.java
@@ -106,7 +106,6 @@ public class LearningEnvironmentTest {
                 return false;
             }
 
-
             /** {@inheritDoc} */
              @Override protected <K, V> IgniteModel<Object, Vector> updateModel(IgniteModel<Object, Vector> mdl,
                 DatasetBuilder<K, V> datasetBuilder, Preprocessor<K, V> preprocessor) {
@@ -120,7 +119,6 @@ public class LearningEnvironmentTest {
         for (int i = 0; i < partitions; i++)
             exp.set(i, i * iterations);
 
-
         Vector res = mdl.predict(null);
         assertEquals(exp, res);
     }
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/LUDecompositionTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/LUDecompositionTest.java
index 366f644..795161d 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/LUDecompositionTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/LUDecompositionTest.java
@@ -34,12 +34,16 @@ import static org.junit.Assert.assertEquals;
 public class LUDecompositionTest {
     /** */
     private Matrix testL;
+
     /** */
     private Matrix testU;
+
     /** */
     private Matrix testP;
+
     /** */
     private Matrix testMatrix;
+
     /** */
     private int[] rawPivot;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixAttributeTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixAttributeTest.java
index 3b12223..827d283 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixAttributeTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixAttributeTest.java
@@ -83,10 +83,13 @@ public class MatrixAttributeTest {
     private static class Specification {
         /** */
         private final Matrix m;
+
         /** */
         private final Class<? extends Matrix> underlyingType;
+
         /** */
         private final List<String> attrsFromUnderlying;
+
         /** */
         final String desc;
 
@@ -122,8 +125,10 @@ public class MatrixAttributeTest {
     private static class AttrCfg {
         /** */
         final String name;
+
         /** */
         final Function<Matrix, Boolean> obtain;
+
         /** */
         final List<Class> trueInTypes;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixStorageFixtures.java b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixStorageFixtures.java
index cadf9fe..5942cdc 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixStorageFixtures.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/matrix/MatrixStorageFixtures.java
@@ -55,18 +55,22 @@ class MatrixStorageFixtures {
     private static class SparseLocalMatrixStorageFixture implements Iterable<MatrixStorage> {
         /** */
         private final Integer[] rows = new Integer[] {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 512, 1024, null};
+
         /** */
         private final Integer[] cols = new Integer[] {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 1024, 512, null};
 
         /** */
         private final Integer[] randomAccess = new Integer[] {StorageConstants.SEQUENTIAL_ACCESS_MODE, StorageConstants.RANDOM_ACCESS_MODE, null};
+
         /** */
         private final Integer[] rowStorage = new Integer[] {StorageConstants.ROW_STORAGE_MODE, StorageConstants.COLUMN_STORAGE_MODE, null};
 
         /** */
         private int sizeIdx = 0;
+
         /** */
         private int acsModeIdx = 0;
+
         /** */
         private int stoModeIdx = 0;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/MatrixVectorViewTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/MatrixVectorViewTest.java
index 6541570..27a559c 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/MatrixVectorViewTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/MatrixVectorViewTest.java
@@ -33,8 +33,10 @@ import static org.junit.Assert.assertTrue;
 public class MatrixVectorViewTest {
     /** */
     private static final String UNEXPECTED_VALUE = "Unexpected value";
+
     /** */
     private static final int SMALL_SIZE = 3;
+
     /** */
     private static final int IMPOSSIBLE_SIZE = -1;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorAttributesTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorAttributesTest.java
index cf48e35..acaa104 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorAttributesTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorAttributesTest.java
@@ -97,10 +97,13 @@ public class VectorAttributesTest {
     private static class Specification {
         /** */
         private final Vector v;
+
         /** */
         private final Class<? extends Vector> underlyingType;
+
         /** */
         private final List<String> attrsFromUnderlying;
+
         /** */
         final String desc;
 
@@ -136,8 +139,10 @@ public class VectorAttributesTest {
     private static class AttrCfg {
         /** */
         final String name;
+
         /** */
         final Function<Vector, Boolean> obtain;
+
         /** */
         final List<Class> trueInTypes;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorImplementationsFixtures.java b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorImplementationsFixtures.java
index d1fb56b..07a6074 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorImplementationsFixtures.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/math/primitives/vector/VectorImplementationsFixtures.java
@@ -158,10 +158,13 @@ class VectorImplementationsFixtures {
     private static class VectorSizesExtraIterator<T> extends VectorSizesIterator {
         /** */
         private final T[] extras;
+
         /** */
         private int extraIdx = 0;
+
         /** */
         private final BiFunction<Integer, T, Vector> ctor;
+
         /** */
         private final String extraParamName;
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesTrainerTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesTrainerTest.java
index 6a234f4..a864fd6 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesTrainerTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/discrete/DiscreteNaiveBayesTrainerTest.java
@@ -42,6 +42,7 @@ public class DiscreteNaiveBayesTrainerTest extends TrainerTest {
 
     /** Data. */
     private static final Map<Integer, double[]> data = new HashMap<>();
+
     /** */
     private static final double[][] binarizedDatathresholds = new double[][] {{.5}, {.5}, {.5}, {.5}, {.5}};
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainerTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainerTest.java
index b7ccf4f..80927e9 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainerTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/naivebayes/gaussian/GaussianNaiveBayesTrainerTest.java
@@ -35,15 +35,19 @@ import org.junit.Test;
 public class GaussianNaiveBayesTrainerTest extends TrainerTest {
     /** Precision in test checks. */
     private static final double PRECISION = 1e-2;
+
     /** */
     private static final double LABEL_1 = 1.;
+
     /** */
     private static final double LABEL_2 = 2.;
 
     /** Data. */
     private static final Map<Integer, double[]> data = new HashMap<>();
+
     /** */
     private static final Map<Integer, double[]> singleLabeldata1 = new HashMap<>();
+
     /** */
     private static final Map<Integer, double[]> singleLabeldata2 = new HashMap<>();
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/preprocessing/encoding/OneHotEncoderPreprocessorTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/preprocessing/encoding/OneHotEncoderPreprocessorTest.java
index 4adead1..a324e1f 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/preprocessing/encoding/OneHotEncoderPreprocessorTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/preprocessing/encoding/OneHotEncoderPreprocessorTest.java
@@ -184,7 +184,6 @@ public class OneHotEncoderPreprocessorTest {
 
         Vectorizer<Integer, Vector, Integer, Double> vectorizer = new DummyVectorizer<>(0, 1, 2);
 
-
         OneHotEncoderPreprocessor<Integer, Vector> preprocessor = new OneHotEncoderPreprocessor<Integer, Vector>(
             new HashMap[]{new HashMap() {
                 {
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/regressions/linear/LinearRegressionSGDTrainerTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/regressions/linear/LinearRegressionSGDTrainerTest.java
index b89c09b..22b16d1 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/regressions/linear/LinearRegressionSGDTrainerTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/regressions/linear/LinearRegressionSGDTrainerTest.java
@@ -97,7 +97,6 @@ public class LinearRegressionSGDTrainerTest extends TrainerTest {
             new DoubleArrayVectorizer<Integer>().labeled(Vectorizer.LabelCoordinate.LAST)
         );
 
-
         LinearRegressionModel updatedOnSameDS = trainer.withSeed(0).update(
             originalMdl,
             data,
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/selection/paramgrid/ParameterSetGeneratorTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/selection/paramgrid/ParameterSetGeneratorTest.java
index 8e36024..3af7593 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/selection/paramgrid/ParameterSetGeneratorTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/selection/paramgrid/ParameterSetGeneratorTest.java
@@ -40,6 +40,7 @@ public class ParameterSetGeneratorTest {
         List<Double[]> res = new ParameterSetGenerator(map).generate();
         assertEquals(res.size(), 16);
     }
+
     /** */
     @Test(expected = java.lang.AssertionError.class)
     public void testParamSetGeneratorWithEmptyMap() {
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/cursor/CacheBasedLabelPairCursorTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/cursor/CacheBasedLabelPairCursorTest.java
index 26858ed..c8d2bb4 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/cursor/CacheBasedLabelPairCursorTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/cursor/CacheBasedLabelPairCursorTest.java
@@ -61,7 +61,6 @@ public class CacheBasedLabelPairCursorTest extends GridCommonAbstractTest {
 
         Vectorizer<Integer, double[], Integer, Double> vectorizer = new DoubleArrayVectorizer<Integer>().labeled(Vectorizer.LabelCoordinate.FIRST);
 
-
         LabelPairCursor<Double> cursor = new CacheBasedLabelPairCursor<>(
             data,
             (k, v) -> v[1] % 2 == 0,
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/BinaryClassificationEvaluatorTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/BinaryClassificationEvaluatorTest.java
index f8ae61f..86abd55 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/BinaryClassificationEvaluatorTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/BinaryClassificationEvaluatorTest.java
@@ -74,7 +74,6 @@ public class BinaryClassificationEvaluatorTest extends TrainerTest {
 
         KNNClassificationTrainer trainer = new KNNClassificationTrainer();
 
-
         TrainTestSplit<Integer, Vector> split = new TrainTestDatasetSplitter<Integer, Vector>()
             .split(0.75);
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/RegressionEvaluatorTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/RegressionEvaluatorTest.java
index e8a6bb2..5a01bab 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/RegressionEvaluatorTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/selection/scoring/evaluator/RegressionEvaluatorTest.java
@@ -105,7 +105,6 @@ public class RegressionEvaluatorTest extends TrainerTest {
 
         KNNRegressionTrainer trainer = new KNNRegressionTrainer();
 
-
         TrainTestSplit<Integer, Vector> split = new TrainTestDatasetSplitter<Integer, Vector>()
             .split(0.5);
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/tree/impurity/gini/GiniImpurityMeasureTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/tree/impurity/gini/GiniImpurityMeasureTest.java
index db46335..25f635d 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/tree/impurity/gini/GiniImpurityMeasureTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/tree/impurity/gini/GiniImpurityMeasureTest.java
@@ -80,7 +80,6 @@ public class GiniImpurityMeasureTest {
             new long[]{randCnt(rnd), randCnt(rnd), randCnt(rnd)}
         );
 
-
         GiniImpurityMeasure b = new GiniImpurityMeasure(
             new long[]{randCnt(rnd), randCnt(rnd), randCnt(rnd)},
             new long[]{randCnt(rnd), randCnt(rnd), randCnt(rnd)}
@@ -107,7 +106,6 @@ public class GiniImpurityMeasureTest {
             new long[]{randCnt(rnd), randCnt(rnd), randCnt(rnd)}
         );
 
-
         GiniImpurityMeasure b = new GiniImpurityMeasure(
             new long[]{randCnt(rnd), randCnt(rnd), randCnt(rnd)},
             new long[]{randCnt(rnd), randCnt(rnd), randCnt(rnd)}
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/TreeNodeTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/TreeNodeTest.java
index eb420cc..f89eca2 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/TreeNodeTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/TreeNodeTest.java
@@ -28,6 +28,7 @@ import static org.junit.Assert.assertEquals;
 public class TreeNodeTest {
     /** Features 1. */
     private final Vector features1 = VectorUtils.of(0., 1.);
+
     /** Features 2. */
     private final Vector features2 = VectorUtils.of(1., 0.);
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/GiniFeatureHistogramTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/GiniFeatureHistogramTest.java
index a82bb95..5f2b059 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/GiniFeatureHistogramTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/GiniFeatureHistogramTest.java
@@ -37,8 +37,10 @@ import static org.junit.Assert.assertTrue;
 public class GiniFeatureHistogramTest extends ImpurityHistogramTest {
     /** Feature 1 meta. */
     private BucketMeta feature1Meta = new BucketMeta(new FeatureMeta("", 0, true));
+
     /** Feature 2 meta. */
     private BucketMeta feature2Meta = new BucketMeta(new FeatureMeta("", 1, false));
+
     /** Feature 3 meta. */
     private BucketMeta feature3Meta = new BucketMeta(new FeatureMeta("", 2, true));
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/MSEHistogramTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/MSEHistogramTest.java
index cdc1851..1055157 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/MSEHistogramTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/tree/randomforest/data/impurity/MSEHistogramTest.java
@@ -33,6 +33,7 @@ import static org.junit.Assert.assertTrue;
 public class MSEHistogramTest extends ImpurityHistogramTest {
     /** Feature 1 meta. */
     private BucketMeta feature1Meta = new BucketMeta(new FeatureMeta("", 0, true));
+
     /** Feature 2 meta. */
     private BucketMeta feature2Meta = new BucketMeta(new FeatureMeta("", 1, false));
 
diff --git a/modules/ml/src/test/java/org/apache/ignite/ml/util/generators/DataStreamGeneratorTest.java b/modules/ml/src/test/java/org/apache/ignite/ml/util/generators/DataStreamGeneratorTest.java
index a299a2a..e106106 100644
--- a/modules/ml/src/test/java/org/apache/ignite/ml/util/generators/DataStreamGeneratorTest.java
+++ b/modules/ml/src/test/java/org/apache/ignite/ml/util/generators/DataStreamGeneratorTest.java
@@ -159,8 +159,6 @@ public class DataStreamGeneratorTest {
         checkDataset(N / 2, b3, v -> (Double)v.label() < 0);
     }
 
-
-
     /** */
     private void checkDataset(int sampleSize, DatasetBuilder<Vector, Double> datasetBuilder,
         Predicate<LabeledVector> labelCheck) throws Exception {
diff --git a/modules/spring-data/src/main/java/org/apache/ignite/springdata/repository/query/IgniteRepositoryQuery.java b/modules/spring-data/src/main/java/org/apache/ignite/springdata/repository/query/IgniteRepositoryQuery.java
index c6e171f..7b0c98a 100644
--- a/modules/spring-data/src/main/java/org/apache/ignite/springdata/repository/query/IgniteRepositoryQuery.java
+++ b/modules/spring-data/src/main/java/org/apache/ignite/springdata/repository/query/IgniteRepositoryQuery.java
@@ -75,15 +75,19 @@ public class IgniteRepositoryQuery implements RepositoryQuery {
 
     /** Type. */
     private final Class<?> type;
+
     /** Sql. */
     private final IgniteQuery qry;
+
     /** Cache. */
     private final IgniteCache cache;
 
     /** Method. */
     private final Method mtd;
+
     /** Metadata. */
     private final RepositoryMetadata metadata;
+
     /** Factory. */
     private final ProjectionFactory factory;
 
diff --git a/modules/spring/src/test/java/org/apache/ignite/spring/injection/IgniteSpringBeanSpringResourceInjectionTest.java b/modules/spring/src/test/java/org/apache/ignite/spring/injection/IgniteSpringBeanSpringResourceInjectionTest.java
index a2c27fd..d067f21 100644
--- a/modules/spring/src/test/java/org/apache/ignite/spring/injection/IgniteSpringBeanSpringResourceInjectionTest.java
+++ b/modules/spring/src/test/java/org/apache/ignite/spring/injection/IgniteSpringBeanSpringResourceInjectionTest.java
@@ -100,6 +100,7 @@ public class IgniteSpringBeanSpringResourceInjectionTest extends GridCommonAbstr
     public static class ServiceWithSpringResourceImpl implements ServiceWithSpringResource, Service {
         /** */
         private static final long serialVersionUID = 0L;
+
         /** */
         @SpringResource(resourceClass = Integer.class)
         private transient Integer injectedSpringFld;
diff --git a/modules/ssh/src/test/java/org/apache/ignite/internal/IgniteProjectionStartStopRestartSelfTest.java b/modules/ssh/src/test/java/org/apache/ignite/internal/IgniteProjectionStartStopRestartSelfTest.java
index 32d5373..ff5c287 100644
--- a/modules/ssh/src/test/java/org/apache/ignite/internal/IgniteProjectionStartStopRestartSelfTest.java
+++ b/modules/ssh/src/test/java/org/apache/ignite/internal/IgniteProjectionStartStopRestartSelfTest.java
@@ -770,6 +770,7 @@ public class IgniteProjectionStartStopRestartSelfTest extends GridCommonAbstract
 
         return maps;
     }
+
     /**
      * @throws InterruptedException If failed.
      */
diff --git a/modules/storm/src/main/java/org/apache/ignite/stream/storm/StormStreamer.java b/modules/storm/src/main/java/org/apache/ignite/stream/storm/StormStreamer.java
index 1cba8ad..df0c973 100644
--- a/modules/storm/src/main/java/org/apache/ignite/stream/storm/StormStreamer.java
+++ b/modules/storm/src/main/java/org/apache/ignite/stream/storm/StormStreamer.java
@@ -280,6 +280,7 @@ public class StormStreamer<K, V> extends StreamAdapter<Tuple, K, V> implements I
         /** Instance holder. */
         private static class Holder {
             private static final Ignite IGNITE = Ignition.start(igniteConfigFile);
+
             private static final IgniteDataStreamer STREAMER = IGNITE.dataStreamer(cacheName);
         }
 
diff --git a/modules/tools/src/main/java/org/apache/ignite/tools/classgen/ClassesGenerator.java b/modules/tools/src/main/java/org/apache/ignite/tools/classgen/ClassesGenerator.java
index 2be847b..11d2574 100644
--- a/modules/tools/src/main/java/org/apache/ignite/tools/classgen/ClassesGenerator.java
+++ b/modules/tools/src/main/java/org/apache/ignite/tools/classgen/ClassesGenerator.java
@@ -35,6 +35,7 @@ import java.util.Comparator;
 import java.util.TreeSet;
 import java.util.jar.JarEntry;
 import java.util.jar.JarInputStream;
+
 /**
  * Serialized classes generator.
  */
@@ -123,7 +124,6 @@ public class ClassesGenerator {
     private void generate() throws Exception {
         System.out.println("Generating classnames.properties...");
 
-
         for (URL url : classLoaderUrls(getClass().getClassLoader()))
             processUrl(url);
 
@@ -240,7 +240,6 @@ public class ClassesGenerator {
         }
     }
 
-
     /**
      * @param path File path.
      * @param prefixLen Prefix length.
diff --git a/modules/web-console/web-agent/src/main/java/org/apache/ignite/console/agent/handlers/DatabaseListener.java b/modules/web-console/web-agent/src/main/java/org/apache/ignite/console/agent/handlers/DatabaseListener.java
index fde38bf..13dc92d 100644
--- a/modules/web-console/web-agent/src/main/java/org/apache/ignite/console/agent/handlers/DatabaseListener.java
+++ b/modules/web-console/web-agent/src/main/java/org/apache/ignite/console/agent/handlers/DatabaseListener.java
@@ -334,8 +334,10 @@ public class DatabaseListener {
     private static class JdbcDriver {
         /** */
         public final String jdbcDriverJar;
+
         /** */
         public final String jdbcDriverCls;
+
         /** */
         public final String jdbcDriverImplVersion;
 
diff --git a/modules/web/src/test/java/org/apache/ignite/internal/websession/WebSessionSelfTest.java b/modules/web/src/test/java/org/apache/ignite/internal/websession/WebSessionSelfTest.java
index 288b0ef..ba02ea7 100644
--- a/modules/web/src/test/java/org/apache/ignite/internal/websession/WebSessionSelfTest.java
+++ b/modules/web/src/test/java/org/apache/ignite/internal/websession/WebSessionSelfTest.java
@@ -1150,6 +1150,7 @@ public class WebSessionSelfTest extends GridCommonAbstractTest {
                 res.getWriter().flush();
             }
         }
+
         /** {@inheritDoc} */
         @Override protected void doPost(HttpServletRequest req, HttpServletResponse res)
                 throws ServletException, IOException {
diff --git a/modules/yardstick/src/main/java/org/apache/ignite/yardstick/cache/IgniteCacheAbstractBenchmark.java b/modules/yardstick/src/main/java/org/apache/ignite/yardstick/cache/IgniteCacheAbstractBenchmark.java
index 8b37dbe..378d0e8 100644
--- a/modules/yardstick/src/main/java/org/apache/ignite/yardstick/cache/IgniteCacheAbstractBenchmark.java
+++ b/modules/yardstick/src/main/java/org/apache/ignite/yardstick/cache/IgniteCacheAbstractBenchmark.java
@@ -348,6 +348,7 @@ public abstract class IgniteCacheAbstractBenchmark<K, V> extends IgniteAbstractB
     static class ThreadRange {
         /** */
         final int min;
+
         /** */
         final int max;
 
diff --git a/modules/yardstick/src/main/java/org/apache/ignite/yardstick/jdbc/mvcc/AbstractDistributedMvccBenchmark.java b/modules/yardstick/src/main/java/org/apache/ignite/yardstick/jdbc/mvcc/AbstractDistributedMvccBenchmark.java
index daf50a1..6c3c42e 100644
--- a/modules/yardstick/src/main/java/org/apache/ignite/yardstick/jdbc/mvcc/AbstractDistributedMvccBenchmark.java
+++ b/modules/yardstick/src/main/java/org/apache/ignite/yardstick/jdbc/mvcc/AbstractDistributedMvccBenchmark.java
@@ -41,6 +41,7 @@ public abstract class AbstractDistributedMvccBenchmark extends IgniteAbstractBen
 
     /** Member id of the host driver is running */
     protected int memberId;
+
     /**
      * Number of nodes handled by driver.
      */
diff --git a/modules/zookeeper/src/test/java/org/apache/ignite/spi/discovery/tcp/ipfinder/zk/curator/TestingZooKeeperServer.java b/modules/zookeeper/src/test/java/org/apache/ignite/spi/discovery/tcp/ipfinder/zk/curator/TestingZooKeeperServer.java
index dbe651a..fb11d08 100644
--- a/modules/zookeeper/src/test/java/org/apache/ignite/spi/discovery/tcp/ipfinder/zk/curator/TestingZooKeeperServer.java
+++ b/modules/zookeeper/src/test/java/org/apache/ignite/spi/discovery/tcp/ipfinder/zk/curator/TestingZooKeeperServer.java
@@ -40,10 +40,13 @@ public class TestingZooKeeperServer extends QuorumPeerMain implements Closeable
 
     /** Config builder. */
     private final QuorumConfigBuilder configBuilder;
+
     /** This instance index. */
     private final int thisInstanceIndex;
+
     /** Main. */
     private volatile ZooKeeperMainFace main;
+
     /** State. */
     private final AtomicReference<State> state = new AtomicReference<>(State.LATENT);