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Posted to commits@ignite.apache.org by ni...@apache.org on 2024/01/30 11:31:11 UTC

(ignite) branch master updated: IGNITE-14823 Sequence, socket, source abbrevations (#11208)

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 aec5f953949 IGNITE-14823 Sequence, socket, source abbrevations (#11208)
aec5f953949 is described below

commit aec5f9539494e1b9216de427e15ecec4a3874881
Author: Nikolay <ni...@apache.org>
AuthorDate: Tue Jan 30 14:31:04 2024 +0300

    IGNITE-14823 Sequence, socket, source abbrevations (#11208)
---
 .../processors/query/calcite/exec/exp/RexImpTable.java |  6 +++---
 .../query/calcite/exec/exp/RexToLixTranslator.java     |  6 +++---
 .../query/calcite/metadata/ColocationGroup.java        |  8 ++++----
 .../query/calcite/prepare/FragmentSplitter.java        |  8 ++++----
 .../query/calcite/prepare/IgniteSqlToRelConvertor.java |  6 +++---
 .../query/calcite/prepare/IgniteSqlValidator.java      | 16 ++++++++--------
 .../processors/query/calcite/prepare/Splitter.java     |  8 ++++----
 .../query/calcite/rel/AbstractIgniteJoin.java          |  4 ++--
 modules/checkstyle/src/main/resources/abbrevations.csv |  6 +++---
 .../commandline/CommandHandlerParsingTest.java         | 12 ++++++------
 .../ignite/internal/jdbc/thin/JdbcThinSSLUtil.java     |  4 ++--
 .../internal/util/io/GridReversedLinesFileReader.java  | 10 +++++-----
 ...acheJdbcPojoWriteBehindStoreWithCoalescingTest.java | 10 +++++-----
 .../java/org/apache/ignite/client/ConnectionTest.java  | 18 +++++++++---------
 .../IgnitePersistentStoreDataStructuresTest.java       |  8 ++++----
 .../ServiceHotRedeploymentViaDeploymentSpiTest.java    |  4 ++--
 .../org/apache/ignite/internal/util/EchoServer.java    |  4 ++--
 .../ignite/internal/util/IgniteUtilsSelfTest.java      |  4 ++--
 .../tcp/TcpCommunicationHandshakeTimeoutTest.java      |  6 +++---
 .../spi/discovery/tcp/DiscoveryClientSocketTest.java   | 16 ++++++++--------
 .../tcp/TcpClientDiscoveryUnresolvedHostTest.java      |  6 +++---
 21 files changed, 85 insertions(+), 85 deletions(-)

diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexImpTable.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexImpTable.java
index 2d8d047ff3b..44f70ff2ad4 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexImpTable.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexImpTable.java
@@ -1531,11 +1531,11 @@ public class RexImpTable {
         @Override Expression implementSafe(final RexToLixTranslator translator,
             final RexCall call, final List<Expression> argValueList) {
             assert call.getOperands().size() == 1;
-            final RelDataType sourceType = call.getOperands().get(0).getType();
+            final RelDataType srcType = call.getOperands().get(0).getType();
 
             // Short-circuit if no cast is required
             RexNode arg = call.getOperands().get(0);
-            if (call.getType().equals(sourceType)) {
+            if (call.getType().equals(srcType)) {
                 // No cast required, omit cast
                 return argValueList.get(0);
             }
@@ -1548,7 +1548,7 @@ public class RexImpTable {
             }
             final RelDataType targetType =
                 nullifyType(translator.typeFactory, call.getType(), false);
-            return translator.translateCast(sourceType,
+            return translator.translateCast(srcType,
                 targetType, argValueList.get(0));
         }
 
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexToLixTranslator.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexToLixTranslator.java
index 94de7699a27..95ff5d77780 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexToLixTranslator.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/RexToLixTranslator.java
@@ -577,12 +577,12 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
                         case BINARY:
                         case VARBINARY:
                             // If this is a widening cast, no need to truncate.
-                            final int sourcePrecision = sourceType.getPrecision();
-                            if (SqlTypeUtil.comparePrecision(sourcePrecision, targetPrecision) <= 0)
+                            final int srcPrecision = sourceType.getPrecision();
+                            if (SqlTypeUtil.comparePrecision(srcPrecision, targetPrecision) <= 0)
                                 truncate = false;
 
                             // If this is a widening cast, no need to pad.
-                            if (SqlTypeUtil.comparePrecision(sourcePrecision, targetPrecision) >= 0)
+                            if (SqlTypeUtil.comparePrecision(srcPrecision, targetPrecision) >= 0)
                                 pad = false;
 
                             // fall through
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/ColocationGroup.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/ColocationGroup.java
index baa36c26aef..cb9cbe426d5 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/ColocationGroup.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/ColocationGroup.java
@@ -142,11 +142,11 @@ public class ColocationGroup implements MarshalableMessage {
      * being calculated fragment.
      */
     public ColocationGroup colocate(ColocationGroup other) throws ColocationMappingException {
-        long[] sourceIds;
+        long[] srcIds;
         if (this.sourceIds == null || other.sourceIds == null)
-            sourceIds = U.firstNotNull(this.sourceIds, other.sourceIds);
+            srcIds = U.firstNotNull(this.sourceIds, other.sourceIds);
         else
-            sourceIds = LongStream.concat(Arrays.stream(this.sourceIds), Arrays.stream(other.sourceIds)).distinct().toArray();
+            srcIds = LongStream.concat(Arrays.stream(this.sourceIds), Arrays.stream(other.sourceIds)).distinct().toArray();
 
         List<UUID> nodeIds;
         if (this.nodeIds == null || other.nodeIds == null)
@@ -198,7 +198,7 @@ public class ColocationGroup implements MarshalableMessage {
             }
         }
 
-        return new ColocationGroup(sourceIds, nodeIds, assignments);
+        return new ColocationGroup(srcIds, nodeIds, assignments);
     }
 
     /** */
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FragmentSplitter.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FragmentSplitter.java
index 6757fdf711f..9518b661307 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FragmentSplitter.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FragmentSplitter.java
@@ -106,14 +106,14 @@ public class FragmentSplitter extends IgniteRelShuttle {
         RelNode input = rel instanceof IgniteTrimExchange ? rel.getInput(0) : rel;
 
         long targetFragmentId = curr.id;
-        long sourceFragmentId = IdGenerator.nextId();
-        long exchangeId = sourceFragmentId;
+        long srcFragmentId = IdGenerator.nextId();
+        long exchangeId = srcFragmentId;
 
-        IgniteReceiver receiver = new IgniteReceiver(cluster, traits, rowType, exchangeId, sourceFragmentId);
+        IgniteReceiver receiver = new IgniteReceiver(cluster, traits, rowType, exchangeId, srcFragmentId);
         IgniteSender snd = new IgniteSender(cluster, traits, input, exchangeId, targetFragmentId, rel.distribution());
 
         curr.remotes.add(receiver);
-        stack.push(new FragmentProto(sourceFragmentId, snd));
+        stack.push(new FragmentProto(srcFragmentId, snd));
 
         return receiver;
     }
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlToRelConvertor.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlToRelConvertor.java
index d72729ab3a6..86620510834 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlToRelConvertor.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlToRelConvertor.java
@@ -231,7 +231,7 @@ public class IgniteSqlToRelConvertor extends SqlToRelConverter {
 
         // first, convert the merge's source select to construct the columns
         // from the target table and the set expressions in the update call
-        RelNode mergeSourceRel = convertSelect(
+        RelNode mergeSrcRel = convertSelect(
             requireNonNull(call.getSourceSelect(), () -> "sourceSelect for " + call), false);
 
         // then, convert the insert statement so we can get the insert
@@ -260,7 +260,7 @@ public class IgniteSqlToRelConvertor extends SqlToRelConverter {
             nLevel1Exprs = level1InsertExprs.size();
         }
 
-        LogicalJoin join = (LogicalJoin)mergeSourceRel.getInput(0);
+        LogicalJoin join = (LogicalJoin)mergeSrcRel.getInput(0);
 
         final List<RexNode> projects = new ArrayList<>();
 
@@ -276,7 +276,7 @@ public class IgniteSqlToRelConvertor extends SqlToRelConverter {
                 projects.add(level1InsertExprs.get(level1Idx));
         }
         if (updateCall != null) {
-            final LogicalProject project = (LogicalProject)mergeSourceRel;
+            final LogicalProject project = (LogicalProject)mergeSrcRel;
             projects.addAll(project.getProjects());
         }
         else {
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlValidator.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlValidator.java
index 09b2b240cb6..bbd2c119430 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlValidator.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/IgniteSqlValidator.java
@@ -189,16 +189,16 @@ public class IgniteSqlValidator extends SqlValidatorImpl {
         for (SqlNode exp : call.getSourceExpressionList())
             selectList.add(SqlValidatorUtil.addAlias(exp, SqlUtil.deriveAliasFromOrdinal(ordinal++)));
 
-        SqlNode sourceTable = call.getTargetTable();
+        SqlNode srcTable = call.getTargetTable();
 
         if (call.getAlias() != null) {
-            sourceTable =
+            srcTable =
                 SqlValidatorUtil.addAlias(
-                    sourceTable,
+                    srcTable,
                     call.getAlias().getSimple());
         }
 
-        return new SqlSelect(SqlParserPos.ZERO, null, selectList, sourceTable,
+        return new SqlSelect(SqlParserPos.ZERO, null, selectList, srcTable,
             call.getCondition(), null, null, null, null, null, null, null);
     }
 
@@ -207,16 +207,16 @@ public class IgniteSqlValidator extends SqlValidatorImpl {
         final SqlNodeList selectList = SqlNodeList.of(
             new SqlIdentifier(QueryUtils.KEY_FIELD_NAME, SqlParserPos.ZERO));
 
-        SqlNode sourceTable = call.getTargetTable();
+        SqlNode srcTable = call.getTargetTable();
 
         if (call.getAlias() != null) {
-            sourceTable =
+            srcTable =
                 SqlValidatorUtil.addAlias(
-                    sourceTable,
+                    srcTable,
                     call.getAlias().getSimple());
         }
 
-        return new SqlSelect(SqlParserPos.ZERO, null, selectList, sourceTable,
+        return new SqlSelect(SqlParserPos.ZERO, null, selectList, srcTable,
             call.getCondition(), null, null, null, null, null, null, null);
     }
 
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/Splitter.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/Splitter.java
index 2157930c272..802c2913af1 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/Splitter.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/Splitter.java
@@ -81,15 +81,15 @@ public class Splitter extends IgniteRelShuttle {
         RelOptCluster cluster = rel.getCluster();
 
         long targetFragmentId = curr.id;
-        long sourceFragmentId = IdGenerator.nextId();
-        long exchangeId = sourceFragmentId;
+        long srcFragmentId = IdGenerator.nextId();
+        long exchangeId = srcFragmentId;
 
-        IgniteReceiver receiver = new IgniteReceiver(cluster, rel.getTraitSet(), rel.getRowType(), exchangeId, sourceFragmentId);
+        IgniteReceiver receiver = new IgniteReceiver(cluster, rel.getTraitSet(), rel.getRowType(), exchangeId, srcFragmentId);
         IgniteSender snd = new IgniteSender(cluster, rel.getTraitSet(), rel.getInput(), exchangeId, targetFragmentId,
             rel.distribution());
 
         curr.remotes.add(receiver);
-        stack.push(new FragmentProto(sourceFragmentId, snd));
+        stack.push(new FragmentProto(srcFragmentId, snd));
 
         return receiver;
     }
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rel/AbstractIgniteJoin.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rel/AbstractIgniteJoin.java
index db73391b6ba..25826f40abe 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rel/AbstractIgniteJoin.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rel/AbstractIgniteJoin.java
@@ -301,12 +301,12 @@ public abstract class AbstractIgniteJoin extends Join implements TraitsAwareIgni
 
     /** Creates mapping from left join keys to the right and vice versa with regards to {@code left2Right}. */
     protected Mappings.TargetMapping buildTransposeMapping(boolean left2Right) {
-        ImmutableIntList sourceKeys = left2Right ? joinInfo.leftKeys : joinInfo.rightKeys;
+        ImmutableIntList srcKeys = left2Right ? joinInfo.leftKeys : joinInfo.rightKeys;
         ImmutableIntList targetKeys = left2Right ? joinInfo.rightKeys : joinInfo.leftKeys;
 
         Map<Integer, Integer> keyMap = new HashMap<>();
         for (int i = 0; i < joinInfo.leftKeys.size(); i++)
-            keyMap.put(sourceKeys.get(i), targetKeys.get(i));
+            keyMap.put(srcKeys.get(i), targetKeys.get(i));
 
         return Mappings.target(
             keyMap,
diff --git a/modules/checkstyle/src/main/resources/abbrevations.csv b/modules/checkstyle/src/main/resources/abbrevations.csv
index 591ab9c475f..388657f7683 100644
--- a/modules/checkstyle/src/main/resources/abbrevations.csv
+++ b/modules/checkstyle/src/main/resources/abbrevations.csv
@@ -64,9 +64,9 @@ response,res
 sender,snd
 service,srvc
 session,ses
-#sequence,seq
-#socket,sock
-#source,src
+sequence,seq
+socket,sock
+source,src
 #string,s,str
 #subject,subj
 #system,sys
diff --git a/modules/control-utility/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java b/modules/control-utility/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java
index b2ed1bab2b8..bd574ea104b 100644
--- a/modules/control-utility/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java
+++ b/modules/control-utility/src/test/java/org/apache/ignite/internal/commandline/CommandHandlerParsingTest.java
@@ -284,11 +284,11 @@ public class CommandHandlerParsingTest {
         List<List<T>> res = new ArrayList<>();
 
         for (int i = 0; i < source.size(); i++) {
-            List<T> sourceCopy = new ArrayList<>(source);
+            List<T> srcCopy = new ArrayList<>(source);
 
-            T removed = sourceCopy.remove(i);
+            T removed = srcCopy.remove(i);
 
-            generateAllCombinations(singletonList(removed), sourceCopy, stopFunc, res);
+            generateAllCombinations(singletonList(removed), srcCopy, stopFunc, res);
         }
 
         return res;
@@ -314,13 +314,13 @@ public class CommandHandlerParsingTest {
         for (int i = 0; i < source.size(); i++) {
             ArrayList<T> res0 = new ArrayList<>(res);
 
-            List<T> sourceCopy = new ArrayList<>(source);
+            List<T> srcCopy = new ArrayList<>(source);
 
-            T removed = sourceCopy.remove(i);
+            T removed = srcCopy.remove(i);
 
             res0.add(removed);
 
-            generateAllCombinations(res0, sourceCopy, stopFunc, acc);
+            generateAllCombinations(res0, srcCopy, stopFunc, acc);
         }
     }
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/jdbc/thin/JdbcThinSSLUtil.java b/modules/core/src/main/java/org/apache/ignite/internal/jdbc/thin/JdbcThinSSLUtil.java
index d52095fe336..8c7ca94ab53 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/jdbc/thin/JdbcThinSSLUtil.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/jdbc/thin/JdbcThinSSLUtil.java
@@ -73,9 +73,9 @@ public class JdbcThinSSLUtil {
      */
     public static SSLSocket createSSLSocket(InetSocketAddress addr, ConnectionProperties connProps) throws SQLException {
         try {
-            SSLSocketFactory sslSocketFactory = getSSLSocketFactory(connProps);
+            SSLSocketFactory sslSockFactory = getSSLSocketFactory(connProps);
 
-            SSLSocket sock = (SSLSocket)sslSocketFactory.createSocket(addr.getAddress(), addr.getPort());
+            SSLSocket sock = (SSLSocket)sslSockFactory.createSocket(addr.getAddress(), addr.getPort());
 
             sock.setUseClientMode(true);
 
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 04bb8907a9b..12c80a00f4d 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
@@ -351,14 +351,14 @@ public class GridReversedLinesFileReader implements Closeable {
          * @return length of newline sequence or 0 if none found
          */
         private int getNewLineMatchByteCount(byte[] data, int i) {
-            for (byte[] newLineSequence : newLineSequences) {
+            for (byte[] newLineSeq : newLineSequences) {
                 boolean match = true;
-                for (int j = newLineSequence.length - 1; j >= 0; j--) {
-                    int k = i + j - (newLineSequence.length - 1);
-                    match &= k >= 0 && data[k] == newLineSequence[j];
+                for (int j = newLineSeq.length - 1; j >= 0; j--) {
+                    int k = i + j - (newLineSeq.length - 1);
+                    match &= k >= 0 && data[k] == newLineSeq[j];
                 }
                 if (match) {
-                    return newLineSequence.length;
+                    return newLineSeq.length;
                 }
             }
             return 0;
diff --git a/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoWriteBehindStoreWithCoalescingTest.java b/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoWriteBehindStoreWithCoalescingTest.java
index 3714c6f7f59..d02653ce1c2 100644
--- a/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoWriteBehindStoreWithCoalescingTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/cache/store/jdbc/CacheJdbcPojoWriteBehindStoreWithCoalescingTest.java
@@ -102,15 +102,15 @@ public class CacheJdbcPojoWriteBehindStoreWithCoalescingTest extends GridCommonA
 
     /** */
     public TestJdbcPojoDataSourceFactory getDataSourceFactory() {
-        TestJdbcPojoDataSourceFactory testJdbcPojoDataSourceFactory = new TestJdbcPojoDataSourceFactory();
+        TestJdbcPojoDataSourceFactory testJdbcPojoDataSrcFactory = new TestJdbcPojoDataSourceFactory();
 
-        testJdbcPojoDataSourceFactory.setURL("jdbc:h2:mem:TestDatabase;DB_CLOSE_DELAY=-1");
+        testJdbcPojoDataSrcFactory.setURL("jdbc:h2:mem:TestDatabase;DB_CLOSE_DELAY=-1");
 
-        testJdbcPojoDataSourceFactory.setUserName("sa");
+        testJdbcPojoDataSrcFactory.setUserName("sa");
 
-        testJdbcPojoDataSourceFactory.setPassword("");
+        testJdbcPojoDataSrcFactory.setPassword("");
 
-        return testJdbcPojoDataSourceFactory;
+        return testJdbcPojoDataSrcFactory;
     }
 
     /** */
diff --git a/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java b/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java
index cdb8222fc01..d147352e74f 100644
--- a/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java
@@ -101,14 +101,14 @@ public class ConnectionTest {
     @Test
     public void testHandshakeTooLargeServerDropsConnection() throws Exception {
         try (LocalIgniteCluster ignored = LocalIgniteCluster.start(1, IPv4_HOST)) {
-            Socket clientSocket = new Socket(IPv4_HOST, 10800);
-            OutputStream stream = clientSocket.getOutputStream();
+            Socket clientSock = new Socket(IPv4_HOST, 10800);
+            OutputStream stream = clientSock.getOutputStream();
 
             stream.write(new byte[]{1, 1, 1, 1});
             stream.flush();
 
             // Read returns -1 when end of stream has been reached, blocks otherwise.
-            assertEquals(-1, clientSocket.getInputStream().read());
+            assertEquals(-1, clientSock.getInputStream().read());
         }
     }
 
@@ -116,15 +116,15 @@ public class ConnectionTest {
     @Test
     public void testNegativeMessageSizeDropsConnection() throws Exception {
         try (LocalIgniteCluster ignored = LocalIgniteCluster.start(1, IPv4_HOST)) {
-            Socket clientSocket = new Socket(IPv4_HOST, 10800);
-            OutputStream stream = clientSocket.getOutputStream();
+            Socket clientSock = new Socket(IPv4_HOST, 10800);
+            OutputStream stream = clientSock.getOutputStream();
 
             byte b = (byte)255;
             stream.write(new byte[]{b, b, b, b});
             stream.flush();
 
             // Read returns -1 when end of stream has been reached, blocks otherwise.
-            assertEquals(-1, clientSocket.getInputStream().read());
+            assertEquals(-1, clientSock.getInputStream().read());
         }
     }
 
@@ -132,13 +132,13 @@ public class ConnectionTest {
     @Test
     public void testInvalidHandshakeHeaderDropsConnection() throws Exception {
         try (LocalIgniteCluster ignored = LocalIgniteCluster.start(1, IPv4_HOST)) {
-            Socket clientSocket = new Socket(IPv4_HOST, 10800);
-            OutputStream stream = clientSocket.getOutputStream();
+            Socket clientSock = new Socket(IPv4_HOST, 10800);
+            OutputStream stream = clientSock.getOutputStream();
 
             stream.write(new byte[]{10, 0, 0, 0, 42, 42, 42});
             stream.flush();
 
-            assertEquals(-1, clientSocket.getInputStream().read());
+            assertEquals(-1, clientSock.getInputStream().read());
         }
     }
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePersistentStoreDataStructuresTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePersistentStoreDataStructuresTest.java
index a4348eec021..4cbc0bc3b0d 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePersistentStoreDataStructuresTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePersistentStoreDataStructuresTest.java
@@ -144,12 +144,12 @@ public class IgnitePersistentStoreDataStructuresTest extends GridCommonAbstractT
 
         ignite.cluster().state(ClusterState.ACTIVE);
 
-        IgniteAtomicSequence sequence = ignite.atomicSequence("testSequence", 0, true);
+        IgniteAtomicSequence seq = ignite.atomicSequence("testSequence", 0, true);
 
         int i = 0;
 
         while (i < 1000) {
-            sequence.incrementAndGet();
+            seq.incrementAndGet();
 
             i++;
         }
@@ -160,9 +160,9 @@ public class IgnitePersistentStoreDataStructuresTest extends GridCommonAbstractT
 
         ignite.cluster().state(ClusterState.ACTIVE);
 
-        sequence = ignite.atomicSequence("testSequence", 0, false);
+        seq = ignite.atomicSequence("testSequence", 0, false);
 
-        assertTrue(sequence.incrementAndGet() > i);
+        assertTrue(seq.incrementAndGet() > i);
     }
 
     /**
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceHotRedeploymentViaDeploymentSpiTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceHotRedeploymentViaDeploymentSpiTest.java
index 43ba53f54a0..d08cc23ae28 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceHotRedeploymentViaDeploymentSpiTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/service/ServiceHotRedeploymentViaDeploymentSpiTest.java
@@ -206,7 +206,7 @@ public class ServiceHotRedeploymentViaDeploymentSpiTest extends GridCommonAbstra
      * @throws Exception In case of an error.
      */
     private URLClassLoader prepareClassLoader(int ver) throws Exception {
-        String source = "import org.apache.ignite.internal.processors.service.ServiceHotRedeploymentViaDeploymentSpiTest;\n" +
+        String src = "import org.apache.ignite.internal.processors.service.ServiceHotRedeploymentViaDeploymentSpiTest;\n" +
             "import org.apache.ignite.services.ServiceContext;\n" +
             "public class MyRenewServiceImpl implements ServiceHotRedeploymentViaDeploymentSpiTest.MyRenewService {\n" +
             "    @Override public int version() {\n" +
@@ -221,7 +221,7 @@ public class ServiceHotRedeploymentViaDeploymentSpiTest extends GridCommonAbstra
 
         File srcFile = new File(srcTmpDir.toFile(), "MyRenewServiceImpl.java");
 
-        Path srcFilePath = Files.write(srcFile.toPath(), source.getBytes(StandardCharsets.UTF_8));
+        Path srcFilePath = Files.write(srcFile.toPath(), src.getBytes(StandardCharsets.UTF_8));
 
         JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/EchoServer.java b/modules/core/src/test/java/org/apache/ignite/internal/util/EchoServer.java
index ae9e031ec1c..7647ea592d3 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/EchoServer.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/EchoServer.java
@@ -92,8 +92,8 @@ class EchoServer implements AutoCloseable {
         /** {@inheritDoc} */
         @Override public void run() {
             while (running) {
-                Socket socket = acceptConnection();
-                workersExecutor.submit(new Worker(socket));
+                Socket sock = acceptConnection();
+                workersExecutor.submit(new Worker(sock));
             }
         }
 
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 351e54107f5..0891309a259 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
@@ -1589,8 +1589,8 @@ public class IgniteUtilsSelfTest extends GridCommonAbstractTest {
             boolean ignoreLocalHostname = IgniteSystemProperties.getBoolean(IgniteSystemProperties.IGNITE_IGNORE_LOCAL_HOST_NAME);
             String userDefinedHost = IgniteSystemProperties.getString(IgniteSystemProperties.IGNITE_LOCAL_HOST);
 
-            InetSocketAddress inetSocketAddr = new InetSocketAddress(userDefinedHost, 0);
-            InetAddress addr = inetSocketAddr.getAddress();
+            InetSocketAddress inetSockAddr = new InetSocketAddress(userDefinedHost, 0);
+            InetAddress addr = inetSockAddr.getAddress();
             IgniteBiTuple<Collection<String>, Collection<String>> localAddrs = IgniteUtils.resolveLocalAddresses(addr);
 
             if (ignoreLocalHostname) {
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationHandshakeTimeoutTest.java b/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationHandshakeTimeoutTest.java
index c8eba14075c..22ed899f373 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationHandshakeTimeoutTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/communication/tcp/TcpCommunicationHandshakeTimeoutTest.java
@@ -78,13 +78,13 @@ public class TcpCommunicationHandshakeTimeoutTest extends GridCommonAbstractTest
         IgniteEx g1 = startGrid(1);
 
         //and: One more node which communication connection can be delayed by demand.
-        AtomicBoolean delayHandshakeUntilSocketClosed = new AtomicBoolean();
+        AtomicBoolean delayHandshakeUntilSockClosed = new AtomicBoolean();
         IgniteEx g2 = startGrid(2, new DependencyResolver() {
             @Override public <T> T resolve(T instance) {
                 if (instance instanceof TcpHandshakeExecutor) {
                     TcpHandshakeExecutor gridNioServer = (TcpHandshakeExecutor)instance;
 
-                    return (T)new DelaydTcpHandshakeExecutor(gridNioServer, delayHandshakeUntilSocketClosed);
+                    return (T)new DelaydTcpHandshakeExecutor(gridNioServer, delayHandshakeUntilSockClosed);
                 }
 
                 return instance;
@@ -102,7 +102,7 @@ public class TcpCommunicationHandshakeTimeoutTest extends GridCommonAbstractTest
         g2.context().timeout().addTimeoutObject(new GridTimeoutObjectAdapter(0) {
 
             @Override public void onTimeout() {
-                delayHandshakeUntilSocketClosed.set(true);
+                delayHandshakeUntilSockClosed.set(true);
 
                 g2.compute(g2.cluster().forNodes(Arrays.asList(g1.localNode()))).withNoFailover().call(() -> true);
 
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/DiscoveryClientSocketTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/DiscoveryClientSocketTest.java
index fb7d1f3e623..0a490782258 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/DiscoveryClientSocketTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/DiscoveryClientSocketTest.java
@@ -53,8 +53,8 @@ public class DiscoveryClientSocketTest extends GridCommonAbstractTest {
 
     /** {@inheritDoc} */
     @Override protected void beforeTest() throws Exception {
-        SslContextFactory socketFactory = (SslContextFactory)GridTestUtils.sslTrustedFactory("node01", "trustone");
-        SSLContext sslCtx = socketFactory.create();
+        SslContextFactory sockFactory = (SslContextFactory)GridTestUtils.sslTrustedFactory("node01", "trustone");
+        SSLContext sslCtx = sockFactory.create();
 
         sslSrvSockFactory = sslCtx.getServerSocketFactory();
         sslSockFactory = sslCtx.getSocketFactory();
@@ -129,18 +129,18 @@ public class DiscoveryClientSocketTest extends GridCommonAbstractTest {
      */
     public void startSslClient() {
         try {
-            Socket clientSocket = sslSockFactory.createSocket(HOST, PORT_TO_LNSR);
+            Socket clientSock = sslSockFactory.createSocket(HOST, PORT_TO_LNSR);
 
             info("Client started.");
 
-            fakeTcpDiscoverySpi.configureSocketOptions(clientSocket);
+            fakeTcpDiscoverySpi.configureSocketOptions(clientSock);
 
             long handshakeStartTime = System.currentTimeMillis();
 
             //need to send message in order to ssl handshake passed.
-            clientSocket.getOutputStream().write(U.IGNITE_HEADER);
+            clientSock.getOutputStream().write(U.IGNITE_HEADER);
 
-            readHandshake(clientSocket);
+            readHandshake(clientSock);
 
             long handshakeInterval = System.currentTimeMillis() - handshakeStartTime;
 
@@ -154,7 +154,7 @@ public class DiscoveryClientSocketTest extends GridCommonAbstractTest {
 
                     IgniteInternalFuture writeFut = GridTestUtils.runAsync(() -> {
                         try {
-                            clientSocket.getOutputStream().write(new byte[4 * 1024]);
+                            clientSock.getOutputStream().write(new byte[4 * 1024]);
                         }
                         catch (IOException e) {
                             assertEquals("Socket closed", e.getMessage());
@@ -174,7 +174,7 @@ public class DiscoveryClientSocketTest extends GridCommonAbstractTest {
             long startClose = System.currentTimeMillis();
             // Do not use try-catch-resource here, because JVM has a bug on TLS implementation and requires to close
             // socket streams explicitly.
-            U.closeQuiet(clientSocket);
+            U.closeQuiet(clientSock);
 
             info("Socket closed [time=" + (System.currentTimeMillis() - startClose) + ']');
         }
diff --git a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpClientDiscoveryUnresolvedHostTest.java b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpClientDiscoveryUnresolvedHostTest.java
index c5445e6b7be..b0249c39513 100644
--- a/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpClientDiscoveryUnresolvedHostTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/spi/discovery/tcp/TcpClientDiscoveryUnresolvedHostTest.java
@@ -78,11 +78,11 @@ public class TcpClientDiscoveryUnresolvedHostTest extends GridCommonAbstractTest
 
         /** {@inheritDoc} */
         @Override Socket createSocket() throws IOException {
-            Socket socket = super.createSocket();
+            Socket sock = super.createSocket();
 
-            sockets.add(socket);
+            sockets.add(sock);
 
-            return socket;
+            return sock;
         }
 
         /** {@inheritDoc} */