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Posted to commits@ignite.apache.org by ni...@apache.org on 2024/02/07 12:39:03 UTC

(ignite) branch master updated: IGNITE-14823 Value abbrevation (#11235)

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 0c87c39d22b IGNITE-14823 Value abbrevation (#11235)
0c87c39d22b is described below

commit 0c87c39d22b841b2dca140b07af2a0c5b08657ae
Author: Nikolay <ni...@apache.org>
AuthorDate: Wed Feb 7 15:38:53 2024 +0300

    IGNITE-14823 Value abbrevation (#11235)
---
 .../ignite/internal/benchmarks/model/IntValue.java |   4 +-
 .../query/calcite/exec/exp/RexImpTable.java        | 132 ++++++++++-----------
 .../query/calcite/exec/exp/RexToLixTranslator.java |  72 +++++------
 .../query/calcite/externalize/RelJson.java         |   4 +-
 .../query/calcite/externalize/RelJsonReader.java   |   4 +-
 .../query/calcite/externalize/RelJsonWriter.java   |   6 +-
 .../query/calcite/metadata/IgniteMdCollation.java  |   6 +-
 .../checkstyle/src/main/resources/abbrevations.csv |   2 +-
 .../rest/JettyRestProcessorGetAllAsArrayTest.java  |   8 +-
 .../thin/JdbcThinMissingLongArrayResultsTest.java  |  16 +--
 .../snapshot/SnapshotCompressionBasicTest.java     |   4 +-
 .../argument/parser/CLIArgumentParser.java         |  12 +-
 .../org/apache/ignite/internal/IgniteFeatures.java |   8 +-
 .../management/cache/CacheFindGarbageCommand.java  |   4 +-
 .../diagnostic/DiagnosticConnectivityCommand.java  |   4 +-
 .../processors/cache/GridCacheAdapter.java         |   4 +-
 .../persistence/pagemem/ExponentialBackoff.java    |   4 +-
 .../continuous/CacheContinuousQueryHandler.java    |  16 +--
 .../cache/store/GridCacheWriteBehindStore.java     |  54 ++++-----
 .../processors/cluster/ClusterProcessor.java       |   4 +-
 .../processors/odbc/odbc/OdbcMessageParser.java    |   8 +-
 .../websession/PlatformDotNetSessionData.java      |   6 +-
 .../internal/processors/query/stat/hll/HLL.java    |  80 ++++++-------
 .../BigEndianAscendingWordDeserializer.java        |  16 +--
 .../stat/hll/serialization/SchemaVersionOne.java   |  18 +--
 .../processors/query/stat/hll/util/BitVector.java  |  10 +-
 .../processors/query/stat/hll/util/HLLUtil.java    |   4 +-
 .../internal/sql/command/SqlAnalyzeCommand.java    |   4 +-
 .../internal/util/InitializationProtector.java     |  12 +-
 .../util/tostring/CircularStringBuilder.java       |   8 +-
 .../ignite/internal/GridNodeLocalSelfTest.java     |   4 +-
 .../binary/BinaryFieldExtractionSelfTest.java      |   4 +-
 .../internal/binary/BinaryMarshallerSelfTest.java  |   4 +-
 .../cache/GridCacheAbstractFullApiSelfTest.java    |   4 +-
 .../cache/GridCacheMarshallerTxAbstractTest.java   |  14 +--
 .../cache/GridCacheTtlManagerEvictionSelfTest.java |   4 +-
 .../cache/IgniteCacheInvokeAbstractTest.java       |  10 +-
 .../cache/IgniteCacheManyAsyncOperationsTest.java  |   4 +-
 .../cache/IgniteCacheObjectPutSelfTest.java        |   4 +-
 .../cache/IgniteClusterActivateDeactivateTest.java |   6 +-
 ...ridCacheAtomicReferenceApiSelfAbstractTest.java |   8 +-
 .../GridCacheQueueClientDisconnectTest.java        |   2 +-
 .../dht/IgniteCacheStartWithLoadTest.java          |   4 +-
 .../near/GridCacheNearClientHitTest.java           |  20 ++--
 ...lancingDelayedPartitionMapExchangeSelfTest.java |   4 +-
 .../IgnitePdsCacheRebalancingAbstractTest.java     |  26 ++--
 .../persistence/db/IgniteLogicalRecoveryTest.java  |   6 +-
 ...IgnitePdsCacheWalDisabledOnRebalancingTest.java |   4 +-
 .../db/file/IgnitePdsThreadInterruptionTest.java   |  12 +-
 .../IgniteCacheQueryCacheDestroySelfTest.java      |   4 +-
 .../metastorage/DistributedMetaStorageTest.java    |   4 +-
 .../platform/PlatformCacheEntryEventFilter.java    |  10 +-
 .../platform/PlatformCacheEntryEventFilterCpp.java |  10 +-
 .../PlatformCacheEntryEventFilterFactory.java      |  10 +-
 .../ignite/platform/PlatformProcessUtils.java      |   4 +-
 .../org/apache/ignite/platform/model/Value.java    |   4 +-
 .../stream/socket/SocketStreamerSelfTest.java      |   4 +-
 .../testframework/wal/record/RecordUtils.java      |   4 +-
 .../ignite/development/utils/DataEntryWrapper.java |  10 +-
 .../utils/IgniteWalConverterSensitiveDataTest.java |   6 +-
 .../development/utils/IgniteWalConverterTest.java  |  14 +--
 .../processors/query/h2/opt/GridH2IndexBase.java   |   6 +-
 .../processors/query/h2/opt/H2IndexCostedBase.java |  38 +++---
 .../cache/index/H2DynamicTableSelfTest.java        |   4 +-
 .../cache/index/IndexCorruptionRebuildTest.java    |   4 +-
 .../persistence/db/wal/IgniteWalRecoveryTest.java  |  26 ++--
 .../query/IgniteSqlCreateTableTemplateTest.java    |  12 +-
 .../query/IgniteSqlSplitterSelfTest.java           |   6 +-
 .../query/stat/StatisticsStorageRestartTest.java   |   6 +-
 .../processors/query/stat/hll/FullHLLTest.java     |  20 ++--
 .../query/stat/hll/ProbabilisticTestUtil.java      |  10 +-
 .../OpenCensusMetricExporterSpiTest.java           |   8 +-
 .../protocols/http/jetty/GridJettyRestHandler.java |   6 +-
 .../internal/websession/WebSessionSelfTest.java    |  14 +--
 74 files changed, 461 insertions(+), 461 deletions(-)

diff --git a/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/model/IntValue.java b/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/model/IntValue.java
index e68a0772794..025191ad53d 100644
--- a/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/model/IntValue.java
+++ b/modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/model/IntValue.java
@@ -90,9 +90,9 @@ public class IntValue implements Externalizable, Binarylizable {
         if (o == null || getClass() != o.getClass())
             return false;
 
-        IntValue value = (IntValue)o;
+        IntValue val = (IntValue)o;
 
-        return val == value.val;
+        return this.val == val.val;
     }
 
     /** {@inheritDoc} */
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 c5c8a378b2a..05f085ce273 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
@@ -458,9 +458,9 @@ public class RexImpTable {
 
         map.put(REINTERPRET, new ReinterpretImplementor());
 
-        final RexCallImplementor value = new ValueConstructorImplementor();
-        map.put(MAP_VALUE_CONSTRUCTOR, value);
-        map.put(ARRAY_VALUE_CONSTRUCTOR, value);
+        final RexCallImplementor val = new ValueConstructorImplementor();
+        map.put(MAP_VALUE_CONSTRUCTOR, val);
+        map.put(ARRAY_VALUE_CONSTRUCTOR, val);
         map.put(ITEM, new ItemImplementor());
 
         map.put(DEFAULT, new DefaultImplementor());
@@ -829,8 +829,8 @@ public class RexImpTable {
         @Override Expression implementSafe(final RexToLixTranslator translator,
             final RexCall call, final List<Expression> argValueList) {
             final boolean strict = !translator.conformance.allowExtendedTrim();
-            final Object value = translator.getLiteralValue(argValueList.get(0));
-            SqlTrimFunction.Flag flag = (SqlTrimFunction.Flag)value;
+            final Object val = translator.getLiteralValue(argValueList.get(0));
+            SqlTrimFunction.Flag flag = (SqlTrimFunction.Flag)val;
             return Expressions.call(
                 BuiltInMethod.TRIM.method,
                 Expressions.constant(
@@ -1056,9 +1056,9 @@ public class RexImpTable {
             List<Expression> leftExprs = Util.skip(argValueList, 2);
             // Default value for JSON_VALUE behaviors.
             Expression emptyBehavior = Expressions.constant(SqlJsonValueEmptyOrErrorBehavior.NULL);
-            Expression dfltValueOnEmpty = Expressions.constant(null);
+            Expression dfltValOnEmpty = Expressions.constant(null);
             Expression errorBehavior = Expressions.constant(SqlJsonValueEmptyOrErrorBehavior.NULL);
-            Expression dfltValueOnError = Expressions.constant(null);
+            Expression dfltValOnError = Expressions.constant(null);
             // Patched up with user defines.
             if (!leftExprs.isEmpty()) {
                 for (int i = 0; i < leftExprs.size(); i++) {
@@ -1070,7 +1070,7 @@ public class RexImpTable {
                             if (dfltSymbolIdx >= 0
                                 && translator.getLiteralValue(leftExprs.get(dfltSymbolIdx))
                                 == SqlJsonValueEmptyOrErrorBehavior.DEFAULT) {
-                                dfltValueOnEmpty = leftExprs.get(i - 1);
+                                dfltValOnEmpty = leftExprs.get(i - 1);
                                 emptyBehavior = leftExprs.get(dfltSymbolIdx);
                             }
                             else
@@ -1080,7 +1080,7 @@ public class RexImpTable {
                             if (dfltSymbolIdx >= 0
                                 && translator.getLiteralValue(leftExprs.get(dfltSymbolIdx))
                                 == SqlJsonValueEmptyOrErrorBehavior.DEFAULT) {
-                                dfltValueOnError = leftExprs.get(i - 1);
+                                dfltValOnError = leftExprs.get(i - 1);
                                 errorBehavior = leftExprs.get(dfltSymbolIdx);
                             }
                             else
@@ -1090,9 +1090,9 @@ public class RexImpTable {
                 }
             }
             newOperands.add(emptyBehavior);
-            newOperands.add(dfltValueOnEmpty);
+            newOperands.add(dfltValOnEmpty);
             newOperands.add(errorBehavior);
-            newOperands.add(dfltValueOnError);
+            newOperands.add(dfltValOnError);
             Class clazz = method.getDeclaringClass();
             expression = EnumUtils.call(null, clazz, method.getName(), newOperands);
 
@@ -1302,23 +1302,23 @@ public class RexImpTable {
         /** {@inheritDoc} */
         @Override Expression implementSafe(RexToLixTranslator translator,
             RexCall call, List<Expression> argValueList) {
-            final Expression argValue = argValueList.get(0);
+            final Expression argVal = argValueList.get(0);
 
             final Expression e;
             //Special case for implementing unary minus with BigDecimal type
             //for other data type(except BigDecimal) '-' operator is OK, but for
             //BigDecimal, we should call negate method of BigDecimal
-            if (expressionType == ExpressionType.Negate && argValue.type == BigDecimal.class
+            if (expressionType == ExpressionType.Negate && argVal.type == BigDecimal.class
                 && null != backupMethodName)
-                e = Expressions.call(argValue, backupMethodName);
+                e = Expressions.call(argVal, backupMethodName);
             else
-                e = Expressions.makeUnary(expressionType, argValue);
+                e = Expressions.makeUnary(expressionType, argVal);
 
-            if (e.type.equals(argValue.type))
+            if (e.type.equals(argVal.type))
                 return e;
             // Certain unary operators do not preserve type. For example, the "-"
             // operator applied to a "byte" expression returns an "int".
-            return Expressions.convert_(e, argValue.type);
+            return Expressions.convert_(e, argVal.type);
         }
     }
 
@@ -1601,22 +1601,22 @@ public class RexImpTable {
                             false);
                     for (int i = 0; i < argValueList.size(); i++) {
                         Expression key = argValueList.get(i++);
-                        Expression value = argValueList.get(i);
+                        Expression val = argValueList.get(i);
                         blockBuilder.add(
                             Expressions.statement(
                                 Expressions.call(map, BuiltInMethod.MAP_PUT.method,
-                                    Expressions.box(key), Expressions.box(value))));
+                                    Expressions.box(key), Expressions.box(val))));
                     }
                     return map;
                 case ARRAY_VALUE_CONSTRUCTOR:
                     Expression lyst =
                         blockBuilder.append("list", Expressions.new_(ArrayList.class),
                             false);
-                    for (Expression value : argValueList) {
+                    for (Expression val : argValueList) {
                         blockBuilder.add(
                             Expressions.statement(
                                 Expressions.call(lyst, BuiltInMethod.COLLECTION_ADD.method,
-                                    Expressions.box(value))));
+                                    Expressions.box(val))));
                     }
                     return lyst;
                 default:
@@ -1901,17 +1901,17 @@ public class RexImpTable {
             final RexCall call,
             final List<RexToLixTranslator.Result> arguments) {
             final List<Expression> argIsNullList = new ArrayList<>();
-            final List<Expression> argValueList = new ArrayList<>();
+            final List<Expression> argValList = new ArrayList<>();
             for (RexToLixTranslator.Result result : arguments) {
                 argIsNullList.add(result.isNullVariable);
-                argValueList.add(result.valueVariable);
+                argValList.add(result.valueVariable);
             }
             final Expression condition = getCondition(argIsNullList);
-            final ParameterExpression valueVariable =
-                genValueStatement(translator, call, argValueList, condition);
+            final ParameterExpression valVariable =
+                genValueStatement(translator, call, argValList, condition);
             final ParameterExpression isNullVariable =
-                genIsNullStatement(translator, valueVariable);
-            return new RexToLixTranslator.Result(isNullVariable, valueVariable);
+                genIsNullStatement(translator, valVariable);
+            return new RexToLixTranslator.Result(isNullVariable, valVariable);
         }
 
         /** */
@@ -1939,15 +1939,15 @@ public class RexImpTable {
             final RexToLixTranslator translator,
             final RexCall call, final List<Expression> argValueList,
             final Expression condition) {
-            List<Expression> optimizedArgValueList = argValueList;
+            List<Expression> optimizedArgValList = argValueList;
             if (harmonize) {
-                optimizedArgValueList =
-                    harmonize(optimizedArgValueList, translator, call);
+                optimizedArgValList =
+                    harmonize(optimizedArgValList, translator, call);
             }
-            optimizedArgValueList = unboxIfNecessary(optimizedArgValueList);
+            optimizedArgValList = unboxIfNecessary(optimizedArgValList);
 
-            final Expression callValue =
-                implementSafe(translator, call, optimizedArgValueList);
+            final Expression callVal =
+                implementSafe(translator, call, optimizedArgValList);
 
             // In general, RexCall's type is correct for code generation
             // and thus we should ensure the consistency.
@@ -1956,25 +1956,25 @@ public class RexImpTable {
             final SqlOperator op = call.getOperator();
             final Type returnType = translator.typeFactory.getJavaClass(call.getType());
             final boolean noConvert = (returnType == null)
-                || (returnType == callValue.getType())
+                || (returnType == callVal.getType())
                 || (op instanceof SqlTableFunction)
                 || (op instanceof SqlUserDefinedTableMacro)
                 || (op instanceof SqlUserDefinedTableFunction);
-            final Expression convertedCallValue =
+            final Expression convertedCallVal =
                 noConvert
-                    ? callValue
-                    : ConverterUtils.convert(callValue, returnType);
+                    ? callVal
+                    : ConverterUtils.convert(callVal, returnType);
 
-            final Expression valueExpression =
+            final Expression valExpression =
                 Expressions.condition(condition,
-                    getIfTrue(convertedCallValue.getType(), argValueList),
-                    convertedCallValue);
-            final ParameterExpression value =
-                Expressions.parameter(convertedCallValue.getType(),
+                    getIfTrue(convertedCallVal.getType(), argValueList),
+                    convertedCallVal);
+            final ParameterExpression val =
+                Expressions.parameter(convertedCallVal.getType(),
                     translator.getBlockBuilder().newName(getVariableName() + "_value"));
             translator.getBlockBuilder().add(
-                Expressions.declare(Modifier.FINAL, value, valueExpression));
-            return value;
+                Expressions.declare(Modifier.FINAL, val, valExpression));
+            return val;
         }
 
         /** */
@@ -2028,9 +2028,9 @@ public class RexImpTable {
             final Type javaCls =
                 translator.typeFactory.getJavaClass(type);
             final List<Expression> harmonizedArgValues = new ArrayList<>();
-            for (Expression argValue : argValueList) {
+            for (Expression argVal : argValueList) {
                 harmonizedArgValues.add(
-                    EnumUtils.convert(argValue, javaCls));
+                    EnumUtils.convert(argVal, javaCls));
             }
             return harmonizedArgValues;
         }
@@ -2039,18 +2039,18 @@ public class RexImpTable {
          * Under null check, it is safe to unbox the operands before entering the implementor.
          */
         private List<Expression> unboxIfNecessary(final List<Expression> argValueList) {
-            List<Expression> unboxValueList = argValueList;
+            List<Expression> unboxValList = argValueList;
             if (nullPolicy == NullPolicy.STRICT || nullPolicy == NullPolicy.ANY
                 || nullPolicy == NullPolicy.SEMI_STRICT) {
-                unboxValueList = argValueList.stream()
+                unboxValList = argValueList.stream()
                     .map(this::unboxExpression)
                     .collect(Collectors.toList());
             }
             if (nullPolicy == NullPolicy.ARG0 && !argValueList.isEmpty()) {
-                final Expression unboxArg0 = unboxExpression(unboxValueList.get(0));
-                unboxValueList.set(0, unboxArg0);
+                final Expression unboxArg0 = unboxExpression(unboxValList.get(0));
+                unboxValList.set(0, unboxArg0);
             }
-            return unboxValueList;
+            return unboxValList;
         }
 
         /** */
@@ -2110,19 +2110,19 @@ public class RexImpTable {
                     Expressions.condition(hasNull, NULL_EXPR, BOXED_TRUE_EXPR));
             final RexImpTable.NullAs nullAs = translator.isNullable(call)
                 ? RexImpTable.NullAs.NULL : RexImpTable.NullAs.NOT_POSSIBLE;
-            final Expression valueExpression = nullAs.handle(callExpression);
-            final ParameterExpression valueVariable =
-                Expressions.parameter(valueExpression.getType(),
+            final Expression valExpression = nullAs.handle(callExpression);
+            final ParameterExpression valVariable =
+                Expressions.parameter(valExpression.getType(),
                     translator.getBlockBuilder().newName(getVariableName() + "_value"));
-            final Expression isNullExpression = translator.checkNull(valueVariable);
+            final Expression isNullExpression = translator.checkNull(valVariable);
             final ParameterExpression isNullVariable =
                 Expressions.parameter(Boolean.TYPE,
                     translator.getBlockBuilder().newName(getVariableName() + "_isNull"));
             translator.getBlockBuilder().add(
-                Expressions.declare(Modifier.FINAL, valueVariable, valueExpression));
+                Expressions.declare(Modifier.FINAL, valVariable, valExpression));
             translator.getBlockBuilder().add(
                 Expressions.declare(Modifier.FINAL, isNullVariable, isNullExpression));
-            return new RexToLixTranslator.Result(isNullVariable, valueVariable);
+            return new RexToLixTranslator.Result(isNullVariable, valVariable);
         }
 
         /** {@inheritDoc} */
@@ -2164,19 +2164,19 @@ public class RexImpTable {
                     Expressions.condition(hasNull, NULL_EXPR, BOXED_FALSE_EXPR));
             final RexImpTable.NullAs nullAs = translator.isNullable(call)
                 ? RexImpTable.NullAs.NULL : RexImpTable.NullAs.NOT_POSSIBLE;
-            final Expression valueExpression = nullAs.handle(callExpression);
-            final ParameterExpression valueVariable =
-                Expressions.parameter(valueExpression.getType(),
+            final Expression valExpression = nullAs.handle(callExpression);
+            final ParameterExpression valVariable =
+                Expressions.parameter(valExpression.getType(),
                     translator.getBlockBuilder().newName(getVariableName() + "_value"));
-            final Expression isNullExpression = translator.checkNull(valueExpression);
+            final Expression isNullExpression = translator.checkNull(valExpression);
             final ParameterExpression isNullVariable =
                 Expressions.parameter(Boolean.TYPE,
                     translator.getBlockBuilder().newName(getVariableName() + "_isNull"));
             translator.getBlockBuilder().add(
-                Expressions.declare(Modifier.FINAL, valueVariable, valueExpression));
+                Expressions.declare(Modifier.FINAL, valVariable, valExpression));
             translator.getBlockBuilder().add(
                 Expressions.declare(Modifier.FINAL, isNullVariable, isNullExpression));
-            return new RexToLixTranslator.Result(isNullVariable, valueVariable);
+            return new RexToLixTranslator.Result(isNullVariable, valVariable);
         }
 
         /** {@inheritDoc} */
@@ -2224,14 +2224,14 @@ public class RexImpTable {
         /** {@inheritDoc} */
         @Override Expression implementSafe(RexToLixTranslator translator,
             RexCall call, List<Expression> argValueList) {
-            List<Expression> argValueList0 = ConverterUtils.fromInternal(method.getParameterTypes(), argValueList);
+            List<Expression> argValList0 = ConverterUtils.fromInternal(method.getParameterTypes(), argValueList);
             if ((method.getModifiers() & Modifier.STATIC) != 0)
-                return Expressions.call(method, argValueList0);
+                return Expressions.call(method, argValList0);
 
             // The UDF class must have a public zero-args constructor.
             // Assume that the validator checked already.
             final Expression target = Expressions.new_(method.getDeclaringClass());
-            return Expressions.call(target, method, argValueList0);
+            return Expressions.call(target, method, argValList0);
         }
     }
 
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 95ff5d77780..43ed1dbd638 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
@@ -747,9 +747,9 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
                 break;
             default:
                 final Primitive primitive = Primitive.ofBoxOr(javaCls);
-                final Comparable value = literal.getValueAs(Comparable.class);
+                final Comparable val = literal.getValueAs(Comparable.class);
 
-                value2 = primitive != null && value instanceof Number ? primitive.number((Number)value) : value;
+                value2 = primitive != null && val instanceof Number ? primitive.number((Number)val) : val;
         }
         return Expressions.constant(value2, javaCls);
     }
@@ -901,30 +901,30 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
 
         // Generate one line of code to get the input, e.g.,
         // "final Employee current =(Employee) inputEnumerator.current();"
-        final Expression valueExpression = inputGetter.field(
+        final Expression valExpression = inputGetter.field(
             list, inputRef.getIndex(), currentStorageType);
 
         // Generate one line of code for the value of RexInputRef, e.g.,
         // "final Integer input_value = current.commission;"
-        final ParameterExpression valueVariable =
+        final ParameterExpression valVariable =
             Expressions.parameter(
-                valueExpression.getType(), list.newName("input_value"));
-        list.add(Expressions.declare(Modifier.FINAL, valueVariable, valueExpression));
+                valExpression.getType(), list.newName("input_value"));
+        list.add(Expressions.declare(Modifier.FINAL, valVariable, valExpression));
 
         // Generate one line of code to check whether RexInputRef is null, e.g.,
         // "final boolean input_isNull = input_value == null;"
-        final Expression isNullExpression = checkNull(valueVariable);
+        final Expression isNullExpression = checkNull(valVariable);
         final ParameterExpression isNullVariable =
             Expressions.parameter(
                 Boolean.TYPE, list.newName("input_isNull"));
         list.add(Expressions.declare(Modifier.FINAL, isNullVariable, isNullExpression));
 
-        final Result result = new Result(isNullVariable, valueVariable);
+        final Result result = new Result(isNullVariable, valVariable);
 
         // Cache <RexInputRef, currentStorageType>'s result
         rexWithStorageTypeResultMap.put(key, result);
 
-        return new Result(isNullVariable, valueVariable);
+        return new Result(isNullVariable, valVariable);
     }
 
     /** {@inheritDoc} */
@@ -944,15 +944,15 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
 
         // Generate one line of code for the value of RexLiteral, e.g.,
         // "final int literal_value = 10;"
-        final Expression valueExpression = literal.isNull()
+        final Expression valExpression = literal.isNull()
             // Note: even for null literal, we can't loss its type information
             ? getTypedNullLiteral(literal)
             : translateLiteral(literal, literal.getType(),
             typeFactory, RexImpTable.NullAs.NOT_POSSIBLE);
-        final ParameterExpression valueVariable =
-            Expressions.parameter(valueExpression.getType(),
+        final ParameterExpression valVariable =
+            Expressions.parameter(valExpression.getType(),
                 list.newName("literal_value"));
-        list.add(Expressions.declare(Modifier.FINAL, valueVariable, valueExpression));
+        list.add(Expressions.declare(Modifier.FINAL, valVariable, valExpression));
 
         // Generate one line of code to check whether RexLiteral is null, e.g.,
         // "final boolean literal_isNull = false;"
@@ -963,8 +963,8 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
         list.add(Expressions.declare(Modifier.FINAL, isNullVariable, isNullExpression));
 
         // Maintain the map from valueVariable (ParameterExpression) to real Expression
-        literalMap.put(valueVariable, valueExpression);
-        final Result result = new Result(isNullVariable, valueVariable);
+        literalMap.put(valVariable, valExpression);
+        final Result result = new Result(isNullVariable, valVariable);
         // Cache RexLiteral's result
         rexResultMap.put(literal, result);
         return result;
@@ -1068,18 +1068,18 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
      */
     private Result implementCaseWhen(RexCall call) {
         final Type returnType = typeFactory.getJavaClass(call.getType());
-        final ParameterExpression valueVariable =
+        final ParameterExpression valVariable =
             Expressions.parameter(returnType,
                 list.newName("case_when_value"));
-        list.add(Expressions.declare(0, valueVariable, null));
+        list.add(Expressions.declare(0, valVariable, null));
         final List<RexNode> operandList = call.getOperands();
-        implementRecursively(this, operandList, valueVariable, 0);
-        final Expression isNullExpression = checkNull(valueVariable);
+        implementRecursively(this, operandList, valVariable, 0);
+        final Expression isNullExpression = checkNull(valVariable);
         final ParameterExpression isNullVariable =
             Expressions.parameter(
                 Boolean.TYPE, list.newName("case_when_isNull"));
         list.add(Expressions.declare(Modifier.FINAL, isNullVariable, isNullExpression));
-        final Result result = new Result(isNullVariable, valueVariable);
+        final Result result = new Result(isNullVariable, valVariable);
         rexResultMap.put(call, result);
         return result;
     }
@@ -1162,18 +1162,18 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
 
     /** */
     private Result toInnerStorageType(final Result result, final Type storageType) {
-        final Expression valueExpression =
+        final Expression valExpression =
             ConverterUtils.toInternal(result.valueVariable, storageType);
-        if (valueExpression.equals(result.valueVariable))
+        if (valExpression.equals(result.valueVariable))
             return result;
 
-        final ParameterExpression valueVariable =
+        final ParameterExpression valVariable =
             Expressions.parameter(
-                valueExpression.getType(),
+                valExpression.getType(),
                 list.newName(result.valueVariable.name + "_inner_type"));
-        list.add(Expressions.declare(Modifier.FINAL, valueVariable, valueExpression));
+        list.add(Expressions.declare(Modifier.FINAL, valVariable, valExpression));
         final ParameterExpression isNullVariable = result.isNullVariable;
-        return new Result(isNullVariable, valueVariable);
+        return new Result(isNullVariable, valVariable);
     }
 
     /** {@inheritDoc} */
@@ -1190,16 +1190,16 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
         final Expression ctxGet = Expressions.call(root, IgniteMethod.CONTEXT_GET_PARAMETER_VALUE.method(),
             Expressions.constant("?" + dynamicParam.getIndex()), Expressions.constant(paramType));
 
-        final Expression valueExpression = SqlTypeUtil.isDecimal(dynamicParam.getType()) ?
+        final Expression valExpression = SqlTypeUtil.isDecimal(dynamicParam.getType()) ?
             ConverterUtils.convertToDecimal(ctxGet, dynamicParam.getType()) : ConverterUtils.convert(ctxGet, storageType);
 
-        final ParameterExpression valueVariable =
-            Expressions.parameter(valueExpression.getType(), list.newName("value_dynamic_param"));
-        list.add(Expressions.declare(Modifier.FINAL, valueVariable, valueExpression));
+        final ParameterExpression valVariable =
+            Expressions.parameter(valExpression.getType(), list.newName("value_dynamic_param"));
+        list.add(Expressions.declare(Modifier.FINAL, valVariable, valExpression));
         final ParameterExpression isNullVariable =
             Expressions.parameter(Boolean.TYPE, list.newName("isNull_dynamic_param"));
-        list.add(Expressions.declare(Modifier.FINAL, isNullVariable, checkNull(valueVariable)));
-        final Result result = new Result(isNullVariable, valueVariable);
+        list.add(Expressions.declare(Modifier.FINAL, isNullVariable, checkNull(valVariable)));
+        final Result result = new Result(isNullVariable, valVariable);
         rexWithStorageTypeResultMap.put(key, result);
         return result;
     }
@@ -1224,17 +1224,17 @@ public class RexToLixTranslator implements RexVisitor<RexToLixTranslator.Result>
                 final Expression input = getter.field(
                     list, fieldIdx, currentStorageType);
                 final Expression condition = checkNull(input);
-                final ParameterExpression valueVariable =
+                final ParameterExpression valVariable =
                     Expressions.parameter(input.getType(), list.newName("corInp_value"));
-                list.add(Expressions.declare(Modifier.FINAL, valueVariable, input));
+                list.add(Expressions.declare(Modifier.FINAL, valVariable, input));
                 final ParameterExpression isNullVariable =
                     Expressions.parameter(Boolean.TYPE, list.newName("corInp_isNull"));
                 final Expression isNullExpression = Expressions.condition(
                     condition,
                     RexImpTable.TRUE_EXPR,
-                    checkNull(valueVariable));
+                    checkNull(valVariable));
                 list.add(Expressions.declare(Modifier.FINAL, isNullVariable, isNullExpression));
-                final Result result1 = new Result(isNullVariable, valueVariable);
+                final Result result1 = new Result(isNullVariable, valVariable);
                 rexWithStorageTypeResultMap.put(key, result1);
                 return result1;
             default:
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJson.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJson.java
index 7eacd2d8ea5..98597e1d1d6 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJson.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJson.java
@@ -821,9 +821,9 @@ class RelJson {
                 return map;
             case LITERAL:
                 RexLiteral literal = (RexLiteral)node;
-                Object value = literal.getValue3();
+                Object val = literal.getValue3();
                 map = map();
-                map.put("literal", toJson(value));
+                map.put("literal", toJson(val));
                 map.put("type", toJson(node.getType()));
 
                 return map;
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonReader.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonReader.java
index d740af19174..531f9c94e1d 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonReader.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonReader.java
@@ -319,8 +319,8 @@ public class RelJsonReader {
         private ImmutableList<RexLiteral> getTuple(List jsonTuple) {
             ImmutableList.Builder<RexLiteral> builder =
                 ImmutableList.builder();
-            for (Object jsonValue : jsonTuple)
-                builder.add((RexLiteral)relJson.toRex(this, jsonValue));
+            for (Object jsonVal : jsonTuple)
+                builder.add((RexLiteral)relJson.toRex(this, jsonVal));
             return builder.build();
         }
 
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonWriter.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonWriter.java
index 0a2ae5a60c6..e3aaf1e5bd7 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonWriter.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/externalize/RelJsonWriter.java
@@ -136,11 +136,11 @@ public class RelJsonWriter implements RelWriter {
         map.put("id", null); // ensure that id is the first attribute
         map.put("relOp", relJson.classToTypeName(rel.getClass()));
 
-        for (Pair<String, Object> value : values) {
-            if (value.right instanceof RelNode)
+        for (Pair<String, Object> val : values) {
+            if (val.right instanceof RelNode)
                 continue;
 
-            map.put(value.left, relJson.toJson(value.right));
+            map.put(val.left, relJson.toJson(val.right));
         }
         // omit 'inputs: ["3"]' if "3" is the preceding rel
         final List<Object> list = explainInputs(rel.getInputs());
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/IgniteMdCollation.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/IgniteMdCollation.java
index 364afaba798..3dd9e38d3ee 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/IgniteMdCollation.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/metadata/IgniteMdCollation.java
@@ -286,15 +286,15 @@ public class IgniteMdCollation implements MetadataHandler<BuiltInMetadata.Collat
             new ArrayList<>();
         for (Map.Entry<Integer, SqlMonotonicity> entry
             : targetsWithMonotonicity.entrySet()) {
-            final SqlMonotonicity value = entry.getValue();
-            switch (value) {
+            final SqlMonotonicity val = entry.getValue();
+            switch (val) {
                 case NOT_MONOTONIC:
                 case CONSTANT:
                     break;
                 default:
                     fieldCollationsForRexCalls.add(
                         new RelFieldCollation(entry.getKey(),
-                            RelFieldCollation.Direction.of(value)));
+                            RelFieldCollation.Direction.of(val)));
                     break;
             }
         }
diff --git a/modules/checkstyle/src/main/resources/abbrevations.csv b/modules/checkstyle/src/main/resources/abbrevations.csv
index c828e45cb8c..2793cf94a92 100644
--- a/modules/checkstyle/src/main/resources/abbrevations.csv
+++ b/modules/checkstyle/src/main/resources/abbrevations.csv
@@ -73,5 +73,5 @@ subject,subj
 system,sys
 topology,top
 #topologyversion,topVer
-#value,val
+value,val
 version,ver
\ No newline at end of file
diff --git a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/JettyRestProcessorGetAllAsArrayTest.java b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/JettyRestProcessorGetAllAsArrayTest.java
index 582f7a6add3..a58dbf3f4c8 100644
--- a/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/JettyRestProcessorGetAllAsArrayTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/internal/processors/rest/JettyRestProcessorGetAllAsArrayTest.java
@@ -71,12 +71,12 @@ public class JettyRestProcessorGetAllAsArrayTest extends JettyRestProcessorCommo
 
         assertTrue(res.isArray());
 
-        Set<Map<String, String>> returnValue = new HashSet<>();
+        Set<Map<String, String>> returnVal = new HashSet<>();
 
-        returnValue.add(F.asMap("key", "getKey1", "value", "getVal1"));
-        returnValue.add(F.asMap("key", "getKey2", "value", "getVal2"));
+        returnVal.add(F.asMap("key", "getKey1", "value", "getVal1"));
+        returnVal.add(F.asMap("key", "getKey2", "value", "getVal2"));
 
-        assertEquals(returnValue, JSON_MAPPER.treeToValue(res, Set.class));
+        assertEquals(returnVal, JSON_MAPPER.treeToValue(res, Set.class));
     }
 
     /** {@inheritDoc} */
diff --git a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMissingLongArrayResultsTest.java b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMissingLongArrayResultsTest.java
index be619631382..d5dba11fe78 100644
--- a/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMissingLongArrayResultsTest.java
+++ b/modules/clients/src/test/java/org/apache/ignite/jdbc/thin/JdbcThinMissingLongArrayResultsTest.java
@@ -104,7 +104,7 @@ public class JdbcThinMissingLongArrayResultsTest extends JdbcThinAbstractSelfTes
             final int maxBlocks = SAMPLE_SIZE / BLOCK_SIZE;
 
             Key key = new Key();
-            Value value = new Value();
+            Value val = new Value();
             long date = System.nanoTime();
 
             for (int blockId = 0; blockId < maxBlocks; blockId++) {
@@ -130,15 +130,15 @@ public class JdbcThinMissingLongArrayResultsTest extends JdbcThinAbstractSelfTes
                 key.setDate(date);
                 key.setSecurityId(secId);
 
-                value.setTime(time); // BUG  in providing it via JDBC
+                val.setTime(time); // BUG  in providing it via JDBC
 
-                value.setOpen(open);
-                value.setHigh(high);
-                value.setLow(low);
-                value.setClose(close);
-                value.setMarketVWAP(marketVWAP);
+                val.setOpen(open);
+                val.setHigh(high);
+                val.setLow(low);
+                val.setClose(close);
+                val.setMarketVWAP(marketVWAP);
 
-                streamer.addData(key, value);
+                streamer.addData(key, val);
 
                 secId++; // for unique values
                 //secId = RAND.nextInt(1000);
diff --git a/modules/compress/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/SnapshotCompressionBasicTest.java b/modules/compress/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/SnapshotCompressionBasicTest.java
index 133355ac260..9820303e51a 100644
--- a/modules/compress/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/SnapshotCompressionBasicTest.java
+++ b/modules/compress/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/SnapshotCompressionBasicTest.java
@@ -483,9 +483,9 @@ public class SnapshotCompressionBasicTest extends AbstractSnapshotSelfTest {
             if (o == null || getClass() != o.getClass())
                 return false;
 
-            Value value = (Value)o;
+            Value val = (Value)o;
 
-            return Objects.equals(name, value.name);
+            return Objects.equals(name, val.name);
         }
 
         /** {@inheritDoc} */
diff --git a/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/argument/parser/CLIArgumentParser.java b/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/argument/parser/CLIArgumentParser.java
index 0f6b1546e48..ff7f2f84a79 100644
--- a/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/argument/parser/CLIArgumentParser.java
+++ b/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/argument/parser/CLIArgumentParser.java
@@ -86,11 +86,11 @@ public class CLIArgumentParser {
                 if (positionalIdx < positionalArgCfg.size()) {
                     cliArg = positionalArgCfg.get(positionalIdx);
 
-                    Object value = parseVal(arg, cliArg.type());
+                    Object val = parseVal(arg, cliArg.type());
 
-                    ((CLIArgument<Object>)cliArg).validator().accept(cliArg.name(), value);
+                    ((CLIArgument<Object>)cliArg).validator().accept(cliArg.name(), val);
 
-                    parsedPositionalArgs.add(value);
+                    parsedPositionalArgs.add(val);
 
                     positionalIdx++;
                 }
@@ -113,11 +113,11 @@ public class CLIArgumentParser {
                 throw new IllegalArgumentException("Unexpected value: " + strVal);
 
             try {
-                Object value = parseVal(strVal, cliArg.type());
+                Object val = parseVal(strVal, cliArg.type());
 
-                ((CLIArgument<Object>)cliArg).validator().accept(cliArg.name(), value);
+                ((CLIArgument<Object>)cliArg).validator().accept(cliArg.name(), val);
 
-                parsedArgs.put(cliArg.name(), value);
+                parsedArgs.put(cliArg.name(), val);
             }
             catch (IllegalArgumentException e) {
                 throw new IllegalArgumentException("Failed to parse " + cliArg.name() + " command argument. "
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 4f8fdba44cb..b38c9392608 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
@@ -241,13 +241,13 @@ public enum IgniteFeatures {
     public static byte[] allFeatures() {
         final BitSet set = new BitSet();
 
-        for (IgniteFeatures value : IgniteFeatures.values()) {
-            if (value == PME_FREE_SWITCH && getBoolean(IGNITE_PME_FREE_SWITCH_DISABLED))
+        for (IgniteFeatures val : IgniteFeatures.values()) {
+            if (val == PME_FREE_SWITCH && getBoolean(IGNITE_PME_FREE_SWITCH_DISABLED))
                 continue;
 
-            final int featureId = value.getFeatureId();
+            final int featureId = val.getFeatureId();
 
-            assert !set.get(featureId) : "Duplicate feature ID found for [" + value + "] having same ID ["
+            assert !set.get(featureId) : "Duplicate feature ID found for [" + val + "] having same ID ["
                 + featureId + "]";
 
             set.set(featureId);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/management/cache/CacheFindGarbageCommand.java b/modules/core/src/main/java/org/apache/ignite/internal/management/cache/CacheFindGarbageCommand.java
index 57244ef00fb..eb2c6bb36f4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/management/cache/CacheFindGarbageCommand.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/management/cache/CacheFindGarbageCommand.java
@@ -60,9 +60,9 @@ public class CacheFindGarbageCommand
 
             printer.accept("Garbage found on node " + nodeEntry.getKey() + ":");
 
-            FindAndDeleteGarbageInPersistenceJobResult value = nodeEntry.getValue();
+            FindAndDeleteGarbageInPersistenceJobResult val = nodeEntry.getValue();
 
-            Map<Integer, Map<Integer, Long>> grpPartErrorsCnt = value.checkResult();
+            Map<Integer, Map<Integer, Long>> grpPartErrorsCnt = val.checkResult();
 
             if (!grpPartErrorsCnt.isEmpty()) {
                 for (Map.Entry<Integer, Map<Integer, Long>> entry : grpPartErrorsCnt.entrySet()) {
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/management/diagnostic/DiagnosticConnectivityCommand.java b/modules/core/src/main/java/org/apache/ignite/internal/management/diagnostic/DiagnosticConnectivityCommand.java
index 159fe151dcc..62426423baa 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/management/diagnostic/DiagnosticConnectivityCommand.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/management/diagnostic/DiagnosticConnectivityCommand.java
@@ -99,9 +99,9 @@ public class DiagnosticConnectivityCommand
             String consId = key.consistentId().toString();
             String isClient = key.isClient() ? NODE_TYPE_CLIENT : NODE_TYPE_SERVER;
 
-            ConnectivityResult value = entry.getValue();
+            ConnectivityResult val = entry.getValue();
 
-            Map<ClusterNode, Boolean> statuses = value.getNodeIds();
+            Map<ClusterNode, Boolean> statuses = val.getNodeIds();
 
             List<List<String>> row = statuses.entrySet().stream().map(nodeStat -> {
                 ClusterNode remoteNode = nodeStat.getKey();
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 757e4ba4c90..789bbc11a1d 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
@@ -2292,7 +2292,7 @@ public abstract class GridCacheAdapter<K, V> implements IgniteInternalCache<K, V
                 IgniteInternalFuture<GridCacheReturn> fut =
                     tx.invokeAsync(ctx, null, (Map<? extends K, ? extends EntryProcessor<K, V, Object>>)map, args);
 
-                Map<K, EntryProcessorResult<T>> value = fut.get().value();
+                Map<K, EntryProcessorResult<T>> val = fut.get().value();
 
                 if (statsEnabled)
                     metrics0().addInvokeTimeNanos(System.nanoTime() - start);
@@ -2300,7 +2300,7 @@ public abstract class GridCacheAdapter<K, V> implements IgniteInternalCache<K, V
                 if (performanceStatsEnabled)
                     writeStatistics(OperationType.CACHE_INVOKE_ALL, start);
 
-                return value;
+                return val;
             }
         });
     }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/ExponentialBackoff.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/ExponentialBackoff.java
index c684f8bed97..1d00179e2ba 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/ExponentialBackoff.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/pagemem/ExponentialBackoff.java
@@ -68,7 +68,7 @@ class ExponentialBackoff {
      * @return {@code true} iff this backoff was not already in a reset state
      */
     public boolean reset() {
-        int oldValue = exponentialBackoffCounter.getAndSet(0);
-        return oldValue != 0;
+        int oldVal = exponentialBackoffCounter.getAndSet(0);
+        return oldVal != 0;
     }
 }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryHandler.java
index 4118e9bd854..46e6cebc461 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/continuous/CacheContinuousQueryHandler.java
@@ -1616,23 +1616,23 @@ public class CacheContinuousQueryHandler<K, V> implements GridContinuousHandler
 
         EventType type = evt.entry().eventType();
 
-        CacheObject oldValue;
-        CacheObject newValue;
+        CacheObject oldVal;
+        CacheObject newVal;
 
         if (type == EXPIRED || type == REMOVED) {
-            newValue = null;
-            oldValue = cacheObj;
+            newVal = null;
+            oldVal = cacheObj;
         }
         else {
-            newValue = cacheObj;
-            oldValue = null;
+            newVal = cacheObj;
+            oldVal = null;
         }
 
         return new CacheContinuousQueryEntry(evt.entry().cacheId(),
             evt.entry().eventType(),
             null,
-            newValue,
-            oldValue,
+            newVal,
+            oldVal,
             evt.entry().isKeepBinary(),
             evt.entry().partition(),
             evt.entry().updateCounter(),
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/store/GridCacheWriteBehindStore.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/store/GridCacheWriteBehindStore.java
index ae647957cd8..9a24cf10b42 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/store/GridCacheWriteBehindStore.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/store/GridCacheWriteBehindStore.java
@@ -429,39 +429,39 @@ public class GridCacheWriteBehindStore<K, V> implements CacheStore<K, V>, Lifecy
         Collection<K> remaining = null;
 
         for (K key : keys) {
-            StatefulValue<K, V> val;
+            StatefulValue<K, V> statefulVal;
 
             if (writeCoalescing)
-                val = writeCache.get(key);
+                statefulVal = writeCache.get(key);
             else
-                val = flusher(key).flusherWriteMap.get(key);
+                statefulVal = flusher(key).flusherWriteMap.get(key);
 
-            if (val != null) {
-                val.readLock().lock();
+            if (statefulVal != null) {
+                statefulVal.readLock().lock();
 
                 try {
                     StoreOperation op;
 
-                    V value;
+                    V val;
 
-                    if (writeCoalescing && val.nextOperation() != null) {
-                        op = val.nextOperation();
+                    if (writeCoalescing && statefulVal.nextOperation() != null) {
+                        op = statefulVal.nextOperation();
 
-                        value = (op == StoreOperation.PUT) ? val.nextEntry().getValue() : null;
+                        val = (op == StoreOperation.PUT) ? statefulVal.nextEntry().getValue() : null;
                     }
                     else {
-                        op = val.operation();
+                        op = statefulVal.operation();
 
-                        value = (op == StoreOperation.PUT) ? val.entry().getValue() : null;
+                        val = (op == StoreOperation.PUT) ? statefulVal.entry().getValue() : null;
                     }
 
                     if (op == StoreOperation.PUT)
-                        loaded.put(key, value);
+                        loaded.put(key, val);
                     else
                         assert op == StoreOperation.RMV : op;
                 }
                 finally {
-                    val.readLock().unlock();
+                    statefulVal.readLock().unlock();
                 }
             }
             else {
@@ -489,45 +489,45 @@ public class GridCacheWriteBehindStore<K, V> implements CacheStore<K, V>, Lifecy
             log.debug(S.toString("Store load",
                 "key", key, true));
 
-        StatefulValue<K, V> val;
+        StatefulValue<K, V> statefulVal;
 
         if (writeCoalescing)
-            val = writeCache.get(key);
+            statefulVal = writeCache.get(key);
         else
-            val = flusher(key).flusherWriteMap.get(key);
+            statefulVal = flusher(key).flusherWriteMap.get(key);
 
-        if (val != null) {
-            val.readLock().lock();
+        if (statefulVal != null) {
+            statefulVal.readLock().lock();
 
             try {
                 StoreOperation op;
 
-                V value;
+                V val;
 
-                if (writeCoalescing && val.nextOperation() != null) {
-                    op = val.nextOperation();
+                if (writeCoalescing && statefulVal.nextOperation() != null) {
+                    op = statefulVal.nextOperation();
 
-                    value = (op == StoreOperation.PUT) ? val.nextEntry().getValue() : null;
+                    val = (op == StoreOperation.PUT) ? statefulVal.nextEntry().getValue() : null;
                 }
                 else {
-                    op = val.operation();
+                    op = statefulVal.operation();
 
-                    value = (op == StoreOperation.PUT) ? val.entry().getValue() : null;
+                    val = (op == StoreOperation.PUT) ? statefulVal.entry().getValue() : null;
                 }
 
                 switch (op) {
                     case PUT:
-                        return value;
+                        return val;
 
                     case RMV:
                         return null;
 
                     default:
-                        assert false : "Unexpected operation: " + val.status();
+                        assert false : "Unexpected operation: " + statefulVal.status();
                 }
             }
             finally {
-                val.readLock().unlock();
+                statefulVal.readLock().unlock();
             }
         }
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java
index 0f899ee30c8..fa813ee5130 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java
@@ -305,10 +305,10 @@ public class ClusterProcessor extends GridProcessorAdapter implements Distribute
                 "Please try again later.");
 
         if (!metastorage.compareAndSet(CLUSTER_ID_TAG_KEY, oldTag, new ClusterIdAndTag(oldTag.id(), newTag))) {
-            ClusterIdAndTag concurrentValue = metastorage.read(CLUSTER_ID_TAG_KEY);
+            ClusterIdAndTag concurrentVal = metastorage.read(CLUSTER_ID_TAG_KEY);
 
             throw new IgniteCheckedException("Cluster tag has been concurrently updated to different value: " +
-                concurrentValue.tag());
+                concurrentVal.tag());
         }
         else
             cluster.setTag(newTag);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcMessageParser.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcMessageParser.java
index 587e640818a..5a64524cbe4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcMessageParser.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcMessageParser.java
@@ -448,16 +448,16 @@ public class OdbcMessageParser implements ClientListenerMessageParser {
         if (ver.compareTo(OdbcConnectionContext.VER_2_3_2) < 0) {
             long summ = 0;
 
-            for (Long value : affectedRows)
-                summ += value == null ? 0 : value;
+            for (Long val : affectedRows)
+                summ += val == null ? 0 : val;
 
             writer.writeLong(summ);
         }
         else {
             writer.writeInt(affectedRows.length);
 
-            for (long value : affectedRows)
-                writer.writeLong(value);
+            for (long val : affectedRows)
+                writer.writeLong(val);
         }
     }
 }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/websession/PlatformDotNetSessionData.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/websession/PlatformDotNetSessionData.java
index 6c44dbd5e95..aa173a32326 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/websession/PlatformDotNetSessionData.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/websession/PlatformDotNetSessionData.java
@@ -167,10 +167,10 @@ public class PlatformDotNetSessionData implements Binarylizable {
 
         for (Map.Entry<String, byte[]> e : items.entrySet()) {
             String key = e.getKey();
-            byte[] value = e.getValue();
+            byte[] val = e.getValue();
 
-            if (value != null)
-                this.items.put(key, value);
+            if (val != null)
+                this.items.put(key, val);
             else
                 this.items.remove(key);   // Null value indicates removed key.
         }
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/HLL.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/HLL.java
index e099d0e639c..f0e9bc78a17 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/HLL.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/HLL.java
@@ -382,14 +382,14 @@ public class HLL implements Cloneable {
                     if (!sparseOff) {
                         initializeStorage(HLLType.SPARSE);
 
-                        for (final long value : explicitStorage)
-                            addRawSparseProbabilistic(value);
+                        for (final long val : explicitStorage)
+                            addRawSparseProbabilistic(val);
                     }
                     else {
                         initializeStorage(HLLType.FULL);
 
-                        for (final long value : explicitStorage)
-                            addRawProbabilistic(value);
+                        for (final long val : explicitStorage)
+                            addRawProbabilistic(val);
                     }
                     explicitStorage = null;
                 }
@@ -436,10 +436,10 @@ public class HLL implements Cloneable {
         //      lsb(pwMaxMask) = 2^(registerValueInBits) - 2,
         // thus lsb(any_long | pwMaxMask) <= 2^(registerValueInBits) - 2,
         // thus 1 + lsb(any_long | pwMaxMask) <= 2^(registerValueInBits) -1.
-        final long substreamValue = (rawValue >>> log2m);
+        final long substreamVal = (rawValue >>> log2m);
         final byte p_w;
 
-        if (substreamValue == 0L) {
+        if (substreamVal == 0L) {
             // The paper does not cover p(0x0), so the special value 0 is used.
             // 0 is the original initialization value of the registers, so by
             // doing this the multiset simply ignores it. This is acceptable
@@ -447,7 +447,7 @@ public class HLL implements Cloneable {
             p_w = 0;
         }
         else
-            p_w = (byte)(1 + BitUtil.leastSignificantBit(substreamValue | pwMaxMask));
+            p_w = (byte)(1 + BitUtil.leastSignificantBit(substreamVal | pwMaxMask));
 
         // Short-circuit if the register is being set to zero, since algorithmically
         // this corresponds to an "unset" register, and "unset" registers aren't
@@ -731,8 +731,8 @@ public class HLL implements Cloneable {
                         else
                             initializeStorage(HLLType.FULL);
 
-                        for (final long value : other.explicitStorage)
-                            addRaw(value);
+                        for (final long val : other.explicitStorage)
+                            addRaw(val);
                     }
 
                     return;
@@ -749,8 +749,8 @@ public class HLL implements Cloneable {
                         initializeStorage(HLLType.FULL);
 
                         for (final int registerIdx : other.sparseProbabilisticStorage.keySet()) {
-                            final byte registerValue = other.sparseProbabilisticStorage.get(registerIdx);
-                            probabilisticStorage.setMaxRegister(registerIdx, registerValue);
+                            final byte registerVal = other.sparseProbabilisticStorage.get(registerIdx);
+                            probabilisticStorage.setMaxRegister(registerIdx, registerVal);
                         }
                     }
                     return;
@@ -794,8 +794,8 @@ public class HLL implements Cloneable {
                         initializeStorage(HLLType.FULL);
 
                         for (final int registerIdx : other.sparseProbabilisticStorage.keySet()) {
-                            final byte registerValue = other.sparseProbabilisticStorage.get(registerIdx);
-                            probabilisticStorage.setMaxRegister(registerIdx, registerValue);
+                            final byte registerVal = other.sparseProbabilisticStorage.get(registerIdx);
+                            probabilisticStorage.setMaxRegister(registerIdx, registerVal);
                         }
                     }
                 }
@@ -804,8 +804,8 @@ public class HLL implements Cloneable {
                     probabilisticStorage = other.probabilisticStorage.clone();
                 }
 
-                for (final long value : explicitStorage)
-                    addRaw(value);
+                for (final long val : explicitStorage)
+                    addRaw(val);
 
                 explicitStorage = null;
                 return;
@@ -816,8 +816,8 @@ public class HLL implements Cloneable {
                     // dest: SPARSE
                     // Add the raw values from the source to the destination.
 
-                    for (final long value : other.explicitStorage)
-                        addRaw(value);
+                    for (final long val : other.explicitStorage)
+                        addRaw(val);
 
                     // NOTE:  addRaw will handle promotion cleanup
                 }
@@ -833,8 +833,8 @@ public class HLL implements Cloneable {
                     probabilisticStorage = other.probabilisticStorage.clone();
 
                     for (final int registerIdx : sparseProbabilisticStorage.keySet()) {
-                        final byte registerValue = sparseProbabilisticStorage.get(registerIdx);
-                        probabilisticStorage.setMaxRegister(registerIdx, registerValue);
+                        final byte registerVal = sparseProbabilisticStorage.get(registerIdx);
+                        probabilisticStorage.setMaxRegister(registerIdx, registerVal);
                     }
 
                     sparseProbabilisticStorage = null;
@@ -849,8 +849,8 @@ public class HLL implements Cloneable {
                     // Add the raw values from the source to the destination.
                     // Promotion is not possible, so don't bother checking.
 
-                    for (final long value : other.explicitStorage)
-                        addRaw(value);
+                    for (final long val : other.explicitStorage)
+                        addRaw(val);
 
                 }
                 else /*source is HLLType.SPARSE*/ {
@@ -860,8 +860,8 @@ public class HLL implements Cloneable {
                     // Promotion is not possible, so don't bother checking.
 
                     for (final int registerIdx : other.sparseProbabilisticStorage.keySet()) {
-                        final byte registerValue = other.sparseProbabilisticStorage.get(registerIdx);
-                        probabilisticStorage.setMaxRegister(registerIdx, registerValue);
+                        final byte registerVal = other.sparseProbabilisticStorage.get(registerIdx);
+                        probabilisticStorage.setMaxRegister(registerIdx, registerVal);
                     }
                 }
 
@@ -882,18 +882,18 @@ public class HLL implements Cloneable {
                 // union of empty and empty is empty
                 return;
             case EXPLICIT:
-                for (final long value : other.explicitStorage)
-                    addRaw(value);
+                for (final long val : other.explicitStorage)
+                    addRaw(val);
 
                 // NOTE:  #addRaw() will handle promotion, if necessary
                 return;
             case SPARSE:
                 for (final int registerIdx : other.sparseProbabilisticStorage.keySet()) {
-                    final byte registerValue = other.sparseProbabilisticStorage.get(registerIdx);
-                    final byte curRegisterValue = sparseProbabilisticStorage.getOrDefault(registerIdx, (byte)0);
+                    final byte registerVal = other.sparseProbabilisticStorage.get(registerIdx);
+                    final byte curRegisterVal = sparseProbabilisticStorage.getOrDefault(registerIdx, (byte)0);
 
-                    if (registerValue > curRegisterValue)
-                        sparseProbabilisticStorage.put(registerIdx, registerValue);
+                    if (registerVal > curRegisterVal)
+                        sparseProbabilisticStorage.put(registerIdx, registerVal);
                 }
 
                 // promotion, if necessary
@@ -901,8 +901,8 @@ public class HLL implements Cloneable {
                     initializeStorage(HLLType.FULL);
 
                     for (final int registerIdx : sparseProbabilisticStorage.keySet()) {
-                        final byte registerValue = sparseProbabilisticStorage.get(registerIdx);
-                        probabilisticStorage.setMaxRegister(registerIdx, registerValue);
+                        final byte registerVal = sparseProbabilisticStorage.get(registerIdx);
+                        probabilisticStorage.setMaxRegister(registerIdx, registerVal);
                     }
 
                     sparseProbabilisticStorage = null;
@@ -911,8 +911,8 @@ public class HLL implements Cloneable {
                 return;
             case FULL:
                 for (int i = 0; i < m; i++) {
-                    final long registerValue = other.probabilisticStorage.getRegister(i);
-                    probabilisticStorage.setMaxRegister(i, registerValue);
+                    final long registerVal = other.probabilisticStorage.getRegister(i);
+                    probabilisticStorage.setMaxRegister(i, registerVal);
                 }
 
                 return;
@@ -955,8 +955,8 @@ public class HLL implements Cloneable {
                 final long[] values = explicitStorage.stream().mapToLong(Long::longValue).toArray();
                 Arrays.sort(values);
 
-                for (final long value : values)
-                    serializer.writeWord(value);
+                for (final long val : values)
+                    serializer.writeWord(val);
 
                 bytes = serializer.getBytes();
 
@@ -970,9 +970,9 @@ public class HLL implements Cloneable {
                 Arrays.sort(indices);
 
                 for (final int registerIdx : indices) {
-                    final long registerValue = sparseProbabilisticStorage.get(registerIdx);
+                    final long registerVal = sparseProbabilisticStorage.get(registerIdx);
                     // pack index and value into "short word"
-                    final long shortWord = ((registerIdx << regwidth) | registerValue);
+                    final long shortWord = ((registerIdx << regwidth) | registerVal);
                     serializer.writeWord(shortWord);
                 }
 
@@ -1081,11 +1081,11 @@ public class HLL implements Cloneable {
                 //        in the sparse representation.
                 for (int i = 0; i < deserializer.totalWordCount(); i++) {
                     final long shortWord = deserializer.readWord();
-                    final byte registerValue = (byte)(shortWord & hll.valueMask);
+                    final byte registerVal = (byte)(shortWord & hll.valueMask);
 
                     // Only set non-zero registers.
-                    if (registerValue != 0)
-                        hll.sparseProbabilisticStorage.put((int)(shortWord >>> hll.regwidth), registerValue);
+                    if (registerVal != 0)
+                        hll.sparseProbabilisticStorage.put((int)(shortWord >>> hll.regwidth), registerVal);
                 }
 
                 break;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/BigEndianAscendingWordDeserializer.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/BigEndianAscendingWordDeserializer.java
index 452a21b2d5b..faa708dcd70 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/BigEndianAscendingWordDeserializer.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/BigEndianAscendingWordDeserializer.java
@@ -118,7 +118,7 @@ public class BigEndianAscendingWordDeserializer implements IWordDeserializer {
             throw new ArrayIndexOutOfBoundsException("Word out of bounds of backing array.");
 
         // Accumulator
-        long value = 0;
+        long val = 0;
 
         // --------------------------------------------------------------------
         // First byte
@@ -132,11 +132,11 @@ public class BigEndianAscendingWordDeserializer implements IWordDeserializer {
         // Right-align relevant bits of first byte.
         firstByte >>>= (bitsRemainingInFirstByte - bitsToConsumeInFirstByte);
 
-        value |= firstByte;
+        val |= firstByte;
 
         // If the first byte contains the whole word, short-circuit.
         if (firstByteIdx == lastByteIdx)
-            return value;
+            return val;
 
         // --------------------------------------------------------------------
         // Middle bytes
@@ -145,18 +145,18 @@ public class BigEndianAscendingWordDeserializer implements IWordDeserializer {
         for (int i = 0; i < middleByteCnt; i++) {
             final long middleByte = (bytes[firstByteIdx + i + 1] & BYTE_MASK);
             // Push middle byte onto accumulator.
-            value <<= BITS_PER_BYTE;
-            value |= middleByte;
+            val <<= BITS_PER_BYTE;
+            val |= middleByte;
         }
 
         // --------------------------------------------------------------------
         // Last byte
         long lastByte = (bytes[lastByteIdx] & BYTE_MASK);
         lastByte >>= (BITS_PER_BYTE - lastByteBitsToConsume);
-        value <<= lastByteBitsToConsume;
-        value |= lastByte;
+        val <<= lastByteBitsToConsume;
+        val |= lastByte;
 
-        return value;
+        return val;
     }
 
     /* (non-Javadoc)
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SchemaVersionOne.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SchemaVersionOne.java
index 4849985bf20..6830cfae7a7 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SchemaVersionOne.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SchemaVersionOne.java
@@ -63,17 +63,17 @@ public class SchemaVersionOne implements ISchemaVersion {
         final HLLType type = metadata.HLLType();
         final int typeOrdinal = getOrdinal(type);
 
-        final int explicitCutoffValue;
+        final int explicitCutoffVal;
         if (metadata.explicitOff())
-            explicitCutoffValue = EXPLICIT_OFF;
+            explicitCutoffVal = EXPLICIT_OFF;
         else if (metadata.explicitAuto())
-            explicitCutoffValue = EXPLICIT_AUTO;
+            explicitCutoffVal = EXPLICIT_AUTO;
         else
-            explicitCutoffValue = metadata.log2ExplicitCutoff() + 1/*per spec*/;
+            explicitCutoffVal = metadata.log2ExplicitCutoff() + 1/*per spec*/;
 
         bytes[0] = SerializationUtil.packVersionByte(SCHEMA_VERSION, typeOrdinal);
         bytes[1] = SerializationUtil.packParametersByte(metadata.registerWidth(), metadata.registerCountLog2());
-        bytes[2] = SerializationUtil.packCutoffByte(explicitCutoffValue, metadata.sparseEnabled());
+        bytes[2] = SerializationUtil.packCutoffByte(explicitCutoffVal, metadata.sparseEnabled());
     }
 
     /* (non-Javadoc)
@@ -85,10 +85,10 @@ public class SchemaVersionOne implements ISchemaVersion {
         final byte cutoffByte = bytes[2];
 
         final int typeOrdinal = SerializationUtil.typeOrdinal(verByte);
-        final int explicitCutoffValue = SerializationUtil.explicitCutoff(cutoffByte);
-        final boolean explicitOff = (explicitCutoffValue == EXPLICIT_OFF);
-        final boolean explicitAuto = (explicitCutoffValue == EXPLICIT_AUTO);
-        final int log2ExplicitCutoff = (explicitOff || explicitAuto) ? -1/*sentinel*/ : (explicitCutoffValue - 1/*per spec*/);
+        final int explicitCutoffVal = SerializationUtil.explicitCutoff(cutoffByte);
+        final boolean explicitOff = (explicitCutoffVal == EXPLICIT_OFF);
+        final boolean explicitAuto = (explicitCutoffVal == EXPLICIT_AUTO);
+        final int log2ExplicitCutoff = (explicitOff || explicitAuto) ? -1/*sentinel*/ : (explicitCutoffVal - 1/*per spec*/);
 
         return new HLLMetadata(SCHEMA_VERSION,
             getType(typeOrdinal),
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/BitVector.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/BitVector.java
index 6ddbf66d93c..5f01014e4c0 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/BitVector.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/BitVector.java
@@ -228,16 +228,16 @@ public class BitVector implements Cloneable {
         final int bitRemainder = (int)(bitIdx & BITS_PER_WORD_MASK)/*aka (bitIndex % BITS_PER_WORD)*/;
 
         // NOTE:  matches getRegister()
-        final long registerValue;
+        final long registerVal;
         final long words[] = this.words/*for convenience/performance*/;
         if (firstWordIdx == secondWordIdx)
-            registerValue = ((words[firstWordIdx] >>> bitRemainder) & registerMask);
+            registerVal = ((words[firstWordIdx] >>> bitRemainder) & registerMask);
         else /*register spans words*/
-            registerValue = (words[firstWordIdx] >>> bitRemainder)/*no need to mask since at top of word*/
+            registerVal = (words[firstWordIdx] >>> bitRemainder)/*no need to mask since at top of word*/
                 | (words[secondWordIdx] << (BITS_PER_WORD - bitRemainder)) & registerMask;
 
         // determine which is the larger and update as necessary
-        if (value > registerValue) {
+        if (value > registerVal) {
             // NOTE:  matches setRegister()
             if (firstWordIdx == secondWordIdx) {
                 // clear then set
@@ -255,7 +255,7 @@ public class BitVector implements Cloneable {
             }
         } /* else -- the register value is greater (or equal) so nothing needs to be done */
 
-        return (value >= registerValue);
+        return (value >= registerVal);
     }
 
     // ========================================================================
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/HLLUtil.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/HLLUtil.java
index 4e78fa9872e..298b89436d9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/HLLUtil.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/util/HLLUtil.java
@@ -70,12 +70,12 @@ public final class HLLUtil {
     static {
         for (int regWidth = HLL.MINIMUM_REGWIDTH_PARAM; regWidth <= HLL.MAXIMUM_REGWIDTH_PARAM; regWidth++) {
             for (int log2m = HLL.MINIMUM_LOG2M_PARAM; log2m <= HLL.MAXIMUM_LOG2M_PARAM; log2m++) {
-                int maxRegisterValue = (1 << regWidth) - 1;
+                int maxRegisterVal = (1 << regWidth) - 1;
 
                 // Since 1 is added to p(w) in the insertion algorithm, only
                 // (maxRegisterValue - 1) bits are inspected hence the hash
                 // space is one power of two smaller.
-                final int pwBits = (maxRegisterValue - 1);
+                final int pwBits = (maxRegisterVal - 1);
                 final int totalBits = (pwBits + log2m);
                 final double twoToL = Math.pow(2, totalBits);
                 TWO_TO_L[(REG_WIDTH_INDEX_MULTIPLIER * regWidth) + log2m] = twoToL;
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlAnalyzeCommand.java b/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlAnalyzeCommand.java
index 3a05fb18600..9c8f3e4f5df 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlAnalyzeCommand.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/sql/command/SqlAnalyzeCommand.java
@@ -171,8 +171,8 @@ public class SqlAnalyzeCommand extends SqlStatisticsCommands {
         if (map == null)
             return dfltVal;
 
-        String value = map.remove(key);
-        return (value == null) ? dfltVal : Byte.valueOf(value);
+        String val = map.remove(key);
+        return (val == null) ? dfltVal : Byte.valueOf(val);
     }
 
     /**
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/InitializationProtector.java b/modules/core/src/main/java/org/apache/ignite/internal/util/InitializationProtector.java
index 7c501c42486..f4b7dfb2280 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/InitializationProtector.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/InitializationProtector.java
@@ -43,19 +43,19 @@ public class InitializationProtector {
      */
     public <T> T protect(Object protectedKey, Supplier<T> initializedVal,
         IgniteThrowableRunner initializationCode) throws IgniteCheckedException {
-        T value = initializedVal.get();
+        T val = initializedVal.get();
 
-        if (value != null)
-            return value;
+        if (val != null)
+            return val;
 
         Lock lock = stripedLock.getLock(protectedKey.hashCode() % stripedLock.concurrencyLevel());
 
         lock.lock();
         try {
-            value = initializedVal.get();
+            val = initializedVal.get();
 
-            if (value != null)
-                return value;
+            if (val != null)
+                return val;
 
             initializationCode.run();
 
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/tostring/CircularStringBuilder.java b/modules/core/src/main/java/org/apache/ignite/internal/util/tostring/CircularStringBuilder.java
index dc9833aff95..1bd54ba879b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/tostring/CircularStringBuilder.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/tostring/CircularStringBuilder.java
@@ -181,13 +181,13 @@ public class CircularStringBuilder {
     @Override public String toString() {
         // Create a copy, don't share the array
         if (full) {
-            char strValue[] = new char[value.length];
+            char strVal[] = new char[value.length];
             int firstPart = value.length - finishAt - 1;
 
-            System.arraycopy(value, finishAt + 1, strValue, 0, firstPart);
-            System.arraycopy(value, 0, strValue, firstPart, value.length - firstPart);
+            System.arraycopy(value, finishAt + 1, strVal, 0, firstPart);
+            System.arraycopy(value, 0, strVal, firstPart, value.length - firstPart);
 
-            return new String(strValue, 0, strValue.length);
+            return new String(strVal, 0, strVal.length);
         }
         else
             return new String(value, 0, finishAt + 1);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/GridNodeLocalSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/GridNodeLocalSelfTest.java
index d8f89acd398..aa7b0a9fe3a 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/GridNodeLocalSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/GridNodeLocalSelfTest.java
@@ -75,12 +75,12 @@ public class GridNodeLocalSelfTest extends GridCommonAbstractTest {
     @Test
     public void testClearNodeLocalMap() throws Exception {
         final String key = "key";
-        final String value = "value";
+        final String val = "value";
 
         Ignite grid = G.ignite(getTestIgniteInstanceName());
 
         ConcurrentMap<Object, Object> nodeLocMap = grid.cluster().nodeLocalMap();
-        nodeLocMap.put(key, value);
+        nodeLocMap.put(key, val);
 
         assert !nodeLocMap.isEmpty() : "Empty node local map";
         assert nodeLocMap.containsKey(key);
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldExtractionSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldExtractionSelfTest.java
index 94f3c79fc7d..d9ba30c5a03 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldExtractionSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/binary/BinaryFieldExtractionSelfTest.java
@@ -255,8 +255,8 @@ public class BinaryFieldExtractionSelfTest extends GridCommonAbstractTest {
 
         ByteBuffer buf = ByteBuffer.allocate(64);
 
-        for (BigDecimal value : values) {
-            decVal = new DecimalValue(value);
+        for (BigDecimal val : values) {
+            decVal = new DecimalValue(val);
 
             binObj = toBinary(decVal, marsh);
 
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 b906d1c3db4..93dda57a999 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
@@ -5518,9 +5518,9 @@ public class BinaryMarshallerSelfTest extends AbstractBinaryArraysTest {
             if (!(o instanceof Value))
                 return false;
 
-            Value value = (Value)o;
+            Value val = (Value)o;
 
-            return val == value.val;
+            return this.val == val.val;
         }
 
         /** {@inheritDoc} */
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 c178abb77b3..0218587cd9e 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
@@ -6806,9 +6806,9 @@ public abstract class GridCacheAbstractFullApiSelfTest extends GridCacheAbstract
             if (!(o instanceof TestValue))
                 return false;
 
-            TestValue value = (TestValue)o;
+            TestValue val = (TestValue)o;
 
-            if (val != value.val)
+            if (this.val != val.val)
                 return false;
 
             return true;
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 33821d39b08..5f4a7861efb 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
@@ -74,15 +74,15 @@ public abstract class GridCacheMarshallerTxAbstractTest extends GridCommonAbstra
     @Test
     public void testValueMarshallerFail() throws Exception {
         String key = UUID.randomUUID().toString();
-        String value = UUID.randomUUID().toString();
-        String newValue = UUID.randomUUID().toString();
+        String val = UUID.randomUUID().toString();
+        String newVal = UUID.randomUUID().toString();
 
         String key2 = UUID.randomUUID().toString();
-        GridCacheWrongValue1 wrongValue = new GridCacheWrongValue1();
+        GridCacheWrongValue1 wrongVal = new GridCacheWrongValue1();
 
         Transaction tx = grid().transactions().txStart(PESSIMISTIC, REPEATABLE_READ);
         try {
-            grid().cache(DEFAULT_CACHE_NAME).put(key, value);
+            grid().cache(DEFAULT_CACHE_NAME).put(key, val);
 
             tx.commit();
         }
@@ -93,11 +93,11 @@ public abstract class GridCacheMarshallerTxAbstractTest extends GridCommonAbstra
         tx = grid().transactions().txStart(PESSIMISTIC, REPEATABLE_READ);
 
         try {
-            assert value.equals(grid().cache(DEFAULT_CACHE_NAME).get(key));
+            assert val.equals(grid().cache(DEFAULT_CACHE_NAME).get(key));
 
-            grid().cache(DEFAULT_CACHE_NAME).put(key, newValue);
+            grid().cache(DEFAULT_CACHE_NAME).put(key, newVal);
 
-            grid().cache(DEFAULT_CACHE_NAME).put(key2, wrongValue);
+            grid().cache(DEFAULT_CACHE_NAME).put(key2, wrongVal);
 
             tx.commit();
         }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerEvictionSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerEvictionSelfTest.java
index 9287ad3d1d7..92ab4b913c0 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerEvictionSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheTtlManagerEvictionSelfTest.java
@@ -96,9 +96,9 @@ public class GridCacheTtlManagerEvictionSelfTest extends GridCommonAbstractTest
 
             for (int i = 1; i <= ENTRIES_TO_PUT; i++) {
                 String key = "Some test entry key#" + i;
-                String value = "Some test entry value#" + i;
+                String val = "Some test entry value#" + i;
 
-                cache.put(key, value);
+                cache.put(key, val);
             }
 
             if (log.isTraceEnabled())
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInvokeAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInvokeAbstractTest.java
index 25eb0cdfd2e..9277574da3f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInvokeAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheInvokeAbstractTest.java
@@ -356,9 +356,9 @@ public abstract class IgniteCacheInvokeAbstractTest extends IgniteCacheAbstractT
                         entry.remove();
                     }
                     else {
-                        Integer value = entry.getValue() == null ? 0 : entry.getValue();
+                        Integer val = entry.getValue() == null ? 0 : entry.getValue();
 
-                        entry.setValue(++value);
+                        entry.setValue(++val);
                     }
 
                     if (key.startsWith("register_type"))
@@ -381,12 +381,12 @@ public abstract class IgniteCacheInvokeAbstractTest extends IgniteCacheAbstractT
                     assertNull(storeMap.get(keys));
             }
             else {
-                int value = entry.getValue();
+                int val = entry.getValue();
 
-                assertEquals("\"" + key + "' entry has wrong value, exp=1 actl=" + value, 1, value);
+                assertEquals("\"" + key + "' entry has wrong value, exp=1 actl=" + val, 1, val);
 
                 if (cacheStoreFactory() != null)
-                    assertEquals("\"" + key + "' entry has wrong value in cache store, exp=1 actl=" + value,
+                    assertEquals("\"" + key + "' entry has wrong value in cache store, exp=1 actl=" + val,
                         1, (int)storeMap.get(key));
             }
         }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheManyAsyncOperationsTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheManyAsyncOperationsTest.java
index d2098672648..54d2601c300 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheManyAsyncOperationsTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheManyAsyncOperationsTest.java
@@ -115,9 +115,9 @@ public class IgniteCacheManyAsyncOperationsTest extends IgniteCacheAbstractTest
 
             IgniteCache<Integer, BinaryObject> cache = client.cache(DEFAULT_CACHE_NAME).withKeepBinary();
 
-            BinaryObject value = client.binary().builder("TEST").build();
+            BinaryObject val = client.binary().builder("TEST").build();
 
-            cache.put(1, value);
+            cache.put(1, val);
 
             // Start parallel operations to initiate operation retry.
             List<IgniteFuture<Void>> futs = IntStream.range(0, 1000).parallel().mapToObj(i ->
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheObjectPutSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheObjectPutSelfTest.java
index 6fa28779e53..a9bc75aa721 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheObjectPutSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheObjectPutSelfTest.java
@@ -164,9 +164,9 @@ public class IgniteCacheObjectPutSelfTest extends GridCommonAbstractTest {
             if (!(o instanceof TestValue))
                 return false;
 
-            TestValue value = (TestValue)o;
+            TestValue val = (TestValue)o;
 
-            return val == value.val;
+            return this.val == val.val;
         }
 
         /** {@inheritDoc} */
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 b05d3e9e8a6..9cd45a97a21 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
@@ -479,14 +479,14 @@ public class IgniteClusterActivateDeactivateTest extends GridCommonAbstractTest
 
                 for (int j = 0; j < 10; j++) {
                     Integer key = ThreadLocalRandom.current().nextInt(1000);
-                    Integer value = j;
+                    Integer val = j;
 
                     if (state == ACTIVE)
                         cache.put(key, j);
                     else
-                        assertThrowsWithCause(() -> cache.put(key, value), IgniteClusterReadOnlyException.class);
+                        assertThrowsWithCause(() -> cache.put(key, val), IgniteClusterReadOnlyException.class);
 
-                    assertEquals(state == ACTIVE ? value : null, cache.get(key));
+                    assertEquals(state == ACTIVE ? val : null, cache.get(key));
                 }
             }
         }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheAtomicReferenceApiSelfAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheAtomicReferenceApiSelfAbstractTest.java
index 680d8ccb3b8..171cad41938 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheAtomicReferenceApiSelfAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheAtomicReferenceApiSelfAbstractTest.java
@@ -162,16 +162,16 @@ public abstract class GridCacheAtomicReferenceApiSelfAbstractTest extends Ignite
         try {
             String atomicName = UUID.randomUUID().toString();
 
-            String initValue = "qazwsx";
+            String initVal = "qazwsx";
 
-            IgniteAtomicReference<String> atomicRef = ignite.atomicReference(atomicName, initValue, true);
+            IgniteAtomicReference<String> atomicRef = ignite.atomicReference(atomicName, initVal, true);
 
             try (Transaction tx = ignite.transactions().txStart()) {
                 cache.put(1, 1);
 
-                assertEquals(initValue, atomicRef.get());
+                assertEquals(initVal, atomicRef.get());
 
-                assertTrue(atomicRef.compareAndSet(initValue, "aaa"));
+                assertTrue(atomicRef.compareAndSet(initVal, "aaa"));
 
                 assertEquals("aaa", atomicRef.get());
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheQueueClientDisconnectTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheQueueClientDisconnectTest.java
index d9d7560de6b..627810ac2eb 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheQueueClientDisconnectTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheQueueClientDisconnectTest.java
@@ -84,7 +84,7 @@ public class GridCacheQueueClientDisconnectTest extends GridCommonAbstractTest {
             GridTestUtils.runAsync(new Runnable() {
                 @Override public void run() {
                     try {
-                        Object value = queue.take();
+                        Object val = queue.take();
                     }
                     catch (IgniteClientDisconnectedException icd) {
                         latch.countDown();
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/IgniteCacheStartWithLoadTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/IgniteCacheStartWithLoadTest.java
index 9e8d9c6a93d..450142b266f 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/IgniteCacheStartWithLoadTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/dht/IgniteCacheStartWithLoadTest.java
@@ -101,9 +101,9 @@ public class IgniteCacheStartWithLoadTest extends GridCommonAbstractTest {
                 try (Transaction tx = node.transactions().txStart(PESSIMISTIC, REPEATABLE_READ)) {
                     for (int it = 0; it < keys; it++) {
                         int key = rnd.nextInt(keysSpace);
-                        byte[] value = new byte[2048];
+                        byte[] val = new byte[2048];
 
-                        cache.put(key, value);
+                        cache.put(key, val);
                     }
                     tx.commit();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearClientHitTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearClientHitTest.java
index 4170e986866..e20282d5537 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearClientHitTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/near/GridCacheNearClientHitTest.java
@@ -94,31 +94,31 @@ public class GridCacheNearClientHitTest extends GridCommonAbstractTest {
 
             cache.put(remoteKey, remoteKey);
 
-            Object value = nearCache.localPeek(remoteKey, NEAR);
+            Object val = nearCache.localPeek(remoteKey, NEAR);
 
-            assertNull("The value should not be loaded from a remote node.", value);
+            assertNull("The value should not be loaded from a remote node.", val);
 
             nearCache.get(remoteKey);
 
-            value = nearCache.localPeek(remoteKey, NEAR);
+            val = nearCache.localPeek(remoteKey, NEAR);
 
-            assertNotNull("The returned value should not be null.", value);
+            assertNotNull("The returned value should not be null.", val);
 
             srvNode.close();
 
             awaitPartitionMapExchange();
 
-            value = nearCache.localPeek(remoteKey, NEAR);
+            val = nearCache.localPeek(remoteKey, NEAR);
 
-            assertNull("The value should not be loaded from a remote node.", value);
+            assertNull("The value should not be loaded from a remote node.", val);
 
-            value = nearCache.get(remoteKey);
+            val = nearCache.get(remoteKey);
 
-            assertNotNull("The value should be loaded from a remote node.", value);
+            assertNotNull("The value should be loaded from a remote node.", val);
 
-            value = nearCache.localPeek(remoteKey, NEAR);
+            val = nearCache.localPeek(remoteKey, NEAR);
 
-            assertNotNull("The returned value should not be null.", value);
+            assertNotNull("The returned value should not be null.", val);
         }
         finally {
             stopAllGrids();
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRabalancingDelayedPartitionMapExchangeSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRabalancingDelayedPartitionMapExchangeSelfTest.java
index e988d1d1c5c..b83b5309c9b 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRabalancingDelayedPartitionMapExchangeSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/rebalancing/GridCacheRabalancingDelayedPartitionMapExchangeSelfTest.java
@@ -90,7 +90,7 @@ public class GridCacheRabalancingDelayedPartitionMapExchangeSelfTest extends Gri
 
                 assert !replay.get() : "Record of message is not allowed after replay";
 
-                Runnable prevValue = rs.putIfAbsent(node.id(), new Runnable() {
+                Runnable prevVal = rs.putIfAbsent(node.id(), new Runnable() {
                     @Override public void run() {
                         if (log.isDebugEnabled())
                             log.debug("Replay: " + msg);
@@ -99,7 +99,7 @@ public class GridCacheRabalancingDelayedPartitionMapExchangeSelfTest extends Gri
                     }
                 });
 
-                assert prevValue == null : "Duplicate message registered to [" + node.id() + "]";
+                assert prevVal == null : "Duplicate message registered to [" + node.id() + "]";
             }
             else
                 try {
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsCacheRebalancingAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsCacheRebalancingAbstractTest.java
index c4d8aeff1db..95f889ac256 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsCacheRebalancingAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/IgnitePdsCacheRebalancingAbstractTest.java
@@ -701,10 +701,10 @@ public abstract class IgnitePdsCacheRebalancingAbstractTest extends GridCommonAb
         IgniteCache<Integer, TestValue> cacheInMem = ignite0.cache(INDEXED_CACHE_IN_MEMORY);
 
         for (int i = 0; i < entriesCnt / 2; i++) {
-            TestValue value = new TestValue(i, i * 2, i * 3);
+            TestValue val = new TestValue(i, i * 2, i * 3);
 
-            cachePds.put(i, value);
-            cacheInMem.put(i, value);
+            cachePds.put(i, val);
+            cacheInMem.put(i, val);
         }
 
         forceCheckpoint();
@@ -712,10 +712,10 @@ public abstract class IgnitePdsCacheRebalancingAbstractTest extends GridCommonAb
         stopGrid(1);
 
         for (int i = entriesCnt / 2; i < entriesCnt; i++) {
-            TestValue value = new TestValue(i, i * 2, i * 3);
+            TestValue val = new TestValue(i, i * 2, i * 3);
 
-            cachePds.put(i, value);
-            cacheInMem.put(i, value);
+            cachePds.put(i, val);
+            cacheInMem.put(i, val);
         }
 
         IgniteEx ignite1 = startGrid(1);
@@ -731,10 +731,10 @@ public abstract class IgnitePdsCacheRebalancingAbstractTest extends GridCommonAb
         assertEquals(entriesCnt, cacheInMem1.localSize(peekAll));
 
         for (int i = 0; i < entriesCnt; i++) {
-            TestValue value = new TestValue(i, i * 2, i * 3);
+            TestValue val = new TestValue(i, i * 2, i * 3);
 
-            assertEquals(value, cachePds1.localPeek(i, peekAll));
-            assertEquals(value, cacheInMem1.localPeek(i, peekAll));
+            assertEquals(val, cachePds1.localPeek(i, peekAll));
+            assertEquals(val, cacheInMem1.localPeek(i, peekAll));
         }
     }
 
@@ -773,11 +773,11 @@ public abstract class IgnitePdsCacheRebalancingAbstractTest extends GridCommonAb
 
             if (o == null || getClass() != o.getClass()) return false;
 
-            TestValue testValue = (TestValue)o;
+            TestValue testVal = (TestValue)o;
 
-            return order == testValue.order &&
-                v1 == testValue.v1 &&
-                v2 == testValue.v2;
+            return order == testVal.order &&
+                v1 == testVal.v1 &&
+                v2 == testVal.v2;
         }
 
         /** {@inheritDoc} */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgniteLogicalRecoveryTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgniteLogicalRecoveryTest.java
index 20cd5dc67c3..33de3a09ece 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgniteLogicalRecoveryTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgniteLogicalRecoveryTest.java
@@ -649,10 +649,10 @@ public class IgniteLogicalRecoveryTest extends GridCommonAbstractTest {
             if (o == null || getClass() != o.getClass())
                 return false;
 
-            TestValue testValue = (TestValue)o;
+            TestValue testVal = (TestValue)o;
 
-            return indexedField == testValue.indexedField &&
-                Arrays.equals(payload, testValue.payload);
+            return indexedField == testVal.indexedField &&
+                Arrays.equals(payload, testVal.payload);
         }
 
         /** {@inheritDoc} */
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 b5afddf5d67..1ac9d70e70d 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
@@ -515,9 +515,9 @@ public class IgnitePdsCacheWalDisabledOnRebalancingTest extends GridCommonAbstra
         String cacheName = cache.getName();
 
         for (int i = 0; i < size; i++) {
-            String value = (String)cache.get(i);
+            String val = (String)cache.get(i);
 
-            assertEquals(generatingFunc.apply(cacheName, i), value);
+            assertEquals(generatingFunc.apply(cacheName, i), val);
         }
     }
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
index 57548f62be0..12a3c842664 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
@@ -116,14 +116,14 @@ public class IgnitePdsThreadInterruptionTest extends GridCommonAbstractTest {
 
         int keyCnt = 10_000;
 
-        byte[] value = new byte[8_192];
+        byte[] val = new byte[8_192];
 
         // Load data.
         try (IgniteDataStreamer<Integer, byte[]> st = ignite.dataStreamer(DEFAULT_CACHE_NAME)) {
             st.allowOverwrite(true);
 
             for (int i = 0; i < keyCnt; i++)
-                st.addData(i, value);
+                st.addData(i, val);
         }
 
         IgniteCache<Integer, byte[]> cache = ignite.cache(DEFAULT_CACHE_NAME);
@@ -170,7 +170,7 @@ public class IgnitePdsThreadInterruptionTest extends GridCommonAbstractTest {
         assertThat(readThreadsError, empty());
 
         for (int i = 0; i < keyCnt; i++)
-            assertArrayEquals(String.valueOf(i), cache.get(i), value);
+            assertArrayEquals(String.valueOf(i), cache.get(i), val);
     }
 
     /**
@@ -192,7 +192,7 @@ public class IgnitePdsThreadInterruptionTest extends GridCommonAbstractTest {
 
         AtomicBoolean stop = new AtomicBoolean();
 
-        byte[] value = new byte[8_192];
+        byte[] val = new byte[8_192];
 
         Thread[] workers = new Thread[THREADS_CNT];
 
@@ -202,7 +202,7 @@ public class IgnitePdsThreadInterruptionTest extends GridCommonAbstractTest {
                     while (!stop.get()) {
                         int key = ThreadLocalRandom.current().nextInt(100_000);
 
-                        cache.put(key, value);
+                        cache.put(key, val);
 
                         keysToCheck.add(key);
                     }
@@ -235,6 +235,6 @@ public class IgnitePdsThreadInterruptionTest extends GridCommonAbstractTest {
 
         // Post check.
         for (Integer key: keysToCheck)
-            assertArrayEquals(String.valueOf(key), value, cache.get(key));
+            assertArrayEquals(String.valueOf(key), val, cache.get(key));
     }
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/IgniteCacheQueryCacheDestroySelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/IgniteCacheQueryCacheDestroySelfTest.java
index c7590e54696..6f14bfbff80 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/IgniteCacheQueryCacheDestroySelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/query/IgniteCacheQueryCacheDestroySelfTest.java
@@ -119,9 +119,9 @@ public class IgniteCacheQueryCacheDestroySelfTest extends GridCommonAbstractTest
 
             try (QueryCursor cursor = example.query(scanQry)) {
                 for (Object p : cursor) {
-                    String value = (String)((Cache.Entry)p).getValue();
+                    String val = (String)((Cache.Entry)p).getValue();
 
-                    assertNotNull(value);
+                    assertNotNull(val);
                 }
             }
         }
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorageTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorageTest.java
index 63110f68c89..49f576ef603 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorageTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorageTest.java
@@ -166,7 +166,7 @@ public class DistributedMetaStorageTest extends GridCommonAbstractTest {
         String clientName = "client0";
 
         String key = "key";
-        String value = "value";
+        String val = "value";
 
         GridTestUtils.runAsync(() -> startClientGrid(clientName));
 
@@ -193,7 +193,7 @@ public class DistributedMetaStorageTest extends GridCommonAbstractTest {
 
         GridTestUtils.assertThrows(null, new Callable<Object>() {
             @Override public Object call() throws Exception {
-                clDms.write(key, value);
+                clDms.write(key, val);
 
                 return null;
             }
diff --git a/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilter.java b/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilter.java
index 17d564af549..8740802ece8 100644
--- a/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilter.java
+++ b/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilter.java
@@ -180,13 +180,13 @@ public class PlatformCacheEntryEventFilter implements CacheEntryEventSerializabl
         assert Integer.valueOf(1).equals(((BinaryObject)objArr[0]).field("Int"));
         assert "2".equals(((BinaryObject)objArr[0]).field("String"));
 
-        Object value = event.getValue();
+        Object val = event.getValue();
 
-        if (value instanceof String)
-            return ((String)value).startsWith(startsWith);
+        if (val instanceof String)
+            return ((String)val).startsWith(startsWith);
 
-        assert value instanceof BinaryObject;
+        assert val instanceof BinaryObject;
 
-        return ((String)((BinaryObject)value).field("String")).startsWith(startsWith);
+        return ((String)((BinaryObject)val).field("String")).startsWith(startsWith);
     }
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterCpp.java b/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterCpp.java
index dc78d3575ed..4bfa63c8d84 100644
--- a/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterCpp.java
+++ b/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterCpp.java
@@ -110,13 +110,13 @@ public class PlatformCacheEntryEventFilterCpp implements CacheEntryEventSerializ
         assert Integer.valueOf(1).equals(objField.field("i32Field"));
         assert "2".equals(objField.field("strField"));
 
-        Object value = event.getValue();
+        Object val = event.getValue();
 
-        if (value instanceof String)
-            return ((String)value).startsWith(startsWith);
+        if (val instanceof String)
+            return ((String)val).startsWith(startsWith);
 
-        assert value instanceof BinaryObject;
+        assert val instanceof BinaryObject;
 
-        return ((String)((BinaryObject)value).field("String")).startsWith(startsWith);
+        return ((String)((BinaryObject)val).field("String")).startsWith(startsWith);
     }
 }
diff --git a/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterFactory.java b/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterFactory.java
index 9711d8003b6..64d94c644c7 100644
--- a/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterFactory.java
+++ b/modules/core/src/test/java/org/apache/ignite/platform/PlatformCacheEntryEventFilterFactory.java
@@ -43,14 +43,14 @@ public class PlatformCacheEntryEventFilterFactory implements Serializable,
 
         return new CacheEntryEventSerializableFilter() {
             @Override public boolean evaluate(CacheEntryEvent event) throws CacheEntryListenerException {
-                Object value = event.getValue();
+                Object val = event.getValue();
 
-                if (value instanceof String)
-                    return ((String)value).startsWith(startsWith);
+                if (val instanceof String)
+                    return ((String)val).startsWith(startsWith);
 
-                assert value instanceof BinaryObject;
+                assert val instanceof BinaryObject;
 
-                return ((String)((BinaryObject)value).field("String")).startsWith(startsWith);
+                return ((String)((BinaryObject)val).field("String")).startsWith(startsWith);
             }
         };
     }
diff --git a/modules/core/src/test/java/org/apache/ignite/platform/PlatformProcessUtils.java b/modules/core/src/test/java/org/apache/ignite/platform/PlatformProcessUtils.java
index b25ca06e440..375ccda076e 100644
--- a/modules/core/src/test/java/org/apache/ignite/platform/PlatformProcessUtils.java
+++ b/modules/core/src/test/java/org/apache/ignite/platform/PlatformProcessUtils.java
@@ -104,12 +104,12 @@ public class PlatformProcessUtils {
             }
 
             if (!process.isAlive()) {
-                int exitValue = process.exitValue();
+                int exitVal = process.exitValue();
                 process = null;
 
                 String logStr = String.join(System.lineSeparator(), log);
 
-                throw new Exception("Process has exited unexpectedly (" + exitValue + "): " + logStr);
+                throw new Exception("Process has exited unexpectedly (" + exitVal + "): " + logStr);
             }
         }
 
diff --git a/modules/core/src/test/java/org/apache/ignite/platform/model/Value.java b/modules/core/src/test/java/org/apache/ignite/platform/model/Value.java
index 7143bff97cc..0cd96f5f5f2 100644
--- a/modules/core/src/test/java/org/apache/ignite/platform/model/Value.java
+++ b/modules/core/src/test/java/org/apache/ignite/platform/model/Value.java
@@ -40,8 +40,8 @@ public class Value {
             return true;
         if (o == null || getClass() != o.getClass())
             return false;
-        Value value = (Value)o;
-        return Objects.equals(val, value.val);
+        Value val = (Value)o;
+        return Objects.equals(this.val, val.val);
     }
 
     /** {@inheritDoc} */
diff --git a/modules/core/src/test/java/org/apache/ignite/stream/socket/SocketStreamerSelfTest.java b/modules/core/src/test/java/org/apache/ignite/stream/socket/SocketStreamerSelfTest.java
index 220571e4d05..75ead89642f 100644
--- a/modules/core/src/test/java/org/apache/ignite/stream/socket/SocketStreamerSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/stream/socket/SocketStreamerSelfTest.java
@@ -294,8 +294,8 @@ public class SocketStreamerSelfTest extends GridCommonAbstractTest {
                 sockStmr.setMultipleTupleExtractor(new StreamMultipleTupleExtractor<Message, Integer, String>() {
                     @Override public Map<Integer, String> extract(Message msg) {
                         Map<Integer, String> answer = new HashMap<>();
-                        for (int value : msg.values) {
-                            answer.put(value, Integer.toString(value));
+                        for (int val : msg.values) {
+                            answer.put(val, Integer.toString(val));
                         }
                         return answer;
                     }
diff --git a/modules/core/src/test/java/org/apache/ignite/testframework/wal/record/RecordUtils.java b/modules/core/src/test/java/org/apache/ignite/testframework/wal/record/RecordUtils.java
index 00c88ebc06f..92d2a2a41a3 100644
--- a/modules/core/src/test/java/org/apache/ignite/testframework/wal/record/RecordUtils.java
+++ b/modules/core/src/test/java/org/apache/ignite/testframework/wal/record/RecordUtils.java
@@ -533,9 +533,9 @@ public class RecordUtils {
 
     /** **/
     public static MetastoreDataRecord buildMetastoreDataRecord() {
-        byte[] value = {1, 3, 5};
+        byte[] val = {1, 3, 5};
 
-        return new MetastoreDataRecord("key", value);
+        return new MetastoreDataRecord("key", val);
     }
 
     /** **/
diff --git a/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/DataEntryWrapper.java b/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/DataEntryWrapper.java
index dfdc26ba40b..d63c198e392 100644
--- a/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/DataEntryWrapper.java
+++ b/modules/dev-utils/src/main/java/org/apache/ignite/development/utils/DataEntryWrapper.java
@@ -77,28 +77,28 @@ class DataEntryWrapper extends DataEntry {
     /** {@inheritDoc} */
     @Override public String toString() {
         final String keyStr;
-        final String valueStr;
+        final String valStr;
         if (source instanceof UnwrapDataEntry) {
             final UnwrapDataEntry unwrappedDataEntry = (UnwrapDataEntry)this.source;
 
             keyStr = toString(unwrappedDataEntry.unwrappedKey(), this.source.key());
 
-            valueStr = toString(unwrappedDataEntry.unwrappedValue(), this.source.value());
+            valStr = toString(unwrappedDataEntry.unwrappedValue(), this.source.value());
         }
         else if (source instanceof RecordDataV1Serializer.EncryptedDataEntry) {
             keyStr = "<encrypted>";
 
-            valueStr = "<encrypted>";
+            valStr = "<encrypted>";
         }
         else {
             keyStr = toString(null, this.source.key());
 
-            valueStr = toString(null, this.source.value());
+            valStr = toString(null, this.source.value());
         }
 
         return new SB(this.source.getClass().getSimpleName())
             .a("[k = ").a(keyStr)
-            .a(", v = [").a(valueStr).a("]")
+            .a(", v = [").a(valStr).a("]")
             .a(", super = [").a(S.toString(DataEntry.class, source)).a("]]")
             .toString();
     }
diff --git a/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterSensitiveDataTest.java b/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterSensitiveDataTest.java
index 75ed5432fa6..866b5087e9b 100644
--- a/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterSensitiveDataTest.java
+++ b/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterSensitiveDataTest.java
@@ -258,11 +258,11 @@ public class IgniteWalConverterSensitiveDataTest extends GridCommonAbstractTest
         else
             assertNotContains(log, testOutStr, SENSITIVE_DATA_VALUE_PREFIX);
 
-        for (String sensitiveDataValue : sensitiveValues) {
+        for (String sensitiveDataVal : sensitiveValues) {
             if (containsData)
-                assertContains(log, testOutStr, converter.apply(sensitiveDataValue));
+                assertContains(log, testOutStr, converter.apply(sensitiveDataVal));
             else
-                assertNotContains(log, testOutStr, converter.apply(sensitiveDataValue));
+                assertNotContains(log, testOutStr, converter.apply(sensitiveDataVal));
         }
     }
 
diff --git a/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterTest.java b/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterTest.java
index dd38c76bf61..be7e8e47bcb 100644
--- a/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterTest.java
+++ b/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterTest.java
@@ -265,9 +265,9 @@ public class IgniteWalConverterTest extends GridCommonAbstractTest {
                     idx = result.indexOf("]", start);
 
                     if (idx > 0) {
-                        final String value = result.substring(start, idx);
+                        final String val = result.substring(start, idx);
 
-                        find = new String(Base64.getDecoder().decode(value)).contains(person.getName());
+                        find = new String(Base64.getDecoder().decode(val)).contains(person.getName());
                     }
                 }
             }
@@ -586,16 +586,16 @@ public class IgniteWalConverterTest extends GridCommonAbstractTest {
             for (int i = 0; i < 10; i++) {
                 final PersonKey key = new PersonKey(i);
 
-                final Person value;
+                final Person val;
 
                 if (i % 2 == 0)
-                    value = new Person(i, PERSON_NAME_PREFIX + i);
+                    val = new Person(i, PERSON_NAME_PREFIX + i);
                 else
-                    value = new PersonEx(i, PERSON_NAME_PREFIX + i, "Additional information " + i, "Description " + i);
+                    val = new PersonEx(i, PERSON_NAME_PREFIX + i, "Additional information " + i, "Description " + i);
 
-                cache.put(key, value);
+                cache.put(key, val);
 
-                list.add(value);
+                list.add(val);
             }
 
             if (afterPopulateConsumer != null)
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2IndexBase.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2IndexBase.java
index 6cbd7ae325e..18213d0ae9d 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2IndexBase.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2IndexBase.java
@@ -182,11 +182,11 @@ public abstract class GridH2IndexBase extends H2IndexCostedBase {
 
         CacheObject key;
 
-        final Value keyColValue = row.getValue(QueryUtils.KEY_COL);
+        final Value keyColVal = row.getValue(QueryUtils.KEY_COL);
 
-        assert keyColValue != null;
+        assert keyColVal != null;
 
-        final Object o = keyColValue.getObject();
+        final Object o = keyColVal.getObject();
 
         if (o instanceof CacheObject)
             key = (CacheObject)o;
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/H2IndexCostedBase.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/H2IndexCostedBase.java
index 0792fa1e878..1b2d5e5749c 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/H2IndexCostedBase.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/H2IndexCostedBase.java
@@ -131,8 +131,8 @@ public abstract class H2IndexCostedBase extends BaseIndex {
                         break;
                     }
                     // Estimate by is null
-                    Value equalValue = getEqualValue(ses, column, filter);
-                    Boolean equalNull = (equalValue == null) ? null : equalValue.getType() == Value.NULL;
+                    Value equalVal = getEqualValue(ses, column, filter);
+                    Boolean equalNull = (equalVal == null) ? null : equalVal.getType() == Value.NULL;
                     rowCount = getColumnSize(colStats, rowCount, equalNull);
 
                     if (colStats != null && equalNull == Boolean.TRUE) {
@@ -223,7 +223,7 @@ public abstract class H2IndexCostedBase extends BaseIndex {
      * @return "Equal" value or {@code null} if there are no equal clause with constant expression.
      */
     private Value getEqualValue(Session ses, Column column, TableFilter filter) {
-        Value maxValue = null;
+        Value maxVal = null;
         for (IndexCondition cond : filter.getIndexConditions()) {
             if (!column.equals(cond.getColumn()))
                 continue;
@@ -233,12 +233,12 @@ public abstract class H2IndexCostedBase extends BaseIndex {
                 Expression expr = cond.getExpression();
                 if (expr != null && expr.isConstant()) {
                     Value curVal = cond.getCurrentValue(ses);
-                    if (null == maxValue || (curVal != null || filter.getTable().compareTypeSafe(curVal, maxValue) < 0))
-                        maxValue = curVal;
+                    if (null == maxVal || (curVal != null || filter.getTable().compareTypeSafe(curVal, maxVal) < 0))
+                        maxVal = curVal;
                 }
             }
         }
-        return maxValue;
+        return maxVal;
     }
 
     /**
@@ -252,7 +252,7 @@ public abstract class H2IndexCostedBase extends BaseIndex {
     private Value getStartValue(Session ses, Column column, TableFilter filter) {
         if (filter == null)
             return null;
-        Value maxValue = null;
+        Value maxVal = null;
         for (IndexCondition cond : filter.getIndexConditions()) {
             if (!column.equals(cond.getColumn()))
                 continue;
@@ -264,12 +264,12 @@ public abstract class H2IndexCostedBase extends BaseIndex {
                 Expression expr = cond.getExpression();
                 if (expr != null && expr.isConstant()) {
                     Value curVal = cond.getCurrentValue(ses);
-                    if (null == maxValue || (curVal != null || filter.getTable().compareTypeSafe(curVal, maxValue) < 0))
-                        maxValue = curVal;
+                    if (null == maxVal || (curVal != null || filter.getTable().compareTypeSafe(curVal, maxVal) < 0))
+                        maxVal = curVal;
                 }
             }
         }
-        return maxValue;
+        return maxVal;
     }
 
     /**
@@ -283,7 +283,7 @@ public abstract class H2IndexCostedBase extends BaseIndex {
     private Value getEndValue(Session ses, Column column, TableFilter filter) {
         if (filter == null)
             return null;
-        Value minValue = null;
+        Value minVal = null;
         for (IndexCondition cond : filter.getIndexConditions()) {
             if (!column.equals(cond.getColumn()))
                 continue;
@@ -294,12 +294,12 @@ public abstract class H2IndexCostedBase extends BaseIndex {
                 Expression expr = cond.getExpression();
                 if (expr != null && expr.isConstant()) {
                     Value curVal = cond.getCurrentValue(ses);
-                    if (null == minValue || (curVal != null || filter.getTable().compareTypeSafe(minValue, curVal) < 0))
-                        minValue = curVal;
+                    if (null == minVal || (curVal != null || filter.getTable().compareTypeSafe(minVal, curVal) < 0))
+                        minVal = curVal;
                 }
             }
         }
-        return minValue;
+        return minVal;
     }
 
     /**
@@ -368,10 +368,10 @@ public abstract class H2IndexCostedBase extends BaseIndex {
             // Fall back to previous behaviour without statistics, even without min/max testing
             return estimatePercentFallback(min, max);
 
-        BigDecimal minValue = (min == null) ? null : getComparableValue(min);
-        BigDecimal maxValue = (max == null) ? null : getComparableValue(max);
+        BigDecimal minVal = (min == null) ? null : getComparableValue(min);
+        BigDecimal maxVal = (max == null) ? null : getComparableValue(max);
 
-        if (minValue == null && maxValue == null)
+        if (minVal == null && maxVal == null)
             return estimatePercentFallback(min, max);
 
         BigDecimal minStat = colStat.min();
@@ -380,8 +380,8 @@ public abstract class H2IndexCostedBase extends BaseIndex {
         if (minStat == null || maxStat == null)
             return estimatePercentFallback(min, max);
 
-        BigDecimal start = (minValue == null || minValue.compareTo(minStat) < 0) ? minStat : minValue;
-        BigDecimal end = (maxValue == null || maxValue.compareTo(maxStat) > 0) ? maxStat : maxValue;
+        BigDecimal start = (minVal == null || minVal.compareTo(minStat) < 0) ? minStat : minVal;
+        BigDecimal end = (maxVal == null || maxVal.compareTo(maxStat) > 0) ? maxStat : maxVal;
 
         BigDecimal actual = end.subtract(start);
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2DynamicTableSelfTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2DynamicTableSelfTest.java
index c0a877807da..f05807e43ff 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2DynamicTableSelfTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/H2DynamicTableSelfTest.java
@@ -1981,9 +1981,9 @@ public class H2DynamicTableSelfTest extends AbstractSchemaSelfTest {
             if (o == null || getClass() != o.getClass())
                 return false;
 
-            TestValue testValue = (TestValue)o;
+            TestValue testVal = (TestValue)o;
 
-            return notUniqueId == testValue.notUniqueId;
+            return notUniqueId == testVal.notUniqueId;
         }
 
         /** {@inheritDoc} */
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/IndexCorruptionRebuildTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/IndexCorruptionRebuildTest.java
index bc8ea9a8878..fb5cfccbaf3 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/IndexCorruptionRebuildTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/index/IndexCorruptionRebuildTest.java
@@ -163,14 +163,14 @@ public class IndexCorruptionRebuildTest extends GridCommonAbstractTest {
         for (int i = 0; i < 100; i++) {
             int counter = i;
 
-            String value = "test" + i;
+            String val = "test" + i;
 
             String insertQry = "insert into %s(col1, col2, col3, col4) values (?1, ?2, ?3, ?4)";
 
             Stream.of(TABLE_NAME_1, TABLE_NAME_2)
                 .map(tableName ->
                     new SqlFieldsQuery(String.format(insertQry, tableName))
-                        .setArgs(String.valueOf(counter), value, value, value)
+                        .setArgs(String.valueOf(counter), val, val, val)
                 ).forEach(cache::query);
         }
 
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
index c588ca1889b..9494be9f7a5 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
@@ -1284,9 +1284,9 @@ public class IgniteWalRecoveryTest extends GridCommonAbstractTest {
         }
 
         for (int i = 0; i < cnt; i++) {
-            byte[] value = storage.readRaw(String.valueOf(i));
-            assert value != null;
-            assert value.length == 3;
+            byte[] val = storage.readRaw(String.valueOf(i));
+            assert val != null;
+            assert val.length == 3;
         }
 
         stopGrid(0);
@@ -1302,8 +1302,8 @@ public class IgniteWalRecoveryTest extends GridCommonAbstractTest {
         assert storage != null;
 
         for (int i = 0; i < cnt; i++) {
-            byte[] value = storage.readRaw(String.valueOf(i));
-            assert value != null;
+            byte[] val = storage.readRaw(String.valueOf(i));
+            assert val != null;
         }
     }
 
@@ -1582,11 +1582,11 @@ public class IgniteWalRecoveryTest extends GridCommonAbstractTest {
             for (int op = 0; op < operationsPerTransaction; op++) {
                 int key = random.nextInt(1000) + 1;
 
-                Object value = random.nextBoolean() ? randomString(random) + key : new BigObject(key);
+                Object val = random.nextBoolean() ? randomString(random) + key : new BigObject(key);
 
-                changesInTransaction.put(key, value);
+                changesInTransaction.put(key, val);
 
-                cache.put(key, value);
+                cache.put(key, val);
             }
 
             if (random.nextBoolean()) {
@@ -1609,9 +1609,9 @@ public class IgniteWalRecoveryTest extends GridCommonAbstractTest {
         cache = ignite.cache(cacheName);
 
         for (Object key : map.keySet()) {
-            Object expectedValue = map.get(key);
-            Object actualValue = cache.get(key);
-            Assert.assertEquals("Unexpected value for key " + key, expectedValue, actualValue);
+            Object expectedVal = map.get(key);
+            Object actualVal = cache.get(key);
+            Assert.assertEquals("Unexpected value for key " + key, expectedVal, actualVal);
         }
     }
 
@@ -1661,9 +1661,9 @@ public class IgniteWalRecoveryTest extends GridCommonAbstractTest {
             for (int op = 0; op < operationsPerTransaction; op++) {
                 int key = random.nextInt(1000) + 1;
 
-                Object value = random.nextBoolean() ? randomString(random) + key : new BigObject(key);
+                Object val = random.nextBoolean() ? randomString(random) + key : new BigObject(key);
 
-                cache.put(key, value);
+                cache.put(key, val);
             }
 
             if (random.nextBoolean())
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlCreateTableTemplateTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlCreateTableTemplateTest.java
index aad067160d4..6f8ef9920d5 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlCreateTableTemplateTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/IgniteSqlCreateTableTemplateTest.java
@@ -76,21 +76,21 @@ public class IgniteSqlCreateTableTemplateTest extends AbstractIndexingCommonTest
         keyBuilder.setField("ID", 1);
         keyBuilder.setField("AFF_PERSON", 2);
 
-        BinaryObjectBuilder valueBuilder = ignite.binary().builder("PERSON_VALUE");
-        valueBuilder.setField("NAME", "test");
+        BinaryObjectBuilder valBuilder = ignite.binary().builder("PERSON_VALUE");
+        valBuilder.setField("NAME", "test");
 
-        ignite.cache("PERSON_CACHE").withKeepBinary().put(keyBuilder.build(), valueBuilder.build());
+        ignite.cache("PERSON_CACHE").withKeepBinary().put(keyBuilder.build(), valBuilder.build());
 
         keyBuilder = ignite.binary().builder("ORGANIZATION_KEY");
 
         keyBuilder.setField("ID", 1);
         keyBuilder.setField("AFF_ORGANIZATION", 2);
 
-        valueBuilder = ignite.binary().builder("ORGANIZATION_VALUE");
+        valBuilder = ignite.binary().builder("ORGANIZATION_VALUE");
 
-        valueBuilder.setField("NAME", "test");
+        valBuilder.setField("NAME", "test");
 
-        ignite.cache("ORGANIZATION_CACHE").withKeepBinary().put(keyBuilder.build(), valueBuilder.build());
+        ignite.cache("ORGANIZATION_CACHE").withKeepBinary().put(keyBuilder.build(), valBuilder.build());
 
         assertEquals(1, ignite.cache("PERSON_CACHE").query(
             new SqlFieldsQuery("Select NAME from PERSON where ID = 1")).getAll().size()
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 6e5cbbab8dc..3c1262d4ea6 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
@@ -2023,10 +2023,10 @@ public class IgniteSqlSplitterSelfTest extends AbstractIndexingCommonTest {
             ignite(0).getOrCreateCache(cacheConfig(cacheName, true, Integer.class, AvgDataTypes.class));
 
         // avg 13.125; int avg 13
-        double value[] = new double[] {1, 5, 7, 8, 10.5, 13.5, 20, 40};
+        double val[] = new double[] {1, 5, 7, 8, 10.5, 13.5, 20, 40};
 
-        for (int i = 0; i < value.length; i++) {
-            Number v = value[i];
+        for (int i = 0; i < val.length; i++) {
+            Number v = val[i];
 
             cache.put(i, new AvgDataTypes(
                 v.byteValue(),
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsStorageRestartTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsStorageRestartTest.java
index 178aa42fdea..1cecc59ac94 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsStorageRestartTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsStorageRestartTest.java
@@ -125,8 +125,8 @@ public class StatisticsStorageRestartTest extends StatisticsAbstractTest {
         metastorage.write(statKeyInvalid, new byte[2]);
 
         String outerStatKey = "some.key.1";
-        byte[] outerStatValue = new byte[] {1, 2};
-        metastorage.write(outerStatKey, outerStatValue);
+        byte[] outerStatVal = new byte[] {1, 2};
+        metastorage.write(outerStatKey, outerStatVal);
 
         IgniteStatisticsPersistenceStoreImpl statStore2 = new IgniteStatisticsPersistenceStoreImpl(subscriptionProcessor,
             new IgniteCacheDatabaseSharedManager(new GridTestKernalContext(log)){}, cls -> log);
@@ -136,6 +136,6 @@ public class StatisticsStorageRestartTest extends StatisticsAbstractTest {
         assertNull(metastorage.read(statKeyInvalid));
         assertTrue(statStore.getLocalPartitionsStatistics(k1).isEmpty());
         assertFalse(statStore.getLocalPartitionsStatistics(k2).isEmpty());
-        assertTrue(Arrays.equals(outerStatValue, (byte[])metastorage.read(outerStatKey)));
+        assertTrue(Arrays.equals(outerStatVal, (byte[])metastorage.read(outerStatKey)));
     }
 }
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/FullHLLTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/FullHLLTest.java
index e31c9b389f8..4ba3add32ae 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/FullHLLTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/FullHLLTest.java
@@ -98,14 +98,14 @@ public class FullHLLTest {
 
         // all registers at 'medium' value
         {
-            final int registerValue = 7/*chosen to ensure neither correction kicks in*/;
+            final int registerVal = 7/*chosen to ensure neither correction kicks in*/;
             for (int i = 0; i < m; i++)
-                hll.addRaw(ProbabilisticTestUtil.constructHLLValue(log2m, i, registerValue));
+                hll.addRaw(ProbabilisticTestUtil.constructHLLValue(log2m, i, registerVal));
 
             final long cardinality = hll.cardinality();
 
             // Simplified estimator when all registers take same value: alpha / (m/2^val)
-            final double estimator = HLLUtil.alphaMSquared(m) / ((double)m / Math.pow(2, registerValue));
+            final double estimator = HLLUtil.alphaMSquared(m) / ((double)m / Math.pow(2, registerVal));
 
             // Assert conditions for uncorrected range
             assertTrue(estimator <= Math.pow(2, l) / 30);
@@ -132,14 +132,14 @@ public class FullHLLTest {
             256/*sparseThreshold, arbitrary, unused*/, HLLType.FULL);
 
         {
-            final int registerValue = 31/*chosen to ensure large correction kicks in*/;
+            final int registerVal = 31/*chosen to ensure large correction kicks in*/;
             for (int i = 0; i < m; i++)
-                hll.addRaw(ProbabilisticTestUtil.constructHLLValue(log2m, i, registerValue));
+                hll.addRaw(ProbabilisticTestUtil.constructHLLValue(log2m, i, registerVal));
 
             final long cardinality = hll.cardinality();
 
             // Simplified estimator when all registers take same value: alpha / (m/2^val)
-            final double estimator = HLLUtil.alphaMSquared(m) / ((double)m / Math.pow(2, registerValue));
+            final double estimator = HLLUtil.alphaMSquared(m) / ((double)m / Math.pow(2, registerVal));
 
             // Assert conditions for large range
 
@@ -306,8 +306,8 @@ public class FullHLLTest {
                 256/*sparseThreshold, arbitrary, unused*/, HLLType.FULL);
 
             for (int i = 0; i < 3; i++) {
-                final long rawValue = ProbabilisticTestUtil.constructHLLValue(log2m, i, (i + 9));
-                hll.addRaw(rawValue);
+                final long rawVal = ProbabilisticTestUtil.constructHLLValue(log2m, i, (i + 9));
+                hll.addRaw(rawVal);
             }
 
             final byte[] bytes = hll.toBytes(schemaVer);
@@ -326,8 +326,8 @@ public class FullHLLTest {
                 256/*sparseThreshold, arbitrary, unused*/, HLLType.FULL);
 
             for (int i = 0; i < (1 << log2m)/*aka 2^log2m*/; i++) {
-                final long rawValue = ProbabilisticTestUtil.constructHLLValue(log2m, i, (i % 9) + 1);
-                hll.addRaw(rawValue);
+                final long rawVal = ProbabilisticTestUtil.constructHLLValue(log2m, i, (i % 9) + 1);
+                hll.addRaw(rawVal);
             }
 
             final byte[] bytes = hll.toBytes(schemaVer);
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/ProbabilisticTestUtil.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/ProbabilisticTestUtil.java
index fb32acf5c4e..f94fef25ce6 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/ProbabilisticTestUtil.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/hll/ProbabilisticTestUtil.java
@@ -37,8 +37,8 @@ public class ProbabilisticTestUtil {
      */
     public static long constructHLLValue(final int log2m, final int registerIndex, final int registerValue) {
         final long partition = registerIndex;
-        final long substreamValue = (1L << (registerValue - 1));
-        return (substreamValue << log2m) | partition;
+        final long substreamVal = (1L << (registerValue - 1));
+        return (substreamVal << log2m) | partition;
     }
 
     /**
@@ -54,10 +54,10 @@ public class ProbabilisticTestUtil {
      * Extracts the HLL register value from a raw value.
      */
     public static byte getRegisterValue(final long rawValue, final int log2m) {
-        final long substreamValue = (rawValue >>> log2m);
+        final long substreamVal = (rawValue >>> log2m);
         final byte p_w;
 
-        if (substreamValue == 0L) {
+        if (substreamVal == 0L) {
             // The paper does not cover p(0x0), so the special value 0 is used.
             // 0 is the original initialization value of the registers, so by
             // doing this the HLL simply ignores it. This is acceptable
@@ -65,7 +65,7 @@ public class ProbabilisticTestUtil {
             p_w = 0;
         }
         else
-            p_w = (byte)Math.min(1 + BitUtil.leastSignificantBit(substreamValue), 31);
+            p_w = (byte)Math.min(1 + BitUtil.leastSignificantBit(substreamVal), 31);
 
         return p_w;
     }
diff --git a/modules/opencensus/src/test/java/org/apache/ignite/internal/processors/monitoring/opencensus/OpenCensusMetricExporterSpiTest.java b/modules/opencensus/src/test/java/org/apache/ignite/internal/processors/monitoring/opencensus/OpenCensusMetricExporterSpiTest.java
index 3f4df06d797..5b042b944a8 100644
--- a/modules/opencensus/src/test/java/org/apache/ignite/internal/processors/monitoring/opencensus/OpenCensusMetricExporterSpiTest.java
+++ b/modules/opencensus/src/test/java/org/apache/ignite/internal/processors/monitoring/opencensus/OpenCensusMetricExporterSpiTest.java
@@ -153,8 +153,8 @@ public class OpenCensusMetricExporterSpiTest extends AbstractExporterSpiTest {
         HistogramMetricImpl histogramMetric =
             ignite.context().metric().registry(registryName).histogram(histogramName, bounds, histogramDesc);
 
-        for (long value : testValues)
-            histogramMetric.value(value);
+        for (long val : testValues)
+            histogramMetric.value(val);
 
         assertTrue("Histogram metrics should be exported via http", checkHttpMetrics(expectedValuesPtrn));
 
@@ -162,8 +162,8 @@ public class OpenCensusMetricExporterSpiTest extends AbstractExporterSpiTest {
 
         histogramMetric.reset(bounds);
 
-        for (long value : testValues)
-            histogramMetric.value(value);
+        for (long val : testValues)
+            histogramMetric.value(val);
 
         expectedValuesPtrn = new String[] {
             "test_registry_test_histogram_0_50.* 3",
diff --git a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
index 05874457e88..ba09e7ff04b 100644
--- a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
+++ b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
@@ -452,12 +452,12 @@ public class GridJettyRestHandler extends AbstractHandler {
                 throw new IllegalStateException("Received null result from handler: " + hnd);
 
             if (getAllAsArray && cmd == GridRestCommand.CACHE_GET_ALL) {
-                List<Object> resKeyValue = new ArrayList<>();
+                List<Object> resKeyVal = new ArrayList<>();
 
                 for (Map.Entry<Object, Object> me : ((Map<Object, Object>)cmdRes.getResponse()).entrySet())
-                    resKeyValue.add(new IgniteBiTuple<>(me.getKey(), me.getValue()));
+                    resKeyVal.add(new IgniteBiTuple<>(me.getKey(), me.getValue()));
 
-                cmdRes.setResponse(resKeyValue);
+                cmdRes.setResponse(resKeyVal);
             }
 
             byte[] sesTok = cmdRes.sessionTokenBytes();
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 04ea7435645..0e4c1d48c66 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
@@ -1071,7 +1071,7 @@ public class WebSessionSelfTest extends GridCommonAbstractTest {
      * @return sesId
      */
     private String getSessionIdFromCookie(URLConnection conn) {
-        String sesCookieValue = null;
+        String sesCookieVal = null;
         String sesId = null;
         Map<String, List<String>> hdrFields = conn.getHeaderFields();
         Set<String> hdrFieldsSet = hdrFields.keySet();
@@ -1081,13 +1081,13 @@ public class WebSessionSelfTest extends GridCommonAbstractTest {
             String hdrFieldKey = hdrFieldsIter.next();
 
             if ("Set-Cookie".equalsIgnoreCase(hdrFieldKey)) {
-                List<String> hdrFieldValue = hdrFields.get(hdrFieldKey);
+                List<String> hdrFieldVal = hdrFields.get(hdrFieldKey);
 
-                for (String hdrValue : hdrFieldValue) {
-                    String[] fields = hdrValue.split(";");
-                    sesCookieValue = fields[0];
-                    sesId = sesCookieValue.substring(sesCookieValue.indexOf("=") + 1,
-                            sesCookieValue.length());
+                for (String hdrVal : hdrFieldVal) {
+                    String[] fields = hdrVal.split(";");
+                    sesCookieVal = fields[0];
+                    sesId = sesCookieVal.substring(sesCookieVal.indexOf("=") + 1,
+                            sesCookieVal.length());
                 }
             }
         }