http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheQueueAdapter.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheQueueAdapter.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheQueueAdapter.java
index e42c00b..6505624 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheQueueAdapter.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheQueueAdapter.java
@@ -406,7 +406,7 @@ public abstract class GridCacheQueueAdapter<T> extends 
AbstractCollection<T> imp
     }
 
     /** {@inheritDoc} */
-    public void affinityRun(IgniteRunnable job) {
+    @Override public void affinityRun(IgniteRunnable job) {
         if (!collocated)
             throw new IgniteException("Failed to execute affinityRun() for 
non-collocated queue: " + name() +
                 ". This operation is supported only for collocated queues.");
@@ -415,7 +415,7 @@ public abstract class GridCacheQueueAdapter<T> extends 
AbstractCollection<T> imp
     }
 
     /** {@inheritDoc} */
-    public <R> R affinityCall(IgniteCallable<R> job) {
+    @Override public <R> R affinityCall(IgniteCallable<R> job) {
         if (!collocated)
             throw new IgniteException("Failed to execute affinityCall() for 
non-collocated queue: " + name() +
                 ". This operation is supported only for collocated queues.");

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopFileBlock.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopFileBlock.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopFileBlock.java
index 351abce..978bf20 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopFileBlock.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopFileBlock.java
@@ -159,7 +159,7 @@ public class HadoopFileBlock extends HadoopInputSplit {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return S.toString(HadoopFileBlock.class, this, "hosts", 
Arrays.toString(hosts));
     }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobEx.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobEx.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobEx.java
index ba78af9..46606da 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobEx.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/hadoop/HadoopJobEx.java
@@ -47,7 +47,7 @@ public abstract class HadoopJobEx implements HadoopJob {
      *
      * @return Input splits.
      */
-    abstract public Collection<HadoopInputSplit> input();
+    @Override abstract public Collection<HadoopInputSplit> input();
 
     /**
      * Returns context for task execution.

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDirectoryInfo.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDirectoryInfo.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDirectoryInfo.java
index 269098b..26979e5 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDirectoryInfo.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsDirectoryInfo.java
@@ -62,7 +62,7 @@ public class IgfsDirectoryInfo extends IgfsEntryInfo 
implements Binarylizable {
      * @param len New length.
      * @return Updated file info.
      */
-    public IgfsEntryInfo length(long len) {
+    @Override public IgfsEntryInfo length(long len) {
         throw new UnsupportedOperationException("length");
     }
 
@@ -107,47 +107,47 @@ public class IgfsDirectoryInfo extends IgfsEntryInfo 
implements Binarylizable {
     }
 
     /** {@inheritDoc} */
-    protected IgfsDirectoryInfo copy() {
+    @Override protected IgfsDirectoryInfo copy() {
         return new IgfsDirectoryInfo(id, listing, props, accessTime, 
modificationTime);
     }
 
     /** {@inheritDoc} */
-    public boolean isFile() {
+    @Override public boolean isFile() {
         return false;
     }
 
     /** {@inheritDoc} */
-    public long length() {
+    @Override public long length() {
         return 0;
     }
 
     /** {@inheritDoc} */
-    public int blockSize() {
+    @Override public int blockSize() {
         return 0;
     }
 
     /** {@inheritDoc} */
-    public long blocksCount() {
+    @Override public long blocksCount() {
         return 0;
     }
 
     /** {@inheritDoc} */
-    public Map<String, IgfsListingEntry> listing() {
+    @Override public Map<String, IgfsListingEntry> listing() {
         return listing != null ? listing : Collections.<String, 
IgfsListingEntry>emptyMap();
     }
 
     /** {@inheritDoc} */
-    public boolean hasChildren() {
+    @Override public boolean hasChildren() {
         return !F.isEmpty(listing);
     }
 
     /** {@inheritDoc} */
-    public boolean hasChild(String name) {
+    @Override public boolean hasChild(String name) {
         return listing != null && listing.containsKey(name);
     }
 
     /** {@inheritDoc} */
-    public boolean hasChild(String name, IgniteUuid expId) {
+    @Override public boolean hasChild(String name, IgniteUuid expId) {
         if (listing != null) {
             IgfsListingEntry entry = listing.get(name);
 
@@ -159,22 +159,22 @@ public class IgfsDirectoryInfo extends IgfsEntryInfo 
implements Binarylizable {
     }
 
     /** {@inheritDoc} */
-    @Nullable public IgniteUuid affinityKey() {
+    @Override @Nullable public IgniteUuid affinityKey() {
         return null;
     }
 
     /** {@inheritDoc} */
-    public IgfsFileMap fileMap() {
+    @Override public IgfsFileMap fileMap() {
         return null;
     }
 
     /** {@inheritDoc} */
-    @Nullable public IgniteUuid lockId() {
+    @Override @Nullable public IgniteUuid lockId() {
         return null;
     }
 
     /** {@inheritDoc} */
-    public boolean evictExclude() {
+    @Override public boolean evictExclude() {
         return true;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileInfo.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileInfo.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileInfo.java
index 337f281..3db3c87 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileInfo.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileInfo.java
@@ -152,62 +152,62 @@ public final class IgfsFileInfo extends IgfsEntryInfo 
implements Binarylizable {
     }
 
     /** {@inheritDoc} */
-    public boolean isFile() {
+    @Override public boolean isFile() {
         return true;
     }
 
     /** {@inheritDoc} */
-    public long length() {
+    @Override public long length() {
         return len;
     }
 
     /** {@inheritDoc} */
-    public int blockSize() {
+    @Override public int blockSize() {
         return blockSize;
     }
 
     /** {@inheritDoc} */
-    public long blocksCount() {
+    @Override public long blocksCount() {
         return (len + blockSize() - 1) / blockSize();
     }
 
     /** {@inheritDoc} */
-    public Map<String, IgfsListingEntry> listing() {
+    @Override public Map<String, IgfsListingEntry> listing() {
         return Collections.emptyMap();
     }
 
     /** {@inheritDoc} */
-    public boolean hasChildren() {
+    @Override public boolean hasChildren() {
         return false;
     }
 
     /** {@inheritDoc} */
-    public boolean hasChild(String name) {
+    @Override public boolean hasChild(String name) {
         return false;
     }
 
     /** {@inheritDoc} */
-    public boolean hasChild(String name, IgniteUuid expId) {
+    @Override public boolean hasChild(String name, IgniteUuid expId) {
         return false;
     }
 
     /** {@inheritDoc} */
-    @Nullable public IgniteUuid affinityKey() {
+    @Override @Nullable public IgniteUuid affinityKey() {
         return affKey;
     }
 
     /** {@inheritDoc} */
-    public IgfsFileMap fileMap() {
+    @Override public IgfsFileMap fileMap() {
         return fileMap;
     }
 
     /** {@inheritDoc} */
-    @Nullable public IgniteUuid lockId() {
+    @Override @Nullable public IgniteUuid lockId() {
         return lockId;
     }
 
     /** {@inheritDoc} */
-    public boolean evictExclude() {
+    @Override public boolean evictExclude() {
         return evictExclude;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileWorkerBatch.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileWorkerBatch.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileWorkerBatch.java
index 17875a2..ee809e0 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileWorkerBatch.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsFileWorkerBatch.java
@@ -128,7 +128,7 @@ public abstract class IgfsFileWorkerBatch implements 
Runnable {
     /**
      * Process the batch.
      */
-    @SuppressWarnings("unchecked")
+    @Override @SuppressWarnings("unchecked")
     public void run() {
         Throwable err = null;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/data/IgfsDataPutProcessor.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/data/IgfsDataPutProcessor.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/data/IgfsDataPutProcessor.java
index 2029d4e..4e4a6da 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/data/IgfsDataPutProcessor.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/data/IgfsDataPutProcessor.java
@@ -62,7 +62,7 @@ public class IgfsDataPutProcessor implements 
EntryProcessor<IgfsBlockKey, byte[]
     }
 
     /** {@inheritDoc} */
-    public Void process(MutableEntry<IgfsBlockKey, byte[]> entry, Object... 
args)
+    @Override public Void process(MutableEntry<IgfsBlockKey, byte[]> entry, 
Object... args)
         throws EntryProcessorException {
         byte[] curVal = entry.getValue();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheRequest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheRequest.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheRequest.java
index 9e2d1f1..9e39b56 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheRequest.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ClientCacheRequest.java
@@ -123,7 +123,7 @@ class ClientCacheRequest extends ClientRequest {
     }
 
     /** {@inheritDoc} */
-    protected void authorize(ClientConnectionContext ctx, SecurityPermission 
perm) {
+    @Override protected void authorize(ClientConnectionContext ctx, 
SecurityPermission perm) {
         SecurityContext secCtx = ctx.securityContext();
 
         if (secCtx != null) {

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/memory/PlatformOutputStreamImpl.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/memory/PlatformOutputStreamImpl.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/memory/PlatformOutputStreamImpl.java
index 884e718..5d01ae9 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/memory/PlatformOutputStreamImpl.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/memory/PlatformOutputStreamImpl.java
@@ -336,7 +336,7 @@ public class PlatformOutputStreamImpl implements 
PlatformOutputStream {
     }
 
     /** {@inheritDoc} */
-    public int capacity() {
+    @Override public int capacity() {
         return cap;
     }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryEntityEx.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryEntityEx.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryEntityEx.java
index a697882..f94e651 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryEntityEx.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/QueryEntityEx.java
@@ -63,7 +63,7 @@ public class QueryEntityEx extends QueryEntity {
     }
 
     /** {@inheritDoc} */
-    public QueryEntity setNotNullFields(@Nullable Set<String> notNullFields) {
+    @Override public QueryEntity setNotNullFields(@Nullable Set<String> 
notNullFields) {
         this.notNullFields = notNullFields;
 
         return this;

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/schema/SchemaOperationWorker.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/schema/SchemaOperationWorker.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/schema/SchemaOperationWorker.java
index 0bf4d22..3741a5d 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/schema/SchemaOperationWorker.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/schema/SchemaOperationWorker.java
@@ -177,7 +177,7 @@ public class SchemaOperationWorker extends GridWorker {
     /**
      * Cancel operation.
      */
-    public void cancel() {
+    @Override public void cancel() {
         if (cancelToken.cancel())
             super.cancel();
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/client/message/GridClientNodeMetricsBean.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/client/message/GridClientNodeMetricsBean.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/client/message/GridClientNodeMetricsBean.java
index 4138c24..829728b 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/client/message/GridClientNodeMetricsBean.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/client/message/GridClientNodeMetricsBean.java
@@ -1231,12 +1231,12 @@ public class GridClientNodeMetricsBean implements 
Externalizable {
     }
 
     /** {@inheritDoc} */
-    public int hashCode() {
+    @Override public int hashCode() {
         return System.identityHashCode(this);
     }
 
     /** {@inheritDoc} */
-    public boolean equals(Object obj) {
+    @Override public boolean equals(Object obj) {
         if (this == obj)
             return true;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/protocols/tcp/GridTcpRestParser.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/protocols/tcp/GridTcpRestParser.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/protocols/tcp/GridTcpRestParser.java
index 65eb3c3..21fdc37 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/protocols/tcp/GridTcpRestParser.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/protocols/tcp/GridTcpRestParser.java
@@ -851,7 +851,7 @@ public class GridTcpRestParser implements GridNioParser {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return S.toString(GridTcpRestParser.class, this);
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/processors/service/GridServiceProcessor.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/service/GridServiceProcessor.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/service/GridServiceProcessor.java
index fce7053..2dc7e31 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/processors/service/GridServiceProcessor.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/processors/service/GridServiceProcessor.java
@@ -1949,7 +1949,7 @@ public class GridServiceProcessor extends 
GridProcessorAdapter implements Ignite
 
                         @Override public void onTimeout() {
                             depExe.execute(new Runnable() {
-                                public void run() {
+                                @Override public void run() {
                                     onReassignmentFailed(topVer, retries);
                                 }
                             });

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexer.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexer.java 
b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexer.java
index d091fc4..361bd43 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexer.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexer.java
@@ -210,29 +210,29 @@ public class SqlLexer implements SqlLexerToken {
     }
 
     /** {@inheritDoc} */
-    public String sql() {
+    @Override public String sql() {
         return sql;
     }
 
     /** {@inheritDoc} */
-    public String token() {
+    @Override public String token() {
         return token;
     }
 
     /** {@inheritDoc} */
-    public char tokenFirstChar() {
+    @Override public char tokenFirstChar() {
         assert tokenTyp != SqlLexerTokenType.EOF;
 
         return token.charAt(0);
     }
 
     /** {@inheritDoc} */
-    public int tokenPosition() {
+    @Override public int tokenPosition() {
         return tokenPos;
     }
 
     /** {@inheritDoc} */
-    public SqlLexerTokenType tokenType() {
+    @Override public SqlLexerTokenType tokenType() {
         return tokenTyp;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexerLookAheadToken.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexerLookAheadToken.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexerLookAheadToken.java
index e697473..de5b63e 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexerLookAheadToken.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/sql/SqlLexerLookAheadToken.java
@@ -49,7 +49,7 @@ public class SqlLexerLookAheadToken implements SqlLexerToken {
     }
 
     /** {@inheritDoc} */
-    public String sql() {
+    @Override public String sql() {
         return sql;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentSkipListSet.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentSkipListSet.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentSkipListSet.java
index a7a0ddc..5c1f95e 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentSkipListSet.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentSkipListSet.java
@@ -164,7 +164,7 @@ public class GridConcurrentSkipListSet<E> extends 
GridSerializableSet<E> impleme
     }
 
     /** {@inheritDoc} */
-    public boolean equals(Object o) {
+    @Override public boolean equals(Object o) {
         // Override AbstractSet version to avoid calling size()
         if (o == this)
             return true;

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/GridStringBuilder.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/GridStringBuilder.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/GridStringBuilder.java
index 410f278..2d4a076 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/GridStringBuilder.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/GridStringBuilder.java
@@ -482,7 +482,7 @@ public class GridStringBuilder implements Serializable {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return impl.toString();
     }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteExceptionRegistry.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteExceptionRegistry.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteExceptionRegistry.java
index 03eaaea..0ae7b19 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteExceptionRegistry.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteExceptionRegistry.java
@@ -241,7 +241,7 @@ public class IgniteExceptionRegistry {
         }
 
         /** {@inheritDoc} */
-        public String toString() {
+        @Override public String toString() {
             return S.toString(ExceptionInfo.class, this);
         }
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/StripedExecutor.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/StripedExecutor.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/StripedExecutor.java
index 904b8d1..d89124f 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/StripedExecutor.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/StripedExecutor.java
@@ -667,7 +667,7 @@ public class StripedExecutor implements ExecutorService {
         }
 
         /** {@inheritDoc} */
-        void execute(Runnable cmd) {
+        @Override void execute(Runnable cmd) {
             queue.add(cmd);
 
             if (parked)
@@ -739,7 +739,7 @@ public class StripedExecutor implements ExecutorService {
         }
 
         /** {@inheritDoc} */
-        void execute(Runnable cmd) {
+        @Override void execute(Runnable cmd) {
             queue.add(cmd);
         }
 
@@ -796,7 +796,7 @@ public class StripedExecutor implements ExecutorService {
         }
 
         /** {@inheritDoc} */
-        void execute(Runnable cmd) {
+        @Override void execute(Runnable cmd) {
             queue.add(cmd);
         }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/ContainsPredicate.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/ContainsPredicate.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/ContainsPredicate.java
index e3d613a..c5ca76b 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/ContainsPredicate.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/ContainsPredicate.java
@@ -49,7 +49,7 @@ public class ContainsPredicate<T> implements 
IgnitePredicate<T> {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return S.toString(ContainsPredicate.class, this);
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/NotContainsPredicate.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/NotContainsPredicate.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/NotContainsPredicate.java
index 5f8ba9a..9bacd9a 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/NotContainsPredicate.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/gridfunc/NotContainsPredicate.java
@@ -48,7 +48,7 @@ public class NotContainsPredicate<T> implements 
IgnitePredicate<T> {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return S.toString(NotContainsPredicate.class, this);
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterAdapter.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterAdapter.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterAdapter.java
index 4ede4b7..05f4ec6 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterAdapter.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterAdapter.java
@@ -47,7 +47,7 @@ public abstract class GridNioFilterAdapter implements 
GridNioFilter {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return name;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterChain.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterChain.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterChain.java
index ec59020..a57b546 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterChain.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioFilterChain.java
@@ -77,7 +77,7 @@ public class GridNioFilterChain<T> extends 
GridNioFilterAdapter {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         if (str == null) {
             StringBuilder res = new StringBuilder("FilterChain[filters=[");
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioServer.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioServer.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioServer.java
index 85332f4..9678ae7 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioServer.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/nio/GridNioServer.java
@@ -1875,7 +1875,7 @@ public class GridNioServer<T> {
          *
          * @param req Change request.
          */
-        public void offer(SessionChangeRequest req) {
+        @Override public void offer(SessionChangeRequest req) {
             changeReqs.offer(req);
 
             if (select)
@@ -2190,7 +2190,7 @@ public class GridNioServer<T> {
         /**
          * @param ses Session.
          */
-        public final void registerWrite(GridSelectorNioSessionImpl ses) {
+        @Override public final void registerWrite(GridSelectorNioSessionImpl 
ses) {
             SelectionKey key = ses.key();
 
             if (key.isValid()) {
@@ -3337,17 +3337,17 @@ public class GridNioServer<T> {
         }
 
         /** {@inheritDoc} */
-        public NioOperation operation() {
+        @Override public NioOperation operation() {
             return op;
         }
 
         /** {@inheritDoc} */
-        public Object message() {
+        @Override public Object message() {
             return msg;
         }
 
         /** {@inheritDoc} */
-        public void resetSession(GridNioSession ses) {
+        @Override public void resetSession(GridNioSession ses) {
             assert msg instanceof Message : msg;
 
             this.ses = (GridSelectorNioSessionImpl)ses;
@@ -3361,7 +3361,7 @@ public class GridNioServer<T> {
         }
 
         /** {@inheritDoc} */
-        public GridSelectorNioSessionImpl session() {
+        @Override public GridSelectorNioSessionImpl session() {
             return ses;
         }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/unsafe/GridUnsafePartitionedMap.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/unsafe/GridUnsafePartitionedMap.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/unsafe/GridUnsafePartitionedMap.java
index 4cba7fd..42b2769 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/unsafe/GridUnsafePartitionedMap.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/util/offheap/unsafe/GridUnsafePartitionedMap.java
@@ -291,7 +291,7 @@ public class GridUnsafePartitionedMap implements 
GridOffHeapPartitionedMap {
     /** {@inheritDoc} */
     @Override public GridCloseableIterator<IgniteBiTuple<byte[], byte[]>> 
iterator() {
         return new PartitionedMapCloseableIterator<IgniteBiTuple<byte[], 
byte[]>>() {
-            protected void advance() throws IgniteCheckedException {
+            @Override protected void advance() throws IgniteCheckedException {
                 curIt = null;
 
                 while (p < parts) {
@@ -313,7 +313,7 @@ public class GridUnsafePartitionedMap implements 
GridOffHeapPartitionedMap {
         assert c != null;
 
         return new PartitionedMapCloseableIterator<T>() {
-            protected void advance() throws IgniteCheckedException {
+            @Override protected void advance() throws IgniteCheckedException {
                 curIt = null;
 
                 while (p < parts) {

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSuppressedError.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSuppressedError.java
 
b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSuppressedError.java
index 2ffaabd..e971341 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSuppressedError.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/internal/visor/node/VisorSuppressedError.java
@@ -141,7 +141,7 @@ public class VisorSuppressedError extends 
VisorDataTransferObject {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return S.toString(VisorSuppressedError.class, this);
     }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/lang/IgniteProductVersion.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/lang/IgniteProductVersion.java 
b/modules/core/src/main/java/org/apache/ignite/lang/IgniteProductVersion.java
index 457ec55..eef134a 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/lang/IgniteProductVersion.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/lang/IgniteProductVersion.java
@@ -258,7 +258,7 @@ public class IgniteProductVersion implements 
Comparable<IgniteProductVersion>, E
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         String revTsStr = new SimpleDateFormat("yyyyMMdd").format(new 
Date(revTs * 1000));
 
         String hash = U.byteArray2HexString(revHash).toLowerCase();

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/mxbean/CacheMetricsMXBean.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/mxbean/CacheMetricsMXBean.java 
b/modules/core/src/main/java/org/apache/ignite/mxbean/CacheMetricsMXBean.java
index 16bdede..74991bb 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/mxbean/CacheMetricsMXBean.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/mxbean/CacheMetricsMXBean.java
@@ -28,271 +28,271 @@ import org.apache.ignite.cache.CacheMetrics;
 @MXBeanDescription("MBean that provides access to cache descriptor.")
 public interface CacheMetricsMXBean extends CacheStatisticsMXBean, 
CacheMXBean, CacheMetrics {
     /** {@inheritDoc} */
-    @MXBeanDescription("Clear statistics.")
+    @Override @MXBeanDescription("Clear statistics.")
     public void clear();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of hits.")
+    @Override @MXBeanDescription("Number of hits.")
     public long getCacheHits();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Percentage of successful hits.")
+    @Override @MXBeanDescription("Percentage of successful hits.")
     public float getCacheHitPercentage();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of misses.")
+    @Override @MXBeanDescription("Number of misses.")
     public long getCacheMisses();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Percentage of accesses that failed to find anything.")
+    @Override @MXBeanDescription("Percentage of accesses that failed to find 
anything.")
     public float getCacheMissPercentage();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of gets.")
+    @Override @MXBeanDescription("Number of gets.")
     public long getCacheGets();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of puts.")
+    @Override @MXBeanDescription("Number of puts.")
     public long getCachePuts();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of removals.")
+    @Override @MXBeanDescription("Number of removals.")
     public long getCacheRemovals();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of eviction entries.")
+    @Override @MXBeanDescription("Number of eviction entries.")
     public long getCacheEvictions();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time to execute get.")
+    @Override @MXBeanDescription("Average time to execute get.")
     public float getAverageGetTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time to execute put.")
+    @Override @MXBeanDescription("Average time to execute put.")
     public float getAveragePutTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time to execute remove.")
+    @Override @MXBeanDescription("Average time to execute remove.")
     public float getAverageRemoveTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time to commit transaction.")
+    @Override @MXBeanDescription("Average time to commit transaction.")
     public float getAverageTxCommitTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time to rollback transaction.")
+    @Override @MXBeanDescription("Average time to rollback transaction.")
     public float getAverageTxRollbackTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of transaction commits.")
+    @Override @MXBeanDescription("Number of transaction commits.")
     public long getCacheTxCommits();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of transaction rollback.")
+    @Override @MXBeanDescription("Number of transaction rollback.")
     public long getCacheTxRollbacks();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Cache name.")
+    @Override @MXBeanDescription("Cache name.")
     public String name();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of gets from off-heap memory.")
+    @Override @MXBeanDescription("Number of gets from off-heap memory.")
     public long getOffHeapGets();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of puts to off-heap memory.")
+    @Override @MXBeanDescription("Number of puts to off-heap memory.")
     public long getOffHeapPuts();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of removed entries from off-heap memory.")
+    @Override @MXBeanDescription("Number of removed entries from off-heap 
memory.")
     public long getOffHeapRemovals();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of evictions from off-heap memory.")
+    @Override @MXBeanDescription("Number of evictions from off-heap memory.")
     public long getOffHeapEvictions();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of hits on off-heap memory.")
+    @Override @MXBeanDescription("Number of hits on off-heap memory.")
     public long getOffHeapHits();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Percentage of hits on off-heap memory.")
+    @Override @MXBeanDescription("Percentage of hits on off-heap memory.")
     public float getOffHeapHitPercentage();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of misses on off-heap memory.")
+    @Override @MXBeanDescription("Number of misses on off-heap memory.")
     public long getOffHeapMisses();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Percentage of misses on off-heap memory.")
+    @Override @MXBeanDescription("Percentage of misses on off-heap memory.")
     public float getOffHeapMissPercentage();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of entries stored in off-heap memory.")
+    @Override @MXBeanDescription("Number of entries stored in off-heap 
memory.")
     public long getOffHeapEntriesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of entries in heap memory.")
+    @Override @MXBeanDescription("Number of entries in heap memory.")
     public long getHeapEntriesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of primary entries stored in off-heap memory.")
+    @Override @MXBeanDescription("Number of primary entries stored in off-heap 
memory.")
     public long getOffHeapPrimaryEntriesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of backup stored in off-heap memory.")
+    @Override @MXBeanDescription("Number of backup stored in off-heap memory.")
     public long getOffHeapBackupEntriesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Memory size allocated in off-heap.")
+    @Override @MXBeanDescription("Memory size allocated in off-heap.")
     public long getOffHeapAllocatedSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of non-null values in the cache.")
+    @Override @MXBeanDescription("Number of non-null values in the cache.")
     public int getSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of non-null values in the cache as a long 
value.")
+    @Override @MXBeanDescription("Number of non-null values in the cache as a 
long value.")
     public long getCacheSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of keys in the cache (possibly with null 
values).")
+    @Override @MXBeanDescription("Number of keys in the cache (possibly with 
null values).")
     public int getKeySize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True if cache is empty.")
+    @Override @MXBeanDescription("True if cache is empty.")
     public boolean isEmpty();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Current size of evict queue.")
+    @Override @MXBeanDescription("Current size of evict queue.")
     public int getDhtEvictQueueCurrentSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction per-thread map size.")
+    @Override @MXBeanDescription("Transaction per-thread map size.")
     public int getTxThreadMapSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction per-Xid map size.")
+    @Override @MXBeanDescription("Transaction per-Xid map size.")
     public int getTxXidMapSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction committed queue size.")
+    @Override @MXBeanDescription("Transaction committed queue size.")
     public int getTxCommitQueueSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction prepared queue size.")
+    @Override @MXBeanDescription("Transaction prepared queue size.")
     public int getTxPrepareQueueSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction start version counts map size.")
+    @Override @MXBeanDescription("Transaction start version counts map size.")
     public int getTxStartVersionCountsSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction committed ID map size.")
+    @Override @MXBeanDescription("Transaction committed ID map size.")
     public int getTxCommittedVersionsSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction rolled back ID map size.")
+    @Override @MXBeanDescription("Transaction rolled back ID map size.")
     public int getTxRolledbackVersionsSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction DHT per-thread map size.")
+    @Override @MXBeanDescription("Transaction DHT per-thread map size.")
     public int getTxDhtThreadMapSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction DHT per-Xid map size.")
+    @Override @MXBeanDescription("Transaction DHT per-Xid map size.")
     public int getTxDhtXidMapSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction DHT committed queue size.")
+    @Override @MXBeanDescription("Transaction DHT committed queue size.")
     public int getTxDhtCommitQueueSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction DHT prepared queue size.")
+    @Override @MXBeanDescription("Transaction DHT prepared queue size.")
     public int getTxDhtPrepareQueueSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction DHT start version counts map size.")
+    @Override @MXBeanDescription("Transaction DHT start version counts map 
size.")
     public int getTxDhtStartVersionCountsSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction DHT committed ID map size.")
+    @Override @MXBeanDescription("Transaction DHT committed ID map size.")
     public int getTxDhtCommittedVersionsSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Transaction DHT rolled back ID map size.")
+    @Override @MXBeanDescription("Transaction DHT rolled back ID map size.")
     public int getTxDhtRolledbackVersionsSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True if write-behind is enabled for this cache.")
+    @Override @MXBeanDescription("True if write-behind is enabled for this 
cache.")
     public boolean isWriteBehindEnabled();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Size of internal buffer that triggers flush 
procedure.")
+    @Override @MXBeanDescription("Size of internal buffer that triggers flush 
procedure.")
     public int getWriteBehindFlushSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Count of flush threads.")
+    @Override @MXBeanDescription("Count of flush threads.")
     public int getWriteBehindFlushThreadCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Flush frequency interval in milliseconds.")
+    @Override @MXBeanDescription("Flush frequency interval in milliseconds.")
     public long getWriteBehindFlushFrequency();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Maximum size of batch for similar operations.")
+    @Override @MXBeanDescription("Maximum size of batch for similar 
operations.")
     public int getWriteBehindStoreBatchSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Count of cache overflow events since write-behind 
cache has started.")
+    @Override @MXBeanDescription("Count of cache overflow events since 
write-behind cache has started.")
     public int getWriteBehindTotalCriticalOverflowCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Count of cache overflow events since write-behind 
cache has started.")
+    @Override @MXBeanDescription("Count of cache overflow events since 
write-behind cache has started.")
     public int getWriteBehindCriticalOverflowCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Count of cache cache entries that are currently in 
retry state.")
+    @Override @MXBeanDescription("Count of cache cache entries that are 
currently in retry state.")
     public int getWriteBehindErrorRetryCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Count of cache entries that are waiting to be 
flushed.")
+    @Override @MXBeanDescription("Count of cache entries that are waiting to 
be flushed.")
     public int getWriteBehindBufferSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Key type.")
+    @Override @MXBeanDescription("Key type.")
     public String getKeyType();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Value type.")
+    @Override @MXBeanDescription("Value type.")
     public String getValueType();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True if the cache is store by value.")
+    @Override @MXBeanDescription("True if the cache is store by value.")
     public boolean isStoreByValue();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True if statistics collection is enabled.")
+    @Override @MXBeanDescription("True if statistics collection is enabled.")
     public boolean isStatisticsEnabled();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True if management is enabled.")
+    @Override @MXBeanDescription("True if management is enabled.")
     public boolean isManagementEnabled();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True when a cache is in read-through mode.")
+    @Override @MXBeanDescription("True when a cache is in read-through mode.")
     public boolean isReadThrough();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True when a cache is in write-through mode.")
+    @Override @MXBeanDescription("True when a cache is in write-through mode.")
     public boolean isWriteThrough();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True when a cache topology is valid for read 
operations.")
+    @Override @MXBeanDescription("True when a cache topology is valid for read 
operations.")
     public boolean isValidForReading();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("True when a cache topology is valid for write 
operations.")
+    @Override @MXBeanDescription("True when a cache topology is valid for 
write operations.")
     public boolean isValidForWriting();
 
     /**

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/mxbean/ClusterMetricsMXBean.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/mxbean/ClusterMetricsMXBean.java 
b/modules/core/src/main/java/org/apache/ignite/mxbean/ClusterMetricsMXBean.java
index 537cef7..ffb4080 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/mxbean/ClusterMetricsMXBean.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/mxbean/ClusterMetricsMXBean.java
@@ -27,234 +27,234 @@ import org.apache.ignite.cluster.ClusterMetrics;
 @MXBeanDescription("MBean that provides access to aggregated cluster metrics.")
 public interface ClusterMetricsMXBean extends ClusterMetrics {
     /** {@inheritDoc} */
-    @MXBeanDescription("Last update time of this node metrics.")
+    @Override @MXBeanDescription("Last update time of this node metrics.")
     public long getLastUpdateTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Maximum number of jobs that ever ran concurrently on 
this node.")
+    @Override @MXBeanDescription("Maximum number of jobs that ever ran 
concurrently on this node.")
     public int getMaximumActiveJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of currently active jobs concurrently executing 
on the node.")
+    @Override @MXBeanDescription("Number of currently active jobs concurrently 
executing on the node.")
     public int getCurrentActiveJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average number of active jobs concurrently executing 
on the node.")
+    @Override @MXBeanDescription("Average number of active jobs concurrently 
executing on the node.")
     public float getAverageActiveJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Maximum number of waiting jobs this node had.")
+    @Override @MXBeanDescription("Maximum number of waiting jobs this node 
had.")
     public int getMaximumWaitingJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of queued jobs currently waiting to be 
executed.")
+    @Override @MXBeanDescription("Number of queued jobs currently waiting to 
be executed.")
     public int getCurrentWaitingJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average number of waiting jobs this node had queued.")
+    @Override @MXBeanDescription("Average number of waiting jobs this node had 
queued.")
     public float getAverageWaitingJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Maximum number of jobs rejected at once during a 
single collision resolution operation.")
+    @Override @MXBeanDescription("Maximum number of jobs rejected at once 
during a single collision resolution operation.")
     public int getMaximumRejectedJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of jobs rejected after more recent collision 
resolution operation.")
+    @Override @MXBeanDescription("Number of jobs rejected after more recent 
collision resolution operation.")
     public int getCurrentRejectedJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average number of jobs this node rejects during 
collision resolution operations.")
+    @Override @MXBeanDescription("Average number of jobs this node rejects 
during collision resolution operations.")
     public float getAverageRejectedJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription(
+    @Override @MXBeanDescription(
         "Total number of jobs this node rejects during collision resolution 
operations since node startup.")
     public int getTotalRejectedJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Maximum number of cancelled jobs this node ever had 
running concurrently.")
+    @Override @MXBeanDescription("Maximum number of cancelled jobs this node 
ever had running concurrently.")
     public int getMaximumCancelledJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Number of cancelled jobs that are still running.")
+    @Override @MXBeanDescription("Number of cancelled jobs that are still 
running.")
     public int getCurrentCancelledJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average number of cancelled jobs this node ever had 
running concurrently.")
+    @Override @MXBeanDescription("Average number of cancelled jobs this node 
ever had running concurrently.")
     public float getAverageCancelledJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total number of cancelled jobs since node startup.")
+    @Override @MXBeanDescription("Total number of cancelled jobs since node 
startup.")
     public int getTotalCancelledJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total number of jobs handled by the node.")
+    @Override @MXBeanDescription("Total number of jobs handled by the node.")
     public int getTotalExecutedJobs();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total time all finished jobs takes to execute on the 
node.")
+    @Override @MXBeanDescription("Total time all finished jobs takes to 
execute on the node.")
     public long getTotalJobsExecutionTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Maximum time a job ever spent waiting in a queue to be 
executed.")
+    @Override @MXBeanDescription("Maximum time a job ever spent waiting in a 
queue to be executed.")
     public long getMaximumJobWaitTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Current wait time of oldest job.")
+    @Override @MXBeanDescription("Current wait time of oldest job.")
     public long getCurrentJobWaitTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time jobs spend waiting in the queue to be 
executed.")
+    @Override @MXBeanDescription("Average time jobs spend waiting in the queue 
to be executed.")
     public double getAverageJobWaitTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Time it took to execute the longest job on the node.")
+    @Override @MXBeanDescription("Time it took to execute the longest job on 
the node.")
     public long getMaximumJobExecuteTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Longest time a current job has been executing for.")
+    @Override @MXBeanDescription("Longest time a current job has been 
executing for.")
     public long getCurrentJobExecuteTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time a job takes to execute on the node.")
+    @Override @MXBeanDescription("Average time a job takes to execute on the 
node.")
     public double getAverageJobExecuteTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total number of tasks handled by the node.")
+    @Override @MXBeanDescription("Total number of tasks handled by the node.")
     public int getTotalExecutedTasks();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total time this node spent executing jobs.")
+    @Override @MXBeanDescription("Total time this node spent executing jobs.")
     public long getTotalBusyTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total time this node spent idling (not executing any 
jobs).")
+    @Override @MXBeanDescription("Total time this node spent idling (not 
executing any jobs).")
     public long getTotalIdleTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Time this node spend idling since executing last job.")
+    @Override @MXBeanDescription("Time this node spend idling since executing 
last job.")
     public long getCurrentIdleTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Percentage of time this node is busy executing jobs 
vs. idling.")
+    @Override @MXBeanDescription("Percentage of time this node is busy 
executing jobs vs. idling.")
     public float getBusyTimePercentage();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Percentage of time this node is idling vs. executing 
jobs.")
+    @Override @MXBeanDescription("Percentage of time this node is idling vs. 
executing jobs.")
     public float getIdleTimePercentage();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The number of CPUs available to the Java Virtual 
Machine.")
+    @Override @MXBeanDescription("The number of CPUs available to the Java 
Virtual Machine.")
     public int getTotalCpus();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The system load average; or a negative value if not 
available.")
+    @Override @MXBeanDescription("The system load average; or a negative value 
if not available.")
     public double getCurrentCpuLoad();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average of CPU load values over all metrics kept in 
the history.")
+    @Override @MXBeanDescription("Average of CPU load values over all metrics 
kept in the history.")
     public double getAverageCpuLoad();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Average time spent in GC since the last update.")
+    @Override @MXBeanDescription("Average time spent in GC since the last 
update.")
     public double getCurrentGcCpuLoad();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The initial size of memory in bytes; -1 if undefined.")
+    @Override @MXBeanDescription("The initial size of memory in bytes; -1 if 
undefined.")
     public long getHeapMemoryInitialized();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Current heap size that is used for object allocation.")
+    @Override @MXBeanDescription("Current heap size that is used for object 
allocation.")
     public long getHeapMemoryUsed();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The amount of committed memory in bytes.")
+    @Override @MXBeanDescription("The amount of committed memory in bytes.")
     public long getHeapMemoryCommitted();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The maximum amount of memory in bytes; -1 if 
undefined.")
+    @Override @MXBeanDescription("The maximum amount of memory in bytes; -1 if 
undefined.")
     public long getHeapMemoryMaximum();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The total amount of memory in bytes; -1 if undefined.")
+    @Override @MXBeanDescription("The total amount of memory in bytes; -1 if 
undefined.")
     public long getHeapMemoryTotal();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The initial size of memory in bytes; -1 if undefined.")
+    @Override @MXBeanDescription("The initial size of memory in bytes; -1 if 
undefined.")
     public long getNonHeapMemoryInitialized();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Current non-heap memory size that is used by Java VM.")
+    @Override @MXBeanDescription("Current non-heap memory size that is used by 
Java VM.")
     public long getNonHeapMemoryUsed();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Amount of non-heap memory in bytes that is committed 
for the JVM to use.")
+    @Override @MXBeanDescription("Amount of non-heap memory in bytes that is 
committed for the JVM to use.")
     public long getNonHeapMemoryCommitted();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Maximum amount of non-heap memory in bytes that can " +
+    @Override @MXBeanDescription("Maximum amount of non-heap memory in bytes 
that can " +
         "be used for memory management. -1 if undefined.")
     public long getNonHeapMemoryMaximum();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total amount of non-heap memory in bytes that can " +
+    @Override @MXBeanDescription("Total amount of non-heap memory in bytes 
that can " +
         "be used for memory management. -1 if undefined.")
     public long getNonHeapMemoryTotal();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Uptime of the JVM in milliseconds.")
+    @Override @MXBeanDescription("Uptime of the JVM in milliseconds.")
     public long getUpTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Start time of the JVM in milliseconds.")
+    @Override @MXBeanDescription("Start time of the JVM in milliseconds.")
     public long getStartTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Current number of live threads.")
+    @Override @MXBeanDescription("Current number of live threads.")
     public int getCurrentThreadCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The peak live thread count.")
+    @Override @MXBeanDescription("The peak live thread count.")
     public int getMaximumThreadCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("The total number of threads started.")
+    @Override @MXBeanDescription("The total number of threads started.")
     public long getTotalStartedThreadCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Current number of live daemon threads.")
+    @Override @MXBeanDescription("Current number of live daemon threads.")
     public int getCurrentDaemonThreadCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Last data version.")
+    @Override @MXBeanDescription("Last data version.")
     public long getLastDataVersion();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Sent messages count.")
+    @Override @MXBeanDescription("Sent messages count.")
     public int getSentMessagesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Sent bytes count.")
+    @Override @MXBeanDescription("Sent bytes count.")
     public long getSentBytesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Received messages count.")
+    @Override @MXBeanDescription("Received messages count.")
     public int getReceivedMessagesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Received bytes count.")
+    @Override @MXBeanDescription("Received bytes count.")
     public long getReceivedBytesCount();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Outbound messages queue size.")
+    @Override @MXBeanDescription("Outbound messages queue size.")
     public int getOutboundMessagesQueueSize();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Start time of the grid node in milliseconds.")
+    @Override @MXBeanDescription("Start time of the grid node in 
milliseconds.")
     public long getNodeStartTime();
 
     /** {@inheritDoc} */
-    @MXBeanDescription("Total number of nodes.")
+    @Override @MXBeanDescription("Total number of nodes.")
     public int getTotalNodes();
 
     /**

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/TcpCommunicationConnectionCheckFuture.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/TcpCommunicationConnectionCheckFuture.java
 
b/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/TcpCommunicationConnectionCheckFuture.java
index c42fa57..46fdb0b 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/TcpCommunicationConnectionCheckFuture.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/spi/communication/tcp/internal/TcpCommunicationConnectionCheckFuture.java
@@ -339,12 +339,12 @@ public class TcpCommunicationConnectionCheckFuture 
extends GridFutureAdapter<Bit
         }
 
         /** {@inheritDoc} */
-        public void onTimeout() {
+        @Override public void onTimeout() {
             cancel();
         }
 
         /** {@inheritDoc} */
-        public void onConnected(UUID rmtNodeId) {
+        @Override public void onConnected(UUID rmtNodeId) {
             finish(nodeId(nodeIdx).equals(rmtNodeId));
         }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ClientImpl.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ClientImpl.java
 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ClientImpl.java
index afdffaf..c88ef20 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ClientImpl.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ClientImpl.java
@@ -2569,7 +2569,7 @@ class ClientImpl extends TcpDiscoveryImpl {
         }
 
         /** {@inheritDoc} */
-        public String toString() {
+        @Override public String toString() {
             return sock.toString();
         }
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ServerImpl.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ServerImpl.java
 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ServerImpl.java
index 4ac27f6..3e7537a 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ServerImpl.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ServerImpl.java
@@ -2511,7 +2511,7 @@ class ServerImpl extends TcpDiscoveryImpl {
          *
          * @return Non-discarded messages iterator.
          */
-        public Iterator<TcpDiscoveryAbstractMessage> iterator() {
+        @Override public Iterator<TcpDiscoveryAbstractMessage> iterator() {
             return new SkipIterator();
         }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpi.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpi.java
 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpi.java
index 1c4bf54..d8dc8f8 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpi.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/TcpDiscoverySpi.java
@@ -2195,7 +2195,7 @@ public class TcpDiscoverySpi extends IgniteSpiAdapter 
implements IgniteDiscovery
     }
 
     /** {@inheritDoc} */
-    public void clientReconnect() throws IgniteSpiException {
+    @Override public void clientReconnect() throws IgniteSpiException {
         impl.reconnect();
     }
 
@@ -2282,7 +2282,7 @@ public class TcpDiscoverySpi extends IgniteSpiAdapter 
implements IgniteDiscovery
      * <p>
      * This method is intended for test purposes only.
      */
-    public void simulateNodeFailure() {
+    @Override public void simulateNodeFailure() {
         impl.simulateNodeFailure();
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/TcpDiscoveryNode.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/TcpDiscoveryNode.java
 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/TcpDiscoveryNode.java
index 6c7d8e1..13d1006 100644
--- 
a/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/TcpDiscoveryNode.java
+++ 
b/modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/internal/TcpDiscoveryNode.java
@@ -229,7 +229,7 @@ public class TcpDiscoveryNode extends 
GridMetadataAwareAdapter implements Ignite
      *
      * @param consistentId Consistent globally unique node ID.
      */
-    public void setConsistentId(Serializable consistentId) {
+    @Override public void setConsistentId(Serializable consistentId) {
         this.consistentId = consistentId;
 
         final Map<String, Object> map = new HashMap<>(attrs);
@@ -291,14 +291,14 @@ public class TcpDiscoveryNode extends 
GridMetadataAwareAdapter implements Ignite
     }
 
     /** {@inheritDoc} */
-    public void setMetrics(ClusterMetrics metrics) {
+    @Override public void setMetrics(ClusterMetrics metrics) {
         assert metrics != null;
 
         this.metrics = metrics;
     }
 
     /** {@inheritDoc} */
-    public Map<Integer, CacheMetrics> cacheMetrics() {
+    @Override public Map<Integer, CacheMetrics> cacheMetrics() {
         if (metricsProvider != null) {
             Map<Integer, CacheMetrics> cacheMetrics0 = 
metricsProvider.cacheMetrics();
 
@@ -311,7 +311,7 @@ public class TcpDiscoveryNode extends 
GridMetadataAwareAdapter implements Ignite
     }
 
     /** {@inheritDoc} */
-    public void setCacheMetrics(Map<Integer, CacheMetrics> cacheMetrics) {
+    @Override public void setCacheMetrics(Map<Integer, CacheMetrics> 
cacheMetrics) {
         this.cacheMetrics = cacheMetrics != null ? cacheMetrics : 
Collections.<Integer, CacheMetrics>emptyMap();
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/main/java/org/apache/ignite/ssl/SslContextFactory.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/main/java/org/apache/ignite/ssl/SslContextFactory.java 
b/modules/core/src/main/java/org/apache/ignite/ssl/SslContextFactory.java
index c514b0f..edff5c9 100644
--- a/modules/core/src/main/java/org/apache/ignite/ssl/SslContextFactory.java
+++ b/modules/core/src/main/java/org/apache/ignite/ssl/SslContextFactory.java
@@ -477,7 +477,7 @@ public class SslContextFactory implements 
Factory<SSLContext> {
     }
 
     /** {@inheritDoc} */
-    public String toString() {
+    @Override public String toString() {
         return getClass().getSimpleName() + parameters();
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/cache/IgniteCacheEntryProcessorSequentialCallTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/cache/IgniteCacheEntryProcessorSequentialCallTest.java
 
b/modules/core/src/test/java/org/apache/ignite/cache/IgniteCacheEntryProcessorSequentialCallTest.java
index 592449d..165bca7 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/cache/IgniteCacheEntryProcessorSequentialCallTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/cache/IgniteCacheEntryProcessorSequentialCallTest.java
@@ -252,7 +252,7 @@ public class IgniteCacheEntryProcessorSequentialCallTest 
extends GridCommonAbstr
      */
     public static class NotNullCacheEntryProcessor implements 
CacheEntryProcessor<TestKey, TestValue, Object> {
         /** {@inheritDoc} */
-        public Object process(MutableEntry entry, Object... arguments) throws 
EntryProcessorException {
+        @Override public Object process(MutableEntry entry, Object... 
arguments) throws EntryProcessorException {
             assertNotNull(entry.getValue());
 
             return null;

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/cache/store/CacheStoreSessionListenerReadWriteThroughDisabledAbstractTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/cache/store/CacheStoreSessionListenerReadWriteThroughDisabledAbstractTest.java
 
b/modules/core/src/test/java/org/apache/ignite/cache/store/CacheStoreSessionListenerReadWriteThroughDisabledAbstractTest.java
index ab4477d..774d4f7 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/cache/store/CacheStoreSessionListenerReadWriteThroughDisabledAbstractTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/cache/store/CacheStoreSessionListenerReadWriteThroughDisabledAbstractTest.java
@@ -46,7 +46,7 @@ import 
org.apache.ignite.internal.processors.cache.GridCacheAbstractSelfTest;
  */
 public abstract class 
CacheStoreSessionListenerReadWriteThroughDisabledAbstractTest extends 
GridCacheAbstractSelfTest {
     /** {@inheritDoc} */
-    protected int gridCount() {
+    @Override protected int gridCount() {
         return 2;
     }
 
@@ -54,7 +54,7 @@ public abstract class 
CacheStoreSessionListenerReadWriteThroughDisabledAbstractT
     protected final int CNT = 100;
 
     /** {@inheritDoc} */
-    protected CacheConfiguration cacheConfiguration(String igniteInstanceName) 
throws Exception {
+    @Override protected CacheConfiguration cacheConfiguration(String 
igniteInstanceName) throws Exception {
         CacheConfiguration cacheCfg = 
super.cacheConfiguration(igniteInstanceName);
 
         
cacheCfg.setCacheStoreFactory(FactoryBuilder.factoryOf(EmptyCacheStore.class));
@@ -70,7 +70,7 @@ public abstract class 
CacheStoreSessionListenerReadWriteThroughDisabledAbstractT
     }
 
     /** {@inheritDoc} */
-    protected NearCacheConfiguration nearConfiguration() {
+    @Override protected NearCacheConfiguration nearConfiguration() {
         return null;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/failure/FailureHandlerTriggeredTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/failure/FailureHandlerTriggeredTest.java
 
b/modules/core/src/test/java/org/apache/ignite/failure/FailureHandlerTriggeredTest.java
index 8d56ced..23c7e08 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/failure/FailureHandlerTriggeredTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/failure/FailureHandlerTriggeredTest.java
@@ -93,7 +93,7 @@ public class FailureHandlerTriggeredTest extends 
GridCommonAbstractTest {
         }
 
         /** {@inheritDoc} */
-        public SchemaAbstractDiscoveryMessage message() {
+        @Override public SchemaAbstractDiscoveryMessage message() {
             throw new Error("Exchange worker termination");
         }
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/TaskNodeRestartTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/TaskNodeRestartTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/TaskNodeRestartTest.java
index 573804e..7cab4e6 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/TaskNodeRestartTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/TaskNodeRestartTest.java
@@ -180,7 +180,7 @@ public class TaskNodeRestartTest extends 
GridCommonAbstractTest {
      */
     private static class TestTask2 implements ComputeTask<Void, Void> {
         /** {@inheritDoc} */
-        @Nullable public Map<? extends ComputeJob, ClusterNode> 
map(List<ClusterNode> subgrid, Void arg)
+        @Override @Nullable public Map<? extends ComputeJob, ClusterNode> 
map(List<ClusterNode> subgrid, Void arg)
             throws IgniteException {
             Map<TestJob, ClusterNode> jobs = new HashMap<>();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridProjectionForCachesOnDaemonNodeSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridProjectionForCachesOnDaemonNodeSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridProjectionForCachesOnDaemonNodeSelfTest.java
index e32668b..85b2373 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridProjectionForCachesOnDaemonNodeSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridProjectionForCachesOnDaemonNodeSelfTest.java
@@ -77,7 +77,7 @@ public class GridProjectionForCachesOnDaemonNodeSelfTest 
extends GridCommonAbstr
     }
 
     /** {@inheritDoc} */
-    protected void beforeTest() throws Exception {
+    @Override protected void beforeTest() throws Exception {
         ignite.getOrCreateCache(DEFAULT_CACHE_NAME);
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractTest.java
index 862ba6a..370a7a8 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheAbstractTest.java
@@ -218,7 +218,7 @@ public abstract class IgniteCacheAbstractTest extends 
GridCommonAbstractTest {
     /**
      * @return Cache.
      */
-    protected <K, V> IgniteCache<K, V> jcache() {
+    @Override protected <K, V> IgniteCache<K, V> jcache() {
         return jcache(0);
     }
 
@@ -226,7 +226,7 @@ public abstract class IgniteCacheAbstractTest extends 
GridCommonAbstractTest {
      * @param idx Grid index.
      * @return Cache.
      */
-    protected <K, V> IgniteCache<K, V> jcache(int idx) {
+    @Override protected <K, V> IgniteCache<K, V> jcache(int idx) {
         return grid(idx).cache(DEFAULT_CACHE_NAME);
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheStoreValueAbstractTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheStoreValueAbstractTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheStoreValueAbstractTest.java
index 4af0a15..bd259a5 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheStoreValueAbstractTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteCacheStoreValueAbstractTest.java
@@ -504,7 +504,7 @@ public abstract class IgniteCacheStoreValueAbstractTest 
extends IgniteCacheAbstr
         }
 
         /** {@inheritDoc} */
-        public String toString() {
+        @Override public String toString() {
             return "TestValue [val=" + val + ']';
         }
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicCacheStartFailWithPersistenceTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicCacheStartFailWithPersistenceTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicCacheStartFailWithPersistenceTest.java
index 3b7bf52..24c9342 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicCacheStartFailWithPersistenceTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteDynamicCacheStartFailWithPersistenceTest.java
@@ -34,7 +34,7 @@ public class IgniteDynamicCacheStartFailWithPersistenceTest 
extends IgniteAbstra
         return 5 * 60 * 1000;
     }
 
-    protected boolean persistenceEnabled() {
+    @Override protected boolean persistenceEnabled() {
         return true;
     }
 
@@ -75,7 +75,7 @@ public class IgniteDynamicCacheStartFailWithPersistenceTest 
extends IgniteAbstra
     }
 
     /** {@inheritDoc} */
-    protected void checkCacheOperations(IgniteCache<Integer, Value> cache) 
throws Exception {
+    @Override protected void checkCacheOperations(IgniteCache<Integer, Value> 
cache) throws Exception {
         super.checkCacheOperations(cache);
 
         // Disable write-ahead log.

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorCacheGroupsAbstractTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorCacheGroupsAbstractTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorCacheGroupsAbstractTest.java
index 3070d9d..8613225 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorCacheGroupsAbstractTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/IgniteTopologyValidatorCacheGroupsAbstractTest.java
@@ -79,7 +79,7 @@ public abstract class 
IgniteTopologyValidatorCacheGroupsAbstractTest extends Ign
     /**
      * @throws Exception If failed.
      */
-    public void testTopologyValidator() throws Exception {
+    @Override public void testTopologyValidator() throws Exception {
         putValid(DEFAULT_CACHE_NAME);
         remove(DEFAULT_CACHE_NAME);
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryAtomicEntryProcessorDeploymentSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryAtomicEntryProcessorDeploymentSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryAtomicEntryProcessorDeploymentSelfTest.java
index 596cf54..c65f41c 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryAtomicEntryProcessorDeploymentSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/binary/GridCacheBinaryAtomicEntryProcessorDeploymentSelfTest.java
@@ -29,7 +29,7 @@ import 
org.apache.ignite.internal.processors.cache.GridCacheAtomicEntryProcessor
 public class GridCacheBinaryAtomicEntryProcessorDeploymentSelfTest
     extends GridCacheAtomicEntryProcessorDeploymentSelfTest {
     /** {@inheritDoc} */
-    protected IgniteCache getCache() {
+    @Override protected IgniteCache getCache() {
         return grid(1).cache(DEFAULT_CACHE_NAME).withKeepBinary();
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
index 45275f4..81292c7 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/datastructures/GridCacheSequenceApiSelfAbstractTest.java
@@ -91,7 +91,7 @@ public abstract class GridCacheSequenceApiSelfAbstractTest 
extends IgniteAtomics
     }
 
     /** {@inheritDoc} */
-    protected AtomicConfiguration atomicConfiguration() {
+    @Override protected AtomicConfiguration atomicConfiguration() {
         AtomicConfiguration atomicCfg = super.atomicConfiguration();
 
         atomicCfg.setAtomicSequenceReserveSize(BATCH_SIZE);
@@ -138,7 +138,7 @@ public abstract class GridCacheSequenceApiSelfAbstractTest 
extends IgniteAtomics
     }
 
     /** {@inheritDoc} */
-    protected IgniteEx grid() {
+    @Override protected IgniteEx grid() {
         return grid(0);
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledAtomicInvokeRestartSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledAtomicInvokeRestartSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledAtomicInvokeRestartSelfTest.java
index 28f2fe0..89e075d 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledAtomicInvokeRestartSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledAtomicInvokeRestartSelfTest.java
@@ -74,7 +74,7 @@ public class CacheNearDisabledAtomicInvokeRestartSelfTest 
extends CacheAbstractR
     }
 
     /** {@inheritDoc} */
-    protected void checkCache(IgniteEx ignite, IgniteCache cache) throws 
Exception {
+    @Override protected void checkCache(IgniteEx ignite, IgniteCache cache) 
throws Exception {
         log.info("Start cache validation.");
 
         long startTime = U.currentTimeMillis();

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledTransactionalInvokeRestartSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledTransactionalInvokeRestartSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledTransactionalInvokeRestartSelfTest.java
index f4eea6c..e5f9e28 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledTransactionalInvokeRestartSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CacheNearDisabledTransactionalInvokeRestartSelfTest.java
@@ -71,7 +71,7 @@ public class 
CacheNearDisabledTransactionalInvokeRestartSelfTest extends CacheAb
     }
 
     /** {@inheritDoc} */
-    protected void checkCache(IgniteEx ignite, IgniteCache cache) {
+    @Override protected void checkCache(IgniteEx ignite, IgniteCache cache) {
         log.info("Start cache validation.");
 
         long startTime = U.currentTimeMillis();

http://git-wip-us.apache.org/repos/asf/ignite/blob/8f52344b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CachePartitionStateTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CachePartitionStateTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CachePartitionStateTest.java
index 3b05ac3..b1c25b7 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CachePartitionStateTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/CachePartitionStateTest.java
@@ -61,7 +61,7 @@ public class CachePartitionStateTest extends 
GridCommonAbstractTest {
     private CacheConfiguration ccfg;
 
     /** {@inheritDoc} */
-    protected IgniteConfiguration getConfiguration(String igniteInstanceName) 
throws Exception {
+    @Override protected IgniteConfiguration getConfiguration(String 
igniteInstanceName) throws Exception {
         IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
 
         ((TcpDiscoverySpi)cfg.getDiscoverySpi()).setIpFinder(ipFinder);

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