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https://issues.apache.org/jira/browse/HBASE-7612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15503244#comment-15503244
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Hudson commented on HBASE-7612:
-------------------------------

SUCCESS: Integrated in Jenkins build HBase-Trunk_matrix #1633 (See 
[https://builds.apache.org/job/HBase-Trunk_matrix/1633/])
HBASE-7612 [JDK8] Replace use of high-scale-lib counters with intrinsic 
(zhangduo: rev 6eb6225456f13cce3ab641007737b9ffb0193f24)
* (edit) 
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/MetricsHBaseServerWrapperImpl.java
* (edit) 
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MetricsExecutorImpl.java
* (edit) 
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MutableFastCounter.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFile.java
* (edit) 
hbase-common/src/main/java/org/apache/hadoop/hbase/util/FastLongHistogram.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.java
* (edit) 
hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestFilterListOrOperatorWithBlkCnt.java
* (edit) 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestForceCacheImportantBlocks.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperImpl.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CacheStats.java
* (edit) 
hbase-common/src/main/java/org/apache/hadoop/hbase/trace/SpanReceiverHost.java
* (edit) hbase-common/src/main/java/org/apache/hadoop/hbase/util/Counter.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCacheStats.java
* (edit) 
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MutableHistogram.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcServer.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileScanner.java


> [JDK8] Replace use of high-scale-lib counters with intrinsic facilities
> -----------------------------------------------------------------------
>
>                 Key: HBASE-7612
>                 URL: https://issues.apache.org/jira/browse/HBASE-7612
>             Project: HBase
>          Issue Type: Sub-task
>          Components: metrics
>    Affects Versions: 2.0.0
>            Reporter: Andrew Purtell
>            Assignee: Duo Zhang
>            Priority: Trivial
>             Fix For: 2.0.0
>
>         Attachments: HBASE-7612-v1.patch, HBASE-7612.patch
>
>
> JEP155 introduces a few new classes (DoubleAccumulator, DoubleAdder, 
> LongAccumulator, LongAdder) that "internally employ contention-reduction 
> techniques that provide huge throughput improvements as compared to Atomic 
> variables". There are applications of these where we are currently using 
> Cliff Click's high-scale-lib and for metrics.
> See http://openjdk.java.net/jeps/155



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