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https://issues.apache.org/jira/browse/HBASE-7612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15500379#comment-15500379
 ] 

Hadoop QA commented on HBASE-7612:
----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 18s 
{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s 
{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 
0s {color} | {color:green} The patch appears to include 3 new or modified test 
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 15s 
{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m 
47s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 58s 
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
58s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
32s {color} | {color:green} master passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 0m 31s 
{color} | {color:red} hbase-common in master has 1 extant Findbugs warnings. 
{color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 0m 21s 
{color} | {color:red} hbase-hadoop2-compat in master has 1 extant Findbugs 
warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 53s 
{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 8s 
{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 
11s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 1s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 1s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
58s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
32s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 
0s {color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
29m 40s {color} | {color:green} Patch does not cause any errors with Hadoop 
2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green} 0m 
31s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 
54s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 0s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 52s 
{color} | {color:green} hbase-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 21s 
{color} | {color:green} hbase-hadoop2-compat in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 84m 2s {color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
37s {color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 136m 0s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | 
hadoop.hbase.master.procedure.TestDispatchMergingRegionsProcedure |
| Timed out junit tests | org.apache.hadoop.hbase.client.TestFromClientSide |
|   | 
org.apache.hadoop.hbase.client.TestRestoreSnapshotFromClientWithRegionReplicas |
|   | org.apache.hadoop.hbase.client.TestMobCloneSnapshotFromClient |
|   | org.apache.hadoop.hbase.client.TestMobSnapshotCloneIndependence |
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|| Subsystem || Report/Notes ||
| Docker | Client=1.11.2 Server=1.11.2 Image:yetus/hbase:7bda515 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12829086/HBASE-7612.patch |
| JIRA Issue | HBASE-7612 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  |
| uname | Linux 1bada1ed01b9 3.13.0-92-generic #139-Ubuntu SMP Tue Jun 28 
20:42:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
 |
| git revision | master / 4faa8ea |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3586/artifact/patchprocess/branch-findbugs-hbase-common-warnings.html
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3586/artifact/patchprocess/branch-findbugs-hbase-hadoop2-compat-warnings.html
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3586/artifact/patchprocess/patch-unit-hbase-server.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HBASE-Build/3586/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3586/testReport/ |
| modules | C: hbase-common hbase-hadoop2-compat hbase-server U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3586/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> [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.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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