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https://issues.apache.org/jira/browse/HBASE-18772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16160606#comment-16160606
 ] 

Hadoop QA commented on HBASE-18772:
-----------------------------------

| (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 
25s{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green}  0m  
0s{color} | {color:green} Patch does not have any anti-patterns. {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 7 new or modified test 
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
37s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 
49s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m  
8s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
25s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  1m 
28s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  4m 
55s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
37s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
19s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
16s{color} | {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
15s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
16s{color} | {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
15s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 16s{color} 
| {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 15s{color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  1m 
27s{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:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  1m  
0s{color} | {color:red} The patch causes 16 errors with Hadoop v2.6.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  2m  
2s{color} | {color:red} The patch causes 16 errors with Hadoop v2.6.2. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  3m  
2s{color} | {color:red} The patch causes 16 errors with Hadoop v2.6.3. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  4m  
2s{color} | {color:red} The patch causes 16 errors with Hadoop v2.6.4. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  5m  
2s{color} | {color:red} The patch causes 16 errors with Hadoop v2.6.5. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  6m  
2s{color} | {color:red} The patch causes 16 errors with Hadoop v2.7.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  7m  
1s{color} | {color:red} The patch causes 16 errors with Hadoop v2.7.2. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  8m  
0s{color} | {color:red} The patch causes 16 errors with Hadoop v2.7.3. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  9m  
1s{color} | {color:red} The patch causes 16 errors with Hadoop v3.0.0-alpha4. 
{color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
14s{color} | {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
15s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m 
13s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  0m 15s{color} 
| {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  0m 15s{color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  8m 
47s{color} | {color:green} hbase-mapreduce in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m 
54s{color} | {color:green} hbase-thrift in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
13s{color} | {color:green} hbase-endpoint in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
19s{color} | {color:green} hbase-it in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
42s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 54m 52s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:5d60123 |
| JIRA Issue | HBASE-18772 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12886330/HBASE-18772.master.patch
 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  |
| uname | Linux e84f77d6b281 3.13.0-116-generic #163-Ubuntu SMP Fri Mar 31 
14:13:22 UTC 2017 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 / 591d86a |
| Default Java | 1.8.0_144 |
| findbugs | v3.1.0-RC3 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-mvninstall-hbase-client.txt
 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-mvninstall-hbase-server.txt
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| compile | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-compile-hbase-client.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-compile-hbase-server.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-compile-hbase-client.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-compile-hbase-server.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-findbugs-hbase-client.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-findbugs-hbase-server.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-javadoc-hbase-server.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-unit-hbase-client.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/testReport/ |
| modules | C: hbase-client hbase-server hbase-mapreduce hbase-thrift 
hbase-endpoint hbase-it U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8549/console |
| Powered by | Apache Yetus 0.4.0   http://yetus.apache.org |


This message was automatically generated.



> [JDK8]  Replace AtomicLong with LongAdder
> -----------------------------------------
>
>                 Key: HBASE-18772
>                 URL: https://issues.apache.org/jira/browse/HBASE-18772
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0-alpha-2
>            Reporter: Yechao Chen
>            Assignee: Yechao Chen
>            Priority: Trivial
>             Fix For: 2.0.0-beta-1
>
>         Attachments: HBASE-18772.master.patch
>
>
> RCurrently we use many AtomicLong in HBase Region Code ,such as BucketCache 
> calss realCacheSize,heapSize,blockNumber,accessCount  and HRegion calss  
> compactionNumBytesCompacted etc .
> In JDK8 LongAdder  is faster than AtomicLong ,should use this replace  
> AtomicLong 



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