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https://issues.apache.org/jira/browse/HBASE-20710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16519595#comment-16519595
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Hadoop QA commented on HBASE-20710:
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| (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
12s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 3s{color}
| {color:red} HBASE-20710 does not apply to master. Rebase required? Wrong
Branch? See https://yetus.apache.org/documentation/0.7.0/precommit-patchnames
for help. {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b |
| JIRA Issue | HBASE-20710 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12928647/HBASE-20710-master-v002.patch
|
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/13336/console |
| Powered by | Apache Yetus 0.7.0 http://yetus.apache.org |
This message was automatically generated.
> extra cloneFamily() in Mutation.add(Cell)
> -----------------------------------------
>
> Key: HBASE-20710
> URL: https://issues.apache.org/jira/browse/HBASE-20710
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver
> Affects Versions: 2.0.1
> Reporter: huaxiang sun
> Assignee: huaxiang sun
> Priority: Minor
> Fix For: 2.0.2
>
> Attachments: HBASE-20710-master-v001.patch,
> HBASE-20710-master-v002.patch, HBASE-20710-master-v002.patch,
> alloc-put-fix.svg, alloc-put-orig.svg
>
>
> The cpu profiling shows that during PE randomWrite testing, about 1 percent
> of time is spent in cloneFamily. Reviewing code found that when a cell is DBB
> backed ByteBuffKeyValueCell (which is default with Netty Rpc),
> cell.getFamilyArray() will call cloneFamily() and there is again a
> cloneFamily() in the following line of the code. since this is the critical
> write path processing, this needs to be optimized.
> https://github.com/apache/hbase/blob/master/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Mutation.java#L791
> https://github.com/apache/hbase/blob/master/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Mutation.java#L795
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