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https://issues.apache.org/jira/browse/HBASE-5897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266164#comment-13266164
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Hudson commented on HBASE-5897:
-------------------------------
Integrated in HBase-TRUNK #2834 (See
[https://builds.apache.org/job/HBase-TRUNK/2834/])
HBASE-5897 prePut coprocessor hook causing substantial CPU usage (Revision
1332811)
Result = FAILURE
larsh :
Files :
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
> prePut coprocessor hook causing substantial CPU usage
> -----------------------------------------------------
>
> Key: HBASE-5897
> URL: https://issues.apache.org/jira/browse/HBASE-5897
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Critical
> Fix For: 0.92.2, 0.94.0, 0.96.0
>
> Attachments: 5897-simple.txt, 5897-v2.txt, 5897-v3-0.92.txt,
> 5897-v3-0.94.txt, 5897-v3.txt, hbase-5897.txt,
> testRegionServerCoprocessorExceptionWithRemove.stack
>
>
> I was running an insert workload against trunk under oprofile and saw that a
> significant portion of CPU usage was going to calling the "prePut"
> coprocessor hook inside doMiniBatchPut, even though I don't have any
> coprocessors installed. I ran a million-row insert and collected CPU time
> spent in the RS after commenting out the preput hook, and found CPU usage
> reduced by 33%.
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