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https://issues.apache.org/jira/browse/HBASE-14489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14909545#comment-14909545
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Hudson commented on HBASE-14489:
--------------------------------
SUCCESS: Integrated in HBase-1.3-IT #187 (See
[https://builds.apache.org/job/HBase-1.3-IT/187/])
HBASE-14489 postScannerFilterRow consumes a lot of CPU. (larsh: rev
45fdcfc23ca6e9bf8f5e50eb15bb9beee7bd6c27)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/SimpleRegionObserver.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRegionObserverInterface.java
> postScannerFilterRow consumes a lot of CPU
> ------------------------------------------
>
> Key: HBASE-14489
> URL: https://issues.apache.org/jira/browse/HBASE-14489
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Labels: performance
> Fix For: 2.0.0, 1.2.0, 1.3.0, 0.98.15, 1.0.3, 1.1.3
>
> Attachments: 14489-0.98.txt, 14489-master.txt
>
>
> During an unrelated test I found that when scanning a tall table with CQ only
> and filtering most results at the server, 50%(!) of time is spend in
> postScannerFilterRow, even though the coprocessor does nothing in that hook.
> We need to find a way not to call this hook when not needed, or to question
> why we have this hook at all.
> I think [~ram_krish] added the hook (or maybe [~anoop.hbase]). I am also not
> sure whether Phoenix uses this hook ([~giacomotaylor]?)
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