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https://issues.apache.org/jira/browse/HBASE-5255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13191877#comment-13191877
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Hudson commented on HBASE-5255:
-------------------------------
Integrated in HBase-TRUNK #2645 (See
[https://builds.apache.org/job/HBase-TRUNK/2645/])
HBASE-5255 Use singletons for OperationStatus to save memory (Benoit)
tedyu :
Files :
* /hbase/trunk/CHANGES.txt
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
*
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/OperationStatus.java
> Use singletons for OperationStatus to save memory
> -------------------------------------------------
>
> Key: HBASE-5255
> URL: https://issues.apache.org/jira/browse/HBASE-5255
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Affects Versions: 0.90.5, 0.92.0
> Reporter: Benoit Sigoure
> Assignee: Benoit Sigoure
> Priority: Minor
> Labels: performance
> Fix For: 0.94.0, 0.92.1
>
> Attachments: 5255-92.txt, 5255-v2.txt,
> HBASE-5255-0.92-Use-singletons-to-remove-unnecessary-memory-allocati.patch,
> HBASE-5255-trunk-Use-singletons-to-remove-unnecessary-memory-allocati.patch
>
>
> Every single {{Put}} causes the allocation of at least one
> {{OperationStatus}}, yet {{OperationStatus}} is almost always stateless, so
> these allocations are unnecessary and could be avoided. Attached patch adds
> a few singletons and uses them, with no public API change. I didn't test the
> patches, but you get the idea.
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