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https://issues.apache.org/jira/browse/HBASE-4487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118630#comment-13118630
]
Hudson commented on HBASE-4487:
-------------------------------
Integrated in HBase-TRUNK #2274 (See
[https://builds.apache.org/job/HBase-TRUNK/2274/])
HBASE-4487 The increment operation can release the rowlock before sync-ing
the Hlog (dhruba borthakur)
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/wal/HLog.java
*
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestIncrement.java
*
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLogBench.java
*
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALActionsListener.java
*
/hbase/trunk/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSourceManager.java
> The increment operation can release the rowlock before sync-ing the Hlog
> ------------------------------------------------------------------------
>
> Key: HBASE-4487
> URL: https://issues.apache.org/jira/browse/HBASE-4487
> Project: HBase
> Issue Type: Improvement
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Fix For: 0.94.0
>
> Attachments: 4487-v7.txt, appendNoSync4.txt, appendNoSync5.txt,
> appendNoSync6.txt
>
>
> This allows for better throughput when there are hot rows.I have seen this
> change make a single row update improve from 400 increments/sec/server to
> 4000 increments/sec/server.
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