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Posted to issues@hbase.apache.org by "Hudson (Commented) (JIRA)" <ji...@apache.org> on 2012/04/18 23:24:41 UTC
[jira] [Commented] (HBASE-4487) The increment operation can release
the rowlock before sync-ing the Hlog
[ https://issues.apache.org/jira/browse/HBASE-4487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13256980#comment-13256980 ]
Hudson commented on HBASE-4487:
-------------------------------
Integrated in HBase-0.94-security #15 (See [https://builds.apache.org/job/HBase-0.94-security/15/])
HBASE-5782 Edits can be appended out of seqid order since HBASE-4487 (Revision 1327672)
Result = SUCCESS
larsh :
Files :
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLog.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLog.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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