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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4528) The put operation can release the rowlock before sync-ing the Hlog
Date Wed, 05 Sep 2012 00:59:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13448306#comment-13448306
] 

Hudson commented on HBASE-4528:
-------------------------------

Integrated in HBase-0.94-security-on-Hadoop-23 #7 (See [https://builds.apache.org/job/HBase-0.94-security-on-Hadoop-23/7/])
    HBASE-6321  ReplicationSource dies reading the peer's id
HBASE-6647  [performance regression] appendNoSync/HBASE-4528 doesn't
            take deferred log flush into account (Revision 1379290)

     Result = FAILURE
jdcryans : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLog.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/replication/ReplicationZookeeper.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSource.java

                
> The put operation can release the rowlock before sync-ing the Hlog
> ------------------------------------------------------------------
>
>                 Key: HBASE-4528
>                 URL: https://issues.apache.org/jira/browse/HBASE-4528
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>             Fix For: 0.94.0
>
>         Attachments: 4528-trunk.txt, 4528-trunk-v9.txt, appendNoSync5.txt, appendNoSyncPut1.txt,
appendNoSyncPut2.txt, appendNoSyncPut3.txt, appendNoSyncPut4.txt, appendNoSyncPut5.txt, appendNoSyncPut6.txt,
appendNoSyncPut7.txt, appendNoSyncPut8.txt, HBASE-4528-Trunk-FINAL.patch
>
>
> This allows for better throughput when there are hot rows. A single row update improves
from 100 puts/sec/server to 5000 puts/sec/server.

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