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From "Chris Trezzo (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4499) [replication] Source shouldn't update ZK if it didn't progress
Date Thu, 29 Sep 2011 20:52:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13117601#comment-13117601
] 

Chris Trezzo commented on HBASE-4499:
-------------------------------------

@J-D

Here is a simple sketch patch. I have not tested it yet.

Chris
                
> [replication] Source shouldn't update ZK if it didn't progress
> --------------------------------------------------------------
>
>                 Key: HBASE-4499
>                 URL: https://issues.apache.org/jira/browse/HBASE-4499
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.90.4
>            Reporter: Jean-Daniel Cryans
>            Priority: Minor
>             Fix For: 0.92.0
>
>
> A relatively minor optimization to be done in ReplicationSource, currently it calls ReplicationSourceManager.logPositionAndCleanOldLogs
whether it made progress or not, generating more load on ZK than necessary. The last position
should be kept around so that we can compare.

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