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Date: Wed, 30 May 2012 18:54:23 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-6109) Improve RIT performances during
 assignment on large clusters
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    [ https://issues.apache.org/jira/browse/HBASE-6109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13285914#comment-13285914 ] 

stack commented on HBASE-6109:
------------------------------

Thanks N.
                
> Improve RIT performances during assignment on large clusters
> ------------------------------------------------------------
>
>                 Key: HBASE-6109
>                 URL: https://issues.apache.org/jira/browse/HBASE-6109
>             Project: HBase
>          Issue Type: Improvement
>          Components: master
>    Affects Versions: 0.96.0
>            Reporter: nkeywal
>            Assignee: nkeywal
>            Priority: Minor
>             Fix For: 0.96.0
>
>         Attachments: 6109.v19.patch, 6109.v21.patch, 6109.v7.patch
>
>
> The main points in this patch are:
>  - lowering the number of copy of the RIT list
>  - lowering the number of synchronization
>  - synchronizing on a region rather than on everything
> It also contains:
>  - some fixes around the RIT notification: the list was sometimes modified without a corresponding 'notify'.
>  - some tests flakiness correction, actually unrelated to this patch.

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