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From "Zhihong Yu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5033) Opening/Closing store in parallel to reduce region open/close time
Date Thu, 12 Jan 2012 01:21:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13184631#comment-13184631
] 

Zhihong Yu commented on HBASE-5033:
-----------------------------------

Integrated to TRUNK.

Thanks for the patch, Liyin.

Thanks for the review Lars and Kannan.

Hopefully I got commit message right :-)
                
> Opening/Closing store in parallel to reduce region open/close time
> ------------------------------------------------------------------
>
>                 Key: HBASE-5033
>                 URL: https://issues.apache.org/jira/browse/HBASE-5033
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Liyin Tang
>            Assignee: Liyin Tang
>             Fix For: 0.94.0
>
>         Attachments: 5033-trunk.txt, 5033.txt, D933.1.patch, D933.2.patch, D933.3.patch,
D933.4.patch, D933.5.patch, HBASE-5033.patch
>
>
> Region servers are opening/closing each store and each store file for every store in
sequential fashion, which may cause inefficiency to open/close regions. 
> So this diff is to open/close each store in parallel in order to reduce region open/close
time. Also it would help to reduce the cluster restart time.
> 1) Opening each store in parallel
> 2) Loading each store file for every store in parallel
> 3) Closing each store in parallel
> 4) Closing each store file for every store in parallel.

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