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https://issues.apache.org/jira/browse/HBASE-5033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183442#comment-13183442
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Zhihong Yu commented on HBASE-5033:
-----------------------------------

@Liyin:
Do you happen to have some performance data when this feature is used ?
                
> 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
>         Attachments: 5033.txt, D933.1.patch, D933.2.patch, D933.3.patch, 
> D933.4.patch, D933.5.patch, HBASE-5033-apach-trunk.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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