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From "Phabricator (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5033) Opening/Closing store in parallel to reduce region open/close time
Date Mon, 19 Dec 2011 23:23:31 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13172731#comment-13172731
] 

Phabricator commented on HBASE-5033:
------------------------------------

tedyu has commented on the revision "[jira][HBASE-5033][[89-fb]]Opening/Closing store in parallel
to reduce region open/close time".

  Nice work.

  I don't see shutdown() being called on the newly added ThreadPoolExecutor's

INLINE COMMENTS
  src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java:474 Should read 'closing
stores in parallel'

REVISION DETAIL
  https://reviews.facebook.net/D933

                
> 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: D933.1.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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