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From "Hadoop QA (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 01:04:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13184625#comment-13184625
] 

Hadoop QA commented on HBASE-5033:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12510282/5033-trunk.txt
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 javadoc.  The javadoc tool appears to have generated -147 warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    -1 findbugs.  The patch appears to introduce 80 new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

     -1 core tests.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat
                  org.apache.hadoop.hbase.mapred.TestTableMapReduce
                  org.apache.hadoop.hbase.mapreduce.TestImportTsv

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/738//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/738//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/738//console

This message is automatically generated.
                
> 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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