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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4562) When split doing offlineParentInMeta encounters error, it'll cause data loss
Date Tue, 18 Oct 2011 05:58:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13129521#comment-13129521
] 

Hudson commented on HBASE-4562:
-------------------------------

Integrated in HBase-0.92 #72 (See [https://builds.apache.org/job/HBase-0.92/72/])
    HBASE-4562  When split doing offlineParentInMeta encounters error, it'll cause data loss

larsh : 
Files : 
* /hbase/branches/0.92/CHANGES.txt
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/regionserver/SplitTransaction.java

                
> When split doing offlineParentInMeta encounters error, it'll cause data loss
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-4562
>                 URL: https://issues.apache.org/jira/browse/HBASE-4562
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.90.4
>            Reporter: bluedavy
>            Assignee: bluedavy
>            Priority: Blocker
>             Fix For: 0.90.5
>
>         Attachments: HBASE-4562-0.90.4.patch, HBASE-4562-0.90.patch, HBASE-4562-0.92.patch,
HBASE-4562-trunk.patch, test-4562-0.90.4.txt, test-4562-0.90.txt, test-4562-0.92.txt, test-4562-trunk.txt
>
>
> Follow below steps to replay the problem:
> 1. change the SplitTransaction.java as below,just like mock the timeout error.
>    {code:title=SplitTransaction.java|borderStyle=solid}
>       if (!testing) {
>         MetaEditor.offlineParentInMeta(server.getCatalogTracker(),
>            this.parent.getRegionInfo(), a.getRegionInfo(), b.getRegionInfo());
>         throw new IOException("some unexpected error in split");
>       }
>    {code} 
> 2. update the regionserver code,restart;
> 3. create a table & put some data to the table;
> 4. split the table;
> 5. kill the regionserver hosted the table;
> 6. wait some time after master ServerShutdownHandler.process execute,then scan the table,u'll
find the data wrote before lost.
> We can fix the bug just use the patch.

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