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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9696) Master recovery ignores online merge znode
Date Sat, 12 Oct 2013 01:34:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13793197#comment-13793197

Enis Soztutar commented on HBASE-9696:

Just wanted to drop a note saying that ITBLL and ITLAV with CM succeeded with this patch on
my setup. Total run time was around 6 hours.  

> Master recovery ignores online merge znode
> ------------------------------------------
>                 Key: HBASE-9696
>                 URL: https://issues.apache.org/jira/browse/HBASE-9696
>             Project: HBase
>          Issue Type: Bug
>          Components: master, Region Assignment
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>             Fix For: 0.98.0, 0.96.0
>         Attachments: 0.96-9696_v3.2.patch, 0.96-9696_v3.3.patch, trunk-9696.patch, trunk-9696_v2.1.patch,
trunk-9696_v2.patch, trunk-9696_v3.1.patch, trunk-9696_v3.2.patch, trunk-9696_v3.3.patch,
trunk-9696_v3.patch, trunk-9696_v3.patch
> The online merge znode uses the new region to be created.  When master restarts, the
new region is still unknown if the merging is not completed. Therefore the znode is ignored,
which should not.  That means the two merging regions could be moved around.  This could cause
some data loss if we are not luck.

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