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https://issues.apache.org/jira/browse/HBASE-9696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13793050#comment-13793050
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Jeffrey Zhong commented on HBASE-9696:
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I read through the patch which seems ok to me(+1). Since it's hard to cover
all the variations from the new states, I agree you that let's fix new issue if
there're some overlooked factors. Thanks.
> 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, 0.96.1
>
> 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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