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https://issues.apache.org/jira/browse/HBASE-9696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13792959#comment-13792959
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stack commented on HBASE-9696:
------------------------------

3.2 have any other of the feedback from RB?

On commit, make these two match:

+   * RS_ZK_REGION_PENDING_MERGE<br>
+   *
+   * RS has requested to merge two regions. This is to notify master
+   * and check with master if two regions is in states good to merge.
+   */
+  RS_ZK_REQUEST_REGION_MERGE    (11, null),



> 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, 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.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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