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https://issues.apache.org/jira/browse/HBASE-9204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738286#comment-13738286
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Matteo Bertozzi commented on HBASE-9204:
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[~ram_krish] I don't think is the same, that seems just to add missing
daughters to META (but I have to check the code)
anyway that is not related to that problem, since in this case your daughters
are now broken and a region balance or move will trigger an exception on region
startup, since the referenced files are missing.
{code}
parent/file-after-compaction
daughter-1/missing-file.parent
daughter-2/missing-file.parent
{code}
> An Offline SplitParent Region can be assigned breaking split references
> -----------------------------------------------------------------------
>
> Key: HBASE-9204
> URL: https://issues.apache.org/jira/browse/HBASE-9204
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Affects Versions: 0.98.0, 0.95.1, 0.94.10
> Reporter: Matteo Bertozzi
> Priority: Blocker
> Attachments: HBASE-9294-0.94-v0.patch
>
>
> An offline split parent region can be assigned by using 'assign' from shell.
> This may trigger a compaction on the split parent region that should be
> offline, breaking the references of the two daughters.
> The easy way to test this is:
> * disable compactions
> * create a table and insert some row
> * split
> * shutdown the master (otherwise there's a state checked inside the
> AssignmentManager)
> * start the master
> * assign the region marked as OFFLINE => true, SPLIT => true (the compaction
> on region startup will probably break the reference of the two daughters)
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