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https://issues.apache.org/jira/browse/HBASE-9514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770126#comment-13770126
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Elliott Clark commented on HBASE-9514:
--------------------------------------
So I chatted with [~jxiang] about this patch. For me it seems like the region
locks are the perfect solution here. Have the master grab region locks when
the regionserver goes down. Then the splitting server can grab locks.
That should allow the master to ride over any deaths pretty easily, and it uses
the already in hbase mechanisms. However it's a larger patch than the one here.
> Prevent region from assigning before log splitting is done
> ----------------------------------------------------------
>
> Key: HBASE-9514
> URL: https://issues.apache.org/jira/browse/HBASE-9514
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Priority: Blocker
> Attachments: trunk-9514_v1.patch, trunk-9514_v2.patch,
> trunk-9514_v3.patch
>
>
> If a region is assigned before log splitting is done by the server shutdown
> handler, the edits belonging to this region in the hlogs of the dead server
> will be lost.
> Generally this is not an issue if users don't assign/unassign a region from
> hbase shell or via hbase admin. These commands are marked for experts only in
> the hbase shell help too. However, chaos monkey doesn't care.
> If we can prevent from assigning such regions in a bad time, it would make
> things a little safer.
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