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https://issues.apache.org/jira/browse/HBASE-12035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14315091#comment-14315091
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stack commented on HBASE-12035:
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Since've not published a release where we go via master for state, hopefully
we'll never have to do one of the migration steps. We can file issue if an
issue migrating. I applied to master branch but there are a lot of conflicts
getting this into branch-1. If you have a chance [~octo47], take a look since
you are more familiar w/ the patch. FYI, going forward, add a version as
suffix to your patch name and increment it as you add a new one; it makes life
easier on the committer. Thanks for the great work [~octo47]
> Keep table state in META
> ------------------------
>
> Key: HBASE-12035
> URL: https://issues.apache.org/jira/browse/HBASE-12035
> Project: HBase
> Issue Type: Improvement
> Components: Client, master
> Affects Versions: 2.0.0
> Reporter: Enis Soztutar
> Assignee: Andrey Stepachev
> Priority: Critical
> Fix For: 2.0.0
>
> Attachments: 12035v2.txt, HBASE-12035 (1) (1).patch, HBASE-12035 (1)
> (1).patch, HBASE-12035 (1).patch, HBASE-12035 (2).patch, HBASE-12035
> (2).patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch,
> HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch,
> HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch,
> HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch,
> HBASE-12035.patch, HBASE-12035.patch
>
>
> HBASE-7767 moved table enabled|disabled state to be kept in hdfs instead of
> zookeeper. isTableDisabled() which is used in
> HConnectionImplementation.relocateRegion() now became a master RPC call
> rather than a zookeeper client call. Since we do relocateRegion() calls
> everytime we want to relocate a region (region moved, RS down, etc) this
> implies that when the master is down, the some of the clients for uncached
> regions will be affected.
> See HBASE-7767 and HBASE-11974 for some more background.
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