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https://issues.apache.org/jira/browse/HBASE-2700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12882275#action_12882275
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Todd Lipcon commented on HBASE-2700:
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Regarding keeping state in memory being untenable, what's the reasoning here?
HDFS manages to keep all of the blocks in memory, and the number of blocks is
WAY bigger than the number of regions. I'm not saying I think we necessarily
have to do it, but I don't think we should rule it out, either.
> Handle master failover for regions in transition
> ------------------------------------------------
>
> Key: HBASE-2700
> URL: https://issues.apache.org/jira/browse/HBASE-2700
> Project: HBase
> Issue Type: Sub-task
> Components: master, zookeeper
> Reporter: Jonathan Gray
> Priority: Critical
> Fix For: 0.21.0
>
>
> To this point in HBASE-2692 tasks we have moved everything for regions in
> transition into ZK, but we have not fully handled the master failover case.
> This is to deal with that and to write tests for it.
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