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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2700) Handle master failover for regions in transition
Date Thu, 24 Jun 2010 22:55:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12882384#action_12882384
] 

stack commented on HBASE-2700:
------------------------------

We seem to be making progress on this thread.  Looks like we've saved having to have a server
list up in zk.

.bq I'm interested in a scenario where region state up in zk is not sufficient or not representative.

I don't have specifics.  Past experience would have it that there'll likely be holes or transition
modes we didn't consider.

.bq I see you have no confidence in ZK....

You have me wrong here.  Doing transitions via ZK has my total endorsement.  I look forward
to the fat patches that move us there.

> 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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