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https://issues.apache.org/jira/browse/HBASE-5373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13205108#comment-13205108
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Todd Lipcon commented on HBASE-5373:
------------------------------------

Over in Accumulo land they have a neat framework called "FATE" (FAult Tolerant 
Execution or something?) Basically, they put up a znode in ZK for any 
master-coordinated action, and it acts as an "intent log" of the idempotent 
steps. If there's a failover, the new master will finish off any 
already-running FATE transaction.
                
> Table level lock to prevent the race of multiple table level operation
> ----------------------------------------------------------------------
>
>                 Key: HBASE-5373
>                 URL: https://issues.apache.org/jira/browse/HBASE-5373
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Liyin Tang
>            Assignee: Liyin Tang
>
> A table level lock can guarantee that only one table operation would happen 
> at one time for each table. The master should require and release these table 
> locks correctly during the failover time. One proposal is to keep track of 
> the lock and its corresponding operation in the zookeeper. If there is a 
> master failover, the secondary should have a way to check whether these 
> operations are succeeded nor not before releasing the lock.

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