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https://issues.apache.org/jira/browse/HBASE-6977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jimmy Xiang updated HBASE-6977:
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Status: Open (was: Patch Available)
Will address Stack's comments and upload a new patch.
> Multithread processing ZK assignment events
> -------------------------------------------
>
> Key: HBASE-6977
> URL: https://issues.apache.org/jira/browse/HBASE-6977
> Project: HBase
> Issue Type: Improvement
> Components: Region Assignment
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Priority: Minor
> Attachments: trunk-6977_v1.patch, trunk-6977_v2-1.patch
>
>
> Related to HBASE-6976 and HBASE-6611. ZK events processing is a bottle neck
> for assignments, since there is only one ZK event thread. If we can use
> multiple threads, it should be better.
> With multiple threads, the order of events could be messed up. However, if we
> pass all events related to one region always to the same worker thread, the
> order should be kept.
> We need to play with it and find out how much performance imrovement we can
> get.
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