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https://issues.apache.org/jira/browse/HBASE-4324?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-4324:
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Fix Version/s: (was: 0.95.1)
Not being worked on...Moving out.
> Single unassigned directory is very slow when there are many unassigned nodes
> -----------------------------------------------------------------------------
>
> Key: HBASE-4324
> URL: https://issues.apache.org/jira/browse/HBASE-4324
> Project: HBase
> Issue Type: Bug
> Components: Zookeeper
> Affects Versions: 0.90.4
> Reporter: Todd Lipcon
>
> Because we use a single znode for /unassigned, and we re-list it every time
> its contents change, assignment speed per region is O(number of unassigned
> regions) rather than O(1). Every time something changes about one unassigned
> region, the master has to re-list the entire contents of the directory inside
> of AssignmentManager.nodeChildrenChanged().
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