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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 resolved HBASE-4324.
--------------------------
Resolution: Won't Fix
No longer pertinent (don't keep list of unassigneds in zk now). Could have this
issue when RIT... But Assignment is being redone in 2.0 so none of this stuff
in ZK.
Resolving as no-longer-pertinent.
> 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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