[
https://issues.apache.org/jira/browse/HBASE-11740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Virag Kothari updated HBASE-11740:
----------------------------------
Attachment: HBASE-11740_2.patch
New patch only removes the clone for regionAssignments. Thanks Jimmy for
review. Can we get this in also for 0.98?
> RegionStates.getRegionAssignments() gets stuck on clone
> -------------------------------------------------------
>
> Key: HBASE-11740
> URL: https://issues.apache.org/jira/browse/HBASE-11740
> Project: HBase
> Issue Type: Sub-task
> Components: Region Assignment
> Reporter: Virag Kothari
> Assignee: Virag Kothari
> Attachments: HBASE-11740.patch, HBASE-11740_2.patch
>
>
> This happens in processDeadServersAndRegionsInTransition() on Master startup.
> RegionAssigments is a tree map and TreeMap.clone() is expensive as it builds
> a tree from sorted data (Order of n). There were a million entries in
> RegionAssigments and from jstack, thread was stuck in
> TreeMap.buildFromSorted() for couple of hours.
> Instead of this shadow clone, wrapping as an unmodifiable Map should be
> enough.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
