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https://issues.apache.org/jira/browse/HBASE-3345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack resolved HBASE-3345.
--------------------------
Resolution: Won't Fix
Resolving. Think this is fixed. Will open new issue if see it again.
> Master crash with NPE during table disable
> ------------------------------------------
>
> Key: HBASE-3345
> URL: https://issues.apache.org/jira/browse/HBASE-3345
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Todd Lipcon
> Priority: Blocker
>
> Running on a config that triggers lots of splits, I attempted to disable a
> table while it was getting a lot of load and injected failures. Got the
> following NPE in master, followed by an abort:
> 2010-12-13 12:52:27,323 DEBUG
> org.apache.hadoop.hbase.master.AssignmentManager: Starting unassignment of
> region
> usertable,user1182862181,1292273503885.d223f1dc4d9003508f2db7566518b05d.
> (offlining)
> 2010-12-13 12:52:27,323 FATAL org.apache.hadoop.hbase.master.HMaster: Remote
> unexpected exception
> java.lang.NullPointerException: Passed server is null
> at
> org.apache.hadoop.hbase.master.ServerManager.sendRegionClose(ServerManager.java:581)
> at
> org.apache.hadoop.hbase.master.AssignmentManager.unassign(AssignmentManager.java:1085)
> at
> org.apache.hadoop.hbase.master.AssignmentManager.unassign(AssignmentManager.java:1032)
> at
> org.apache.hadoop.hbase.master.handler.DisableTableHandler$BulkDisabler$1.run(DisableTableHandler.java:132)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
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