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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-3346) NPE in processRegionInTransition causing master abort
Date Tue, 30 Oct 2012 21:20:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon resolved HBASE-3346.
--------------------------------

    Resolution: Cannot Reproduce

This has been quiet for a couple years, going to assume it's long gone.
                
> NPE in processRegionInTransition causing master abort
> -----------------------------------------------------
>
>                 Key: HBASE-3346
>                 URL: https://issues.apache.org/jira/browse/HBASE-3346
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.90.0
>            Reporter: Todd Lipcon
>            Priority: Blocker
>
> After the abort in HBASE-3345, I restarted the master, and it crashed again during startup
> 2010-12-13 12:57:00,367 DEBUG org.apache.hadoop.hbase.master.handler.ClosedRegionHandler:
Handling CLOSED event for c5005ca650c7e3bdbab4c8d3e9b7c618
> 2010-12-13 12:57:00,367 DEBUG org.apache.hadoop.hbase.master.AssignmentManager: Table
being disabled so deleting ZK node and removing from regions in transition, skipping assignment
of region usertable
> 2010-12-13 12:57:00,367 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign: master:60000-0x12c780205200116
Deleting existing unassigned node for c5005ca650c7e3bdbab4c8d3e9b7c618 that is in expected
state
> 2010-12-13 12:57:00,367 DEBUG org.apache.hadoop.hbase.zookeeper.ZKUtil: master:60000-0x12c780205200116
Retrieved 127 byte(s) of data from znode /hbase/unassigned/c5005ca650c7e3bdbab4c8d3e9b7c618;
data=
> 2010-12-13 12:57:00,373 DEBUG org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher: master:60000-0x12c780205200116
Received ZooKeeper Event, type=NodeDeleted, state=SyncConnected, path=/hbase/unassigned/
> 2010-12-13 12:57:00,374 DEBUG org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher: master:60000-0x12c780205200116
Received ZooKeeper Event, type=NodeChildrenChanged, state=SyncConnected, path=/hbase/una
> 2010-12-13 12:57:00,374 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign: master:60000-0x12c780205200116
Successfully deleted unassigned node for region c5005ca650c7e3bdbab4c8d3e9b7c618 in expected
sta
> 2010-12-13 12:57:00,374 DEBUG org.apache.hadoop.hbase.zookeeper.ZKUtil: master:60000-0x12c780205200116
Retrieved 114 byte(s) of data from znode /hbase/unassigned/3dc9df76f111271c150c853716ce1f07
and se
> 2010-12-13 12:57:00,376 FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception.
Starting shutdown.
> java.lang.NullPointerException
>         at org.apache.hadoop.hbase.master.AssignmentManager.processRegionInTransition(AssignmentManager.java:263)
>         at org.apache.hadoop.hbase.master.AssignmentManager.processFailover(AssignmentManager.java:222)
>         at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:392)
>         at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:274)
> 2010-12-13 12:57:00,377 INFO org.apache.hadoop.hbase.master.HMaster: Aborting

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