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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3346) NPE in processRegionInTransition causing master abort
Date Mon, 13 Dec 2010 21:00:01 GMT
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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