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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3345) Master crash with NPE during table disable
Date Mon, 13 Dec 2010 20:58:01 GMT
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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