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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4286) NPE when master shuts down during processing of server shutdowns
Date Wed, 14 Sep 2011 03:22:09 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-4286:
-------------------------

      Tags: noob
    Labels: noob  (was: )

> NPE when master shuts down during processing of server shutdowns
> ----------------------------------------------------------------
>
>                 Key: HBASE-4286
>                 URL: https://issues.apache.org/jira/browse/HBASE-4286
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Todd Lipcon
>              Labels: noob
>
> If the master shuts down while trying to process a server crash, it will escape out of
the loop trying to read META, and then the {{hris}} variable is null. This results in the
following NPE:
> 2011-08-29 16:05:52,436 INFO org.apache.hadoop.hbase.master.handler.ServerShutdownHandler:
Reassigning 0 region(s) that c0317.hal.cloudera.com,60020,1314658642935 was carrying (skipping
0 regions(s) that are already in transition)
> 2011-08-29 16:05:52,436 ERROR org.apache.hadoop.hbase.executor.EventHandler: Caught throwable
while processing event M_META_SERVER_SHUTDOWN
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:207)
> 	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:156)
> 	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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