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From "nkeywal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-7871) HBase can be stuck in the shutdown
Date Mon, 18 Feb 2013 17:05:12 GMT
nkeywal created HBASE-7871:
------------------------------

             Summary: HBase can be stuck in the shutdown
                 Key: HBASE-7871
                 URL: https://issues.apache.org/jira/browse/HBASE-7871
             Project: HBase
          Issue Type: Bug
          Components: master
    Affects Versions: 0.96.0
            Reporter: nkeywal
         Attachments: TestStartStop.java

The attached test fails ~1% of the the time on 0.96. It seems it does not fail on 0.94.5.
It's simple: a table creation and some puts.

I attach the stack. Logs says nothing it seems.
The suspicious part is:
{noformat}
"RS_CLOSE_REGION-localhost,57575,1361197489166-2" prio=10 tid=0x00007fb0c8775800 nid=0x61ac
runnable [0x00007fb09f272000]
   java.lang.Thread.State: RUNNABLE
        at java.util.TreeMap.fixAfterDeletion(TreeMap.java:2193)
        at java.util.TreeMap.deleteEntry(TreeMap.java:2151)
        at java.util.TreeMap.remove(TreeMap.java:585)
        at java.util.TreeSet.remove(TreeSet.java:259)
        at org.apache.hadoop.hbase.regionserver.MetricsRegionAggregateSourceImpl.deregister(MetricsRegionAggregateSourceImpl.java:55)
        at org.apache.hadoop.hbase.regionserver.MetricsRegionSourceImpl.close(MetricsRegionSourceImpl.java:86)
        at org.apache.hadoop.hbase.regionserver.MetricsRegion.close(MetricsRegion.java:40)
        at org.apache.hadoop.hbase.regionserver.HRegion.doClose(HRegion.java:1063)
        at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:969)
        - locked <0x00000006944e2558> (a java.lang.Object)
        at org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler.process(CloseRegionHandler.java:146)
        at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:203)
        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:662)

{noformat}


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