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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Warning messages with HBaseTestingUtility.shutdownMiniCluster()
Date Sat, 19 Mar 2011 03:25:01 GMT
I don't think you need to worry about them.
It is common among hbase unit tests:
tyumac:surefire-reports tyu$ grep AsynchronousCloseException *-output.txt |
wc
      91     904   34536
tyumac:surefire-reports tyu$ ls *-output.txt | wc
      83      83    5356

On Fri, Mar 18, 2011 at 5:46 PM, Joe Pallas <pallas@cs.stanford.edu> wrote:

> We're using HBaseTestingUtility's mini-cluster for testing some client
> code.  It works great, except that we sometimes get ugly error messages
> after our tests finish.
>
> I guessed this was because we weren't shutting down the mini-cluster, so I
> added that in.  But calling shutdownMiniCluster() still results in some
> warnings and stack traces (although two of them seem to be from shutdown of
> the HDFS cluster).
>
> Is this normal/expected?  Am I likely to waste more time than it is worth
> trying to fix it?  This is on 0.90.0.
>
> Thanks.
> joe
>
> Sample:
>
> 17:31:51,213  WARN regionserver.handler.CloseRegionHandler:104 - Received
> CLOSE for region Folder,,1300494707186.7b024fb711a7a7e962e4949ee17a05d3. but
> currently not serving
> 17:31:51,288  WARN hbase.regionserver.HRegion:494 - Region
> UserTable,,1300494705653.40e766ad609e0f46871d7a6b488fd669. already closed
> 17:31:51,290  WARN regionserver.handler.CloseRegionHandler:122 - Can't
> close region: was already closed during close():
> UserTable,,1300494705653.40e766ad609e0f46871d7a6b488fd669.
> Shutting down the Mini HDFS Cluster
> Shutting down DataNode 0
> 17:31:52,872  WARN server.datanode.DataNode:137 - DatanodeRegistration(
> 127.0.0.1:59036,
> storageID=DS-541927814-10.132.173.136-59036-1300494697003, infoPort=59037,
> ipcPort=59038):DataXceiveServer:
> java.nio.channels.AsynchronousCloseException
>        at
> java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:185)
>        at
> sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:159)
>        at
> sun.nio.ch.ServerSocketAdaptor.accept(ServerSocketAdaptor.java:84)
>        at
> org.apache.hadoop.hdfs.server.datanode.DataXceiverServer.run(DataXceiverServer.java:130)
>        at java.lang.Thread.run(Thread.java:680)
>
> 17:31:53,993  WARN server.namenode.FSNamesystem:2453 - ReplicationMonitor
> thread received InterruptedException.java.lang.InterruptedException: sleep
> interrupted
>
>

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