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https://issues.apache.org/jira/browse/HBASE-5963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13271033#comment-13271033
]
Andrew Purtell commented on HBASE-5963:
---------------------------------------
The bulk of the work here isn't managing the shutdown hook, it is dealing with
the different Hadoop versions through special casing and reflection. If you'd
like to make a more involved change here that introduces a shim and works more
nicely with 2.0, that would be great. I opted for lower risk of breaking 1.0,
CDH, etc. It's definitely a debatable choice.
> ClassCastException: FileSystem$Cache$ClientFinalizer cannot be cast to Thread
> -----------------------------------------------------------------------------
>
> Key: HBASE-5963
> URL: https://issues.apache.org/jira/browse/HBASE-5963
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.0, 0.96.0
> Environment: Bigtop 0.4.0-incubating-SNAPSHOT, Hadoop
> 2.0.0-alpha-SNAPSHOT, HBase 0.94.0-SNAPSHOT
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Attachments: HBASE-5963.patch, HBASE-5963.patch
>
>
> {code}
> 12/05/08 19:49:26 INFO regionserver.HRegionServer: STOPPED: Failed
> initialization
> Exception in thread "main" java.lang.ClassCastException:
> org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer cannot be cast to
> java.lang.Thread
> at
> org.apache.hadoop.hbase.regionserver.ShutdownHook.suppressHdfsShutdownHook(ShutdownHook.java:181)
> at
> org.apache.hadoop.hbase.regionserver.ShutdownHook.install(ShutdownHook.java:82)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.startRegionServer(HRegionServer.java:3601)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.startRegionServer(HRegionServer.java:3585)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:61)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:75)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at
> org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:76)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:3645)
> {code}
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