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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1723) [hbase] If master asks region server to shut down, by-pass return of shutdown message
Date Mon, 20 Aug 2007 22:21:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12521258
] 

Hadoop QA commented on HADOOP-1723:
-----------------------------------

+1

http://issues.apache.org/jira/secure/attachment/12364191/HADOOP-1723-patch.txt applied and
successfully tested against trunk revision r567824.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/578/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/578/console

> [hbase] If master asks region server to shut down, by-pass return of shutdown message
> -------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1723
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1723
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/hbase
>    Affects Versions: 0.15.0
>            Reporter: stack
>            Assignee: Jim Kellerman
>            Priority: Trivial
>             Fix For: 0.15.0
>
>         Attachments: HADOOP-1723-patch.txt
>
>
> If master tells cluster to shut down, currently region servers hang on the exit.  They
are trying return to the exited-master a report that they are on the way out.  This report
should not be sent in this scenario.  Here's a log excerpt:
> 2007-08-16 16:56:52,005 DEBUG org.apache.hadoop.hbase.HRegionServer: Got regionserver
stop message
> 2007-08-16 16:56:52,005 INFO org.apache.hadoop.hbase.Leases: closing leases
> 2007-08-16 16:56:52,005 INFO org.apache.hadoop.hbase.Leases: leases closed
> 2007-08-16 16:56:52,005 INFO org.apache.hadoop.ipc.Server: Stopping server on 60010
> 2007-08-16 16:56:52,005 INFO org.apache.hadoop.ipc.Server: IPC Server handler 0 on 60010:
exiting
> ....
> 2007-08-16 16:56:52,007 INFO org.apache.hadoop.hbase.HRegionServer: cacheFlusher exiting
> 2007-08-16 16:56:52,007 DEBUG org.apache.hadoop.hbase.HLog: closing log writer in /bfd/hadoop-stack-data/tmp/hbase/log_208.76.44.139_60010
> 2007-08-16 16:56:52,007 INFO org.apache.hadoop.hbase.HRegionServer: splitOrCompactChecker
exiting
> 2007-08-16 16:56:52,007 INFO org.apache.hadoop.hbase.HRegionServer: logRoller exiting
> 2007-08-16 16:56:52,141 INFO org.apache.hadoop.hbase.HRegionServer: telling master that
region server is shutting down at: 208.76.44.139:60010
> 2007-08-16 16:57:01,990 INFO org.apache.hadoop.hbase.HRegionServer: worker thread exiting
> 2007-08-16 16:57:52,153 WARN org.apache.hadoop.hbase.HRegionServer:
> java.net.SocketTimeoutException: timed out waiting for rpc response
>     at org.apache.hadoop.ipc.Client.call(Client.java:472)
>     at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:165)
>     at $Proxy1.regionServerReport(Unknown Source)
>     at org.apache.hadoop.hbase.HRegionServer.run(HRegionServer.java:767)
>     at java.lang.Thread.run(Thread.java:619)
> 2007-08-16 16:57:52,155 INFO org.apache.hadoop.hbase.HRegionServer: stopping server at:
208.76.44.139:60010
> 2007-08-16 16:57:52,155 INFO org.apache.hadoop.hbase.HRegionServer: HRegionServer stopped
at: 208.76.44.139:60010
> 2007-08-16 16:57:52,155 INFO org.apache.hadoop.hbase.HRegionServer: main thread exiting

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