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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2986) multi writable can npe causing client hang
Date Wed, 15 Sep 2010 05:16:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2986?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909597#action_12909597
] 

stack commented on HBASE-2986:
------------------------------

Oh, yeah, an NSRE was the prelude to my hang too.

> multi writable can npe causing client hang
> ------------------------------------------
>
>                 Key: HBASE-2986
>                 URL: https://issues.apache.org/jira/browse/HBASE-2986
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.89.20100621
>            Reporter: ryan rawson
>            Assignee: ryan rawson
>            Priority: Blocker
>             Fix For: 0.90.0
>
>         Attachments: HBASE-2986.txt
>
>
> I have this backtrace:
> } org.apache.hadoop.hbase.NotServingRegionException: usertable,,1284159178472.010c503fa9c9f12bd0fd9551ede360ec.
is closed
>         at org.apache.hadoop.hbase.regionserver.HRegion.startRegionOperation(HRegion.java:3068)
>         at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:1248)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.put(HRegionServer.java:1709)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:2412)
>         at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:557)
>         at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1007)
> 2010-09-10 16:00:56,808 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 15
on 60020 caught: java.lang.NullPointerException
>         at org.apache.hadoop.hbase.client.MultiResponse.write(MultiResponse.java:92)
>         at org.apache.hadoop.hbase.io.HbaseObjectWritable.writeObject(HbaseObjectWritable.java:376)
>         at org.apache.hadoop.hbase.io.HbaseObjectWritable.write(HbaseObjectWritable.java:242)
>         at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1029)
> After this happened my client just sat there and didnt go anywhere.

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