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Date: Thu, 6 Dec 2007 14:50:43 -0800 (PST)
From: "Jim Kellerman (JIRA)" <jira@apache.org>
To: hadoop-dev@lucene.apache.org
Subject: [jira] Updated: (HADOOP-2338) [hbase] NPE in master server
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     [ https://issues.apache.org/jira/browse/HADOOP-2338?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Kellerman updated HADOOP-2338:
----------------------------------

    Status: Patch Available  (was: Open)

> [hbase] NPE in master server
> ----------------------------
>
>                 Key: HADOOP-2338
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2338
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/hbase
>    Affects Versions: 0.16.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>            Priority: Critical
>             Fix For: 0.16.0
>
>         Attachments: master.log.gz, patch.txt, patch.txt
>
>
> Master gets an NPE after receiving multiple responses from the same server telling the master it has opened a region.
> {code}
> 2007-12-02 20:31:37,515 DEBUG hbase.HRegion - Next sequence id for region postlog,img254/577/02suecia024richardburnson0.jpg,1196619667879 is 73377537
> 2007-12-02 20:31:37,517 INFO  hbase.HRegion - region postlog,img254/577/02suecia024richardburnson0.jpg,1196619667879 available
> 2007-12-02 20:31:39,200 WARN  hbase.HRegionServer - Processing message (Retry: 0)
> java.io.IOException: java.io.IOException: java.lang.NullPointerException
>     at org.apache.hadoop.hbase.HMaster.processMsgs(HMaster.java :1484)
>     at org.apache.hadoop.hbase.HMaster.regionServerReport(HMaster.java:1423)
>     at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java :25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379)
>     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596)
>     at sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method)
>     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java :27)
>     at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>     at org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:82)
>     at org.apache.hadoop.hbase.RemoteExceptionHandler.checkIOException (RemoteExceptionHandler.java:48)
>     at org.apache.hadoop.hbase.HRegionServer.run(HRegionServer.java:759)
>     at java.lang.Thread.run(Thread.java:619)
>       case HMsg.MSG_REPORT_PROCESS_OPEN:
>         synchronized ( this.assignAttempts) {
>           // Region server has acknowledged request to open region.
>           // Extend region open time by 1/2 max region open time.
> **1484**          assignAttempts.put(region.getRegionName (), 
>               Long.valueOf(assignAttempts.get(
>                   region.getRegionName()).longValue() +
>                   (this.maxRegionOpenTime / 2)));
>         }
>         break;
> {code}

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