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Message-ID: <15121559.204431284561572731.JavaMail.jira@thor>
Date: Wed, 15 Sep 2010 10:39:32 -0400 (EDT)
From: "stack (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Subject: [jira] Updated: (HBASE-2986) multi writable can npe causing client
 hang
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     [ https://issues.apache.org/jira/browse/HBASE-2986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-2986:
-------------------------

          Status: Resolved  (was: Patch Available)
    Hadoop Flags: [Reviewed]
      Resolution: Fixed

Committed.  I fixed up comments so less alarming.  I added the below also so that these kinda of probs are no longer 'silent':

{code}
Index: src/main/java/org/apache/hadoop/hbase/ipc/HBaseServer.java
===================================================================
--- src/main/java/org/apache/hadoop/hbase/ipc/HBaseServer.java  (revision 997346)
+++ src/main/java/org/apache/hadoop/hbase/ipc/HBaseServer.java  (working copy)
@@ -961,7 +961,7 @@
             throw e;
           }
         } catch (Exception e) {
-          LOG.info(getName() + " caught: " +
+          LOG.warn(getName() + " caught: " +
                    StringUtils.stringifyException(e));
         }
       }
{code}

> 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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