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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1114) Weird NPEs compacting
Date Sun, 11 Jan 2009 08:23:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662743#action_12662743
] 

Andrew Purtell commented on HBASE-1114:
---------------------------------------

No what I mean to say is I am testing a patch that only addresses the NPE around listStatus
in HStore but touches only that one area. This works for me.

> Weird NPEs compacting
> ---------------------
>
>                 Key: HBASE-1114
>                 URL: https://issues.apache.org/jira/browse/HBASE-1114
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>             Fix For: 0.19.0
>
>         Attachments: 1104-filestatus.patch
>
>
> Over on apurtell cluster, hbase TRUNK on hadoop 0.18.0 branch, see below.
> They are weird because first would seem to be an empty fileystem data member and the
second's line number is start of the method and even then, we check for null everywhere first
before doing stuff in here (because of Erik Holstad experience in past).
> {code}
> 2009-01-09 16:28:21,262 INFO org.apache.hadoop.hbase.regionserver.HRegion: starting 
compaction on region content,c84bbfc94b2143e41ba119d159be2958,1231518442461
> 2009-01-09 16:28:21,265 ERROR org.apache.hadoop.hbase.regionserver.CompactSplitThread:
Compaction failed for region content,c84bbfc94b2143e41ba119d159be2958,1231518442461
> java.lang.NullPointerException
>         at org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:869)
>         at org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:709)
>         at org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:666)
>         at org.apache.hadoop.hbase.regionserver.CompactSplitThread.run(CompactSplitThread.java:105)
> 2009-01-09 16:28:45,896 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: java.lang.NullPointerException
> 2009-01-09 16:28:45,896 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 2
on 60020, call next(3999959915225939603, 30) from XX.XX.XX.33:36665: error: java.io.IOException:
java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.checkOOME(HRegionServer.java:696)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.cleanup(HRegionServer.java:664)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.cleanup(HRegionServer.java:648)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1579)
>         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$Server.call(HBaseRPC.java:632)
>         at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> 2009-01-09 16:28:47,947 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: java.lang.NullPointerException
> 2009-01-09 16:28:47,948 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 9
on 60020, call next(3999959915225939603, 30) from XX.XX.XX.33:36665: error: java.io.IOException:
java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.checkOOME(HRegionServer.java:696)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.cleanup(HRegionServer.java:664)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.cleanup(HRegionServer.java:648)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1579)
>         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$Server.call(HBaseRPC.java:632)
>         at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:894)
> {code}

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