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