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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (HBASE-1107) NPE in HStoreScanner.updateReaders
Date Mon, 05 Jan 2009 20:35:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12660907#action_12660907
] 

apurtell edited comment on HBASE-1107 at 1/5/09 12:35 PM:
----------------------------------------------------------------

Concur that the scanner is closed when the observer gets it.

+1

I'll commit. 

      was (Author: apurtell):
    Concur that the scanner is closed when the observer gets it.

+1
  
> NPE in HStoreScanner.updateReaders
> ----------------------------------
>
>                 Key: HBASE-1107
>                 URL: https://issues.apache.org/jira/browse/HBASE-1107
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Critical
>             Fix For: 0.19.0
>
>         Attachments: 1107-1.patch
>
>
> 2009-01-01 23:55:41,629 FATAL org.apache.hadoop.hbase.regionserver.MemcacheFlusher: Replay
of hlog required. Forcing server shutdown
> org.apache.hadoop.hbase.DroppedSnapshotException: region: content,cff13605e2ea6ce0b221ac864687bf08,1230777531253
>         at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:880)
>         at org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:773)
>         at org.apache.hadoop.hbase.regionserver.MemcacheFlusher.flushRegion(MemcacheFlusher.java:227)
>         at org.apache.hadoop.hbase.regionserver.MemcacheFlusher.run(MemcacheFlusher.java:137)
> Caused by: java.lang.NullPointerException
>         at org.apache.hadoop.hbase.regionserver.HStoreScanner.updateReaders(HStoreScanner.java:322)
>         at org.apache.hadoop.hbase.regionserver.HStore.notifyChangedReadersObservers(HStore.java:737)
>         at org.apache.hadoop.hbase.regionserver.HStore.updateReaders(HStore.java:725)
>         at org.apache.hadoop.hbase.regionserver.HStore.internalFlushCache(HStore.java:694)
>         at org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:630)
>         at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:865)
>         ... 3 more

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