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From "Clint Morgan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1256) NPE in StoreFileScanner durring cache flush
Date Wed, 11 Mar 2009 21:34:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681040#action_12681040
] 

Clint Morgan commented on HBASE-1256:
-------------------------------------

My int j =1 fix above seems to have done it. Stacks fix above that is already in the branch..

> NPE in StoreFileScanner durring cache flush
> -------------------------------------------
>
>                 Key: HBASE-1256
>                 URL: https://issues.apache.org/jira/browse/HBASE-1256
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.19.0
>         Environment: latest branch of 0.19 with some unrelated transactional fixes.
> Master, regionserver, and client all in the same JVM
>            Reporter: Clint Morgan
>             Fix For: 0.19.1
>
>
> About an hour into a bulk upload I'm consistently getting:
> org.apache.hadoop.hbase.DroppedSnapshotException: region: net_troove_coin_transaction_Transaction,,1236293201543
> 	at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:902)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:795)
> 	at org.apache.hadoop.hbase.regionserver.MemcacheFlusher.flushRegion(MemcacheFlusher.java:228)
> 	at org.apache.hadoop.hbase.regionserver.MemcacheFlusher.run(MemcacheFlusher.java:138)
> Caused by: java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.regionserver.StoreFileScanner.findFirstRow(StoreFileScanner.java:314)
> 	at org.apache.hadoop.hbase.regionserver.StoreFileScanner.advance(StoreFileScanner.java:141)
> 	at org.apache.hadoop.hbase.regionserver.StoreFileScanner.openReaders(StoreFileScanner.java:109)
> 	at org.apache.hadoop.hbase.regionserver.StoreFileScanner.updateReaders(StoreFileScanner.java:413)
> 	at org.apache.hadoop.hbase.regionserver.HStoreScanner.updateReaders(HStoreScanner.java:346)
> 	at org.apache.hadoop.hbase.regionserver.HStore.notifyChangedReadersObservers(HStore.java:746)
> 	at org.apache.hadoop.hbase.regionserver.HStore.updateReaders(HStore.java:731)
> 	at org.apache.hadoop.hbase.regionserver.HStore.internalFlushCache(HStore.java:700)
> 	at org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:636)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:887)

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