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From "Clint Morgan (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1256) NPE in StoreFileScanner durring cache flush
Date Wed, 11 Mar 2009 16:02:50 GMT
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


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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