NPE caused by StoreFileScanner.updateReaders
--------------------------------------------
Key: HBASE-750
URL: https://issues.apache.org/jira/browse/HBASE-750
Project: Hadoop HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 0.2.0
Environment: CentOS 5.1 x86_64 / 64-bit JDK build 1.6.0_03-b05
Reporter: Andrew Purtell
Running a test to determine performance during inserts of many 100,000s of
cells into a single column family in a single row, the region server involved
went down after taking a NPE:
2008-07-17 18:12:18,051 FATAL org.apache.hadoop.hbase.regionserver.Flusher:
Replay of hlog required. Forcing server restart
org.apache.hadoop.hbase.DroppedSnapshotException
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1040)
at
org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:942)
at
org.apache.hadoop.hbase.regionserver.Flusher.flushRegion(Flusher.java:174)
at org.apache.hadoop.hbase.regionserver.Flusher.run(Flusher.java:93)
Caused by: java.lang.NullPointerException
at java.lang.String.<init>(String.java:516)
at org.apache.hadoop.hbase.util.Bytes.toString(Bytes.java:71)
at
org.apache.hadoop.hbase.regionserver.StoreFileScanner.updateReaders(StoreFileScanner.java:374)
at
org.apache.hadoop.hbase.regionserver.HStore.notifyChangedReadersObservers(HStore.java:797)
at
org.apache.hadoop.hbase.regionserver.HStore.updateReaders(HStore.java:784)
at
org.apache.hadoop.hbase.regionserver.HStore.internalFlushCache(HStore.java:755)
at
org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:682)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1030)
... 3 more
Any ideas about this one?
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