CME in HStore.notifyChangedReadersObservers
-------------------------------------------
Key: HBASE-1076
URL: https://issues.apache.org/jira/browse/HBASE-1076
Project: Hadoop HBase
Issue Type: Bug
Reporter: Andrew Purtell
Running latest trunk plus jimk's patch for HBASE-543:
2008-12-21 12:47:31,741 DEBUG org.apache.hadoop.hbase.regionserver.HStoreScanner
: Added a StoreFileScanner to outstanding HStoreScanner
2008-12-21 12:47:31,741 FATAL
org.apache.hadoop.hbase.regionserver.MemcacheFlusher: Replay of hlog required.
Forcing server shutdown
org.apache.hadoop.hbase.DroppedSnapshotException: region:
urls,http|playvideogame.net|,1229725620550
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:228)
at
org.apache.hadoop.hbase.regionserver.MemcacheFlusher.flushSomeRegions(MemcacheFlusher.java:292)
at
org.apache.hadoop.hbase.regionserver.MemcacheFlusher.reclaimMemcacheMemory(MemcacheFlusher.java:262)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.batchUpdates(HRegionServer.java:1594)
at sun.reflect.GeneratedMethodAccessor12.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)
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
at java.util.HashMap$KeyIterator.next(HashMap.java:828)
at
org.apache.hadoop.hbase.regionserver.HStore.notifyChangedReadersObservers(HStore.java:736)
at
org.apache.hadoop.hbase.regionserver.HStore.updateReaders(HStore.java:724)
at
org.apache.hadoop.hbase.regionserver.HStore.internalFlushCache(HStore.java:693)
at
org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:629)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:865)
... 10 more
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