CME during memcache flush forces HRS shutdown
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Key: HBASE-1459
URL: https://issues.apache.org/jira/browse/HBASE-1459
Project: Hadoop HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 0.19.1
Reporter: Rong-En Fan
Fix For: 0.20.0, 0.19.4
I just saw this on my 0.19.1 cluster:
2009-05-30 03:57:19,559 FATAL
org.apache.hadoop.hbase.regionserver.MemcacheFlusher: Replay of hlog required.
Forcing server shutdown
org.apache.hadoop.hbase.DroppedSnapshotException: region:
table,rowkey,1243547152622
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:897)
at org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:790)
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.util.ConcurrentModificationException
at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1100)
at java.util.TreeMap$EntryIterator.next(TreeMap.java:1136)
at java.util.TreeMap$EntryIterator.next(TreeMap.java:1131)
at
org.apache.hadoop.hbase.regionserver.HStore.internalFlushCache(HStore.java:678)
at org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:636)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:882)
... 3 more
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