NPE from CompactionChecker
--------------------------
Key: HBASE-3524
URL: https://issues.apache.org/jira/browse/HBASE-3524
Project: HBase
Issue Type: Bug
Reporter: James Kennedy
Fix For: 0.90.2
I recently updated production data to use HBase 0.90.0.
Now I'm periodically seeing:
[10/02/11 17:23:27] 30076066 [mpactionChecker] ERROR
nServer$MajorCompactionChecker - Caught exception
java.lang.NullPointerException
at
org.apache.hadoop.hbase.regionserver.Store.isMajorCompaction(Store.java:832)
at
org.apache.hadoop.hbase.regionserver.Store.isMajorCompaction(Store.java:810)
at
org.apache.hadoop.hbase.regionserver.HRegion.isMajorCompaction(HRegion.java:2800)
at
org.apache.hadoop.hbase.regionserver.HRegionServer$MajorCompactionChecker.chore(HRegionServer.java:1047)
at org.apache.hadoop.hbase.Chore.run(Chore.java:66)
The only negative effect is that this is interrupting compactions from
happening. But that is pretty serious and this might be a sign of data
corruption?
Maybe it's just my data, but this task should at least involve improving the
handling to catch the NPE and still iterate through the other onlineRegions
that might compact without error. The MajorCompactionChecker.chore() method
only catches IOExceptions and so this NPE breaks out of that loop.
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