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Andrew Purtell resolved HBASE-5532. ----------------------------------- Resolution: Won't Fix Thanks for looking at this [~clehene]. As this was reported against 0.90 and we don't support that version now I'm closing as Wont Fix > get NPE during MajorCompactionChecker > -------------------------------------- > > Key: HBASE-5532 > URL: https://issues.apache.org/jira/browse/HBASE-5532 > Project: HBase > Issue Type: Bug > Components: regionserver > Reporter: terry zhang > Labels: delete > Attachments: HBASE-5532-v2.patch, HBASE-5532.patch > > > We found error log (NullPointerException) below on our online cluster: > 2012-03-05 00:17:09,592 ERROR > org.apache.hadoop.hbase.regionserver.HRegionServer$MajorCompactionChecker: > Caught exception > java.lang.NullPointerException > at > org.apache.hadoop.hbase.regionserver.Store.isMajorCompaction(Store.java:878) > at > org.apache.hadoop.hbase.regionserver.Store.isMajorCompaction(Store.java:857) > at > org.apache.hadoop.hbase.regionserver.HRegion.isMajorCompaction(HRegion.java:3017) > at > org.apache.hadoop.hbase.regionserver.HRegionServer$MajorCompactionChecker.chore(HRegionServer.java:1172) > at org.apache.hadoop.hbase.Chore.run(Chore.java:66) > After Check the code we found although it already check whether store files > has null reader at the begin of the function(isMajorCompaction), but it still > has some possibility the reader is closed before it return(eg mini > compaction). So we need to check store file reader before we use it to avoid > this NPE -- This message was sent by Atlassian JIRA (v6.3.4#6332)