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https://issues.apache.org/jira/browse/HBASE-3294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965816#action_12965816
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Jonathan Gray commented on HBASE-3294:
--------------------------------------
I've seen this up on my cluster with some regularity.
> WARN org.apache.hadoop.hbase.regionserver.Store: Not in set (double-remove?)
> org.apache.hadoop.hbase.regionserver.storescan...@76607d3d
> ---------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-3294
> URL: https://issues.apache.org/jira/browse/HBASE-3294
> Project: HBase
> Issue Type: Bug
> Reporter: stack
> Fix For: 0.90.0
>
>
> We see this ugly message in running hbase. Its a little disorientating. I
> added stack traces around the call to close. Here are the two I see (The
> WARN message is the bad one... the INFO is the good case). Looks like
> compaction is the one that triggers the WARN.
> {code}
> 2010-12-01 18:20:28,307 WARN org.apache.hadoop.hbase.regionserver.Store: Not
> in set (double-remove?)
> org.apache.hadoop.hbase.regionserver.storescan...@68faedc7
> java.io.IOException: WHY
> at
> org.apache.hadoop.hbase.regionserver.Store.deleteChangedReaderObserver(Store.java:583)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.close(StoreScanner.java:204)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:242)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:326)
> at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:939)
> at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:748)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:753)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:698)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.run(CompactSplitThread.java:81)
> 2010-12-01 18:21:18,103 INFO org.apache.hadoop.hbase.regionserver.Store:
> CLOSE org.apache.hadoop.hbase.regionserver.storescan...@3dca256e
> java.io.IOException: WHY
> at
> org.apache.hadoop.hbase.regionserver.Store.deleteChangedReaderObserver(Store.java:592)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.close(StoreScanner.java:204)
> at
> org.apache.hadoop.hbase.regionserver.KeyValueHeap.close(KeyValueHeap.java:192)
> at
> org.apache.hadoop.hbase.regionserver.HRegion$RegionScanner.close(HRegion.java:2361)
> at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2945)
> at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2844)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:1566)
> at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:570)
> at
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1036)
> {code}
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