[hbase] NPE in DFSClient in hbase under load
--------------------------------------------
Key: HADOOP-2756
URL: https://issues.apache.org/jira/browse/HADOOP-2756
Project: Hadoop Core
Issue Type: Bug
Components: contrib/hbase
Reporter: stack
Priority: Minor
Saw this in logs:
{code}
2008-01-31 18:55:02,128 ERROR org.apache.hadoop.hbase.HRegionServer: Compaction
failed for region TestTable,0009438931,1201805282651
java.lang.NullPointerException
at
org.apache.hadoop.dfs.DFSClient$DFSOutputStream.close(DFSClient.java:2262)
at
org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:51)
at
org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:67)
at org.apache.hadoop.hbase.HStoreFile.writeInfo(HStoreFile.java:365)
at org.apache.hadoop.hbase.HStore.compact(HStore.java:1236)
at org.apache.hadoop.hbase.HRegion.compactStores(HRegion.java:775)
at org.apache.hadoop.hbase.HRegion.compactIfNeeded(HRegion.java:707)
at
org.apache.hadoop.hbase.HRegionServer$CompactSplitThread.run(HRegionServer.java:253)
{code}
Look to see if the response data method needs to be made volatile (There's a
test for null just before we use it on line #2262).
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