0.20-append: stallReplicationWork should be volatile
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Key: HDFS-1207
URL: https://issues.apache.org/jira/browse/HDFS-1207
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.20-append
Reporter: Todd Lipcon
Assignee: Todd Lipcon
the stallReplicationWork member in FSNamesystem is accessed by multiple threads
without synchronization, but isn't marked volatile. I believe this is
responsible for about 1% failure rate on
TestFileAppend4.testAppendSyncChecksum* on my 8-core test boxes (looking at
logs I see replication happening even though we've supposedly disabled it)
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