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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1207) 0.20-append: stallReplicationWork should be volatile
Date Wed, 16 Jun 2010 01:02:23 GMT
0.20-append: stallReplicationWork should be volatile
----------------------------------------------------

                 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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