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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4031) Update findbugsExcludeFile.xml to reflect
Date Wed, 10 Oct 2012 23:13:02 GMT
Eli Collins created HDFS-4031:

             Summary: Update findbugsExcludeFile.xml to reflect 
                 Key: HDFS-4031
                 URL: https://issues.apache.org/jira/browse/HDFS-4031
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: name-node
    Affects Versions: 2.0.0-alpha
            Reporter: Eli Collins
            Assignee: Eli Collins

Findbugs 2 warns about some volatile increments (VO_VOLATILE_INCREMENT) that unlike HDFS-4029
and HDFS-4030 are less problematic:
- numFailedVolumes is only incremented in one thread and that access is synchronized
- pendingReceivedRequests in BPServiceActor is clearly synchronized
It would be reasonable to make these Atomics as well but I think they're uses are clearly
correct so figured for these the warning was more obviously bogus and so could be ignored.

There's also a SE_BAD_FIELD_INNER_CLASS warning (LocalDatanodeInfo's anonymous class is serializable
but it is not) in BPServiceActor is OK to ignore since we don't serialize LocalDatanodeInfo.

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