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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4031) Update findbugsExcludeFile.xml to reflect
Date Wed, 10 Oct 2012 23:23:06 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HDFS-4031:
------------------------------

    Status: Patch Available  (was: Open)
    
> 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
>         Attachments: hdfs-4031.txt
>
>
> 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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