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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4014) Fix warnings found by findbugs2
Date Wed, 17 Oct 2012 23:12:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13478483#comment-13478483

Tsz Wo (Nicholas), SZE commented on HDFS-4014:

This findbugs 2 warnings for GenerationStamp, excessBlocksCount and postponedMisreplicatedBlocksCount
are false positives.  GenerationStamp and many other namenode/blockmanagement classes such
as INode, Block, Lease, etc. are synchronized by the namesystem lock.  If we synchronize all
these classes individually, it definitely hurts performance.
> Fix warnings found by findbugs2 
> --------------------------------
>                 Key: HDFS-4014
>                 URL: https://issues.apache.org/jira/browse/HDFS-4014
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.0.0-alpha
>            Reporter: Eli Collins
>            Assignee: Eli Collins
> The HDFS side of HADOOP-8594. Ubrella jira for fixing the warnings found by findbugs

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