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Posted to common-issues@hadoop.apache.org by "Hudson (Commented) (JIRA)" <ji...@apache.org> on 2012/03/11 20:36:39 UTC

[jira] [Commented] (HADOOP-7900) LocalDirAllocator confChanged() accesses conf.get() twice

    [ https://issues.apache.org/jira/browse/HADOOP-7900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13227218#comment-13227218 ] 

Hudson commented on HADOOP-7900:
--------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #1940 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1940/])
    HADOOP-7900. LocalDirAllocator confChanged() accesses conf.get() twice. Contributed by Ravi Gummadi. (Revision 1299434)

     Result = SUCCESS
umamahesh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1299434
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/LocalDirAllocator.java

                
> LocalDirAllocator confChanged() accesses conf.get() twice
> ---------------------------------------------------------
>
>                 Key: HADOOP-7900
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7900
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.24.0, 0.23.1
>            Reporter: Ravi Gummadi
>            Assignee: Ravi Gummadi
>             Fix For: 0.23.3
>
>         Attachments: HADOOP-7900.patch
>
>
> LocalDirAllocator.AllocatorPerContext.confChanged() accesses conf.get() twice unnecessarily. The 2 calls can give 2 different values, which can lead to issues because the first call's return value is saved in savedLocalDirs and is used for comparison in the next call to confChanged() method --- So the comparison is wrong.

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