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From "Ravi Gummadi (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-7900) LocalDirAllocator confChanged() accesses conf.get() twice
Date Fri, 09 Dec 2011 17:15:40 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7900?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ravi Gummadi updated HADOOP-7900:
---------------------------------

    Attachment: HADOOP-7900.patch

Attaching patch with trivial fix.
                
> 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: 0.23.1
>
>         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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