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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4640) JniBasedUnixGroupsMapping: fix some crash bugs
Date Tue, 26 Mar 2013 22:59:15 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-4640:
---------------------------------------

    Status: Patch Available  (was: Open)
    
> JniBasedUnixGroupsMapping: fix some crash bugs
> ----------------------------------------------
>
>                 Key: HDFS-4640
>                 URL: https://issues.apache.org/jira/browse/HDFS-4640
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.0.5-beta
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>         Attachments: HDFS-4640.001.patch
>
>
> JniBasedUnixGroupsMapping has some issues.
> * sometimes on error paths variables are freed prior to being initialized
> * re-allocate buffers less frequently (can reuse the same buffer for multiple calls to
getgrnam)
> * allow non-reentrant functions to be used, to work around client bugs
> * don't throw IOException from JNI functions if the JNI functions do not declare this
checked exception.
> * don't bail out if only one group name among all the ones associated with a user can't
be looked up.

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