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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6978) Add JNI support for secure IO operations
Date Sun, 14 Nov 2010 02:08:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931751#action_12931751
] 

Devaraj Das commented on HADOOP-6978:
-------------------------------------

Yeah, our belief is that the shuffle process ends up making a lot of the getpw* calls and
we have already seen a couple of ldap servers outages. We can do a follow up patch though.
If the cluster has a configuration similar to what i mentioned earlier, then yeah, it'd be
really good to have this cache before deployment...

> Add JNI support for secure IO operations
> ----------------------------------------
>
>                 Key: HADOOP-6978
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6978
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io, native, security
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>             Fix For: 0.22.0
>
>         Attachments: hadoop-6978.txt, hadoop-6978.txt
>
>
> In support of MAPREDUCE-2096, we need to add some JNI functionality. In particular, we
need the ability to use fstat() on an open file stream, and to use open() with O_EXCL, O_NOFOLLOW,
and without O_CREAT.

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