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From "Venkat Ranganathan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5217) DistCp fails when launched by Oozie in a secure cluster
Date Wed, 08 May 2013 20:31:16 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652317#comment-13652317
] 

Venkat Ranganathan commented on MAPREDUCE-5217:
-----------------------------------------------

This fix has been manually test with a secure cluster with branch-1
                
> DistCp fails when launched by Oozie in a secure cluster
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-5217
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5217
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: distcp, security
>    Affects Versions: trunk, 1.1.2, 2.0.4-alpha
>         Environment: Hadoop secure cluster
>            Reporter: Venkat Ranganathan
>            Assignee: Venkat Ranganathan
>         Attachments: MAPREDUCE-5217-branch-1.patch, MAPREDUCE-5217-trunk.patch, MAPREDUCE-5217-trunk.patch,
MAPREDUCE-5217-trunk.patch.2
>
>
> As mentioned in MAPREDUCE-4324, Oozie has the following boilerplate code in
> in the main launcher for Pig, Hive, MR and Sqoop actions.
> if (System.getenv("HADOOP_TOKEN_FILE_LOCATION") != null) {
>             jobConf.set("mapreduce.job.credentials.binary", System.getenv("HADOOP_TOKEN_FILE_LOCATION"));
> }
> For Java action, which does not have a main launcher in oozie, the above codecan be added
by the user as the user purportedly has the code that is launched.
> But for DistCp action, the user has no such luxury.  The solution attempted in
> MAPREDUCE-4324 would have helped DistCp, but it was not implemented as it would break
MAPREDUCE-3727.  So, we have to fix DistCp and
> add the same boilerplate code so that DistCp action can be launched by Oozie
> in a secure cluster.
> The code added checks for an System env. variable to be set which is not
> typically set in normal command line execution of DistCp,  DistCp runs fine
> with commnad  line usage both in secure and non-secure cluster.

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