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Posted to mapreduce-issues@hadoop.apache.org by "Roman Shaposhnik (JIRA)" <ji...@apache.org> on 2015/05/08 18:43:01 UTC
[jira] [Commented] (MAPREDUCE-5663) Add an interface to Input/Ouput
Formats to obtain delegation tokens
[ https://issues.apache.org/jira/browse/MAPREDUCE-5663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14534851#comment-14534851 ]
Roman Shaposhnik commented on MAPREDUCE-5663:
---------------------------------------------
[~sseth] I'm looking at it as part of bugbash (and also b/c krb is something I'm pretty familiar with). Given the discussion so far, I'm not quite sure where this stands. The last comment from [~tucu00] makes a lot of sense to me, but obviously I'm looking at this for the first time.
> Add an interface to Input/Ouput Formats to obtain delegation tokens
> -------------------------------------------------------------------
>
> Key: MAPREDUCE-5663
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5663
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Siddharth Seth
> Assignee: Michael Weng
> Labels: BB2015-05-TBR
> Attachments: MAPREDUCE-5663.4.txt, MAPREDUCE-5663.5.txt, MAPREDUCE-5663.6.txt, MAPREDUCE-5663.patch.txt, MAPREDUCE-5663.patch.txt2, MAPREDUCE-5663.patch.txt3
>
>
> Currently, delegation tokens are obtained as part of the getSplits / checkOutputSpecs calls to the InputFormat / OutputFormat respectively.
> This works as long as the splits are generated on a node with kerberos credentials. For split generation elsewhere (AM for example), an explicit interface is required.
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