hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Omkar Vinit Joshi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4493) Distibuted Cache Compatability Issues
Date Fri, 12 Jul 2013 23:19:49 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13707529#comment-13707529
] 

Omkar Vinit Joshi commented on MAPREDUCE-4493:
----------------------------------------------

[~revans2] if we are deprecating getLocalCacheFiles and getCacheFiles in jobContext() then
how the user is going to get local cached files in map task?  YARN-916 is the related issue..
Thanks.
                
> Distibuted Cache Compatability Issues
> -------------------------------------
>
>                 Key: MAPREDUCE-4493
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4493
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.3, 2.0.0-alpha, 3.0.0
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Critical
>             Fix For: 0.23.3, 2.0.2-alpha
>
>         Attachments: MR-4493.txt, MR-4493.txt, MR-4493.txt
>
>
> The distributed cache does not work like it does in 1.0.
> mapreduce.job.cache.symlink.create is completely ignored and symlinks are always created
no matter what.  Files and archives without a fragment will also have symlinks created.
> If two cache archives or cache files happen to have the same name, or same symlink fragment
only the last one in the list is localized.
> The localCacheArchives and LocalCacheFiles are not set correctly when these duplicates
happen causing off by one or more errors for anyone trying to use them.
> The reality is that use of symlinking is so common currently that these incompatibilities
are not that likely to show up, but we still need to fix them.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message