[jira] [Updated] (MAPREDUCE-5517) enabling uber mode with 0 reducer still requires mapreduce.reduce.memory.mb to be less than yarn.app.mapreduce.am.resource.mb

["Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod Kumar Vavilapalli updated MAPREDUCE-5517:
-----------------------------------------------

    Status: Open  (was: Patch Available)

Few more nits:
 - Fix lines longer than 80 chars
 - Make the same changes w.r.t cpu configuration too?
 - The conditional code has become a bit complex. Rewrite using simple if..else statements? Also create local variables for values of MAP_MEMORY_MB etc instead of repeated config lookups?

> enabling uber mode with 0 reducer still requires mapreduce.reduce.memory.mb to be less than yarn.app.mapreduce.am.resource.mb
> -----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5517
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5517
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.0.5-alpha
>            Reporter: Siqi Li
>            Assignee: Siqi Li
>            Priority: Minor
>         Attachments: MAPREDUCE_5517_v3.patch.txt, MAPREDUCE_5517_v4.patch.txt
>
>
> Since there is no reducer, the memory allocated to reducer is irrelevant to enable uber mode of a job



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