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https://issues.apache.org/jira/browse/MAPREDUCE-2035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12903488#action_12903488
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Todd Lipcon commented on MAPREDUCE-2035:
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Is -Wall really compiler-specific? Do you have some autoconf foo to share to 
make this more portable?

Also, given that this is the *linux* task-controller, don't you think it's fair 
to assume GCC for now, until someone takes up the task of making it run on 
other systems?

> Enable -Wall and fix warnings in task-controller build
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-2035
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2035
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: task-controller
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>         Attachments: mapreduce-2035-toreview.txt, mapreduce-2035.txt
>
>
> Enabling -Wall shows a bunch of warnings. We should enable them and then fix 
> them.

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