[jira] [Assigned] (HADOOP-9818) Remove usage of "bash -c" from oah.fs.DF

["Andrew Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-9818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Wang reassigned HADOOP-9818:
-----------------------------------

    Assignee: Kousuke Saruta

Hi Kousuke, thanks for the patch!

I've made you a contributor, so now you should be able to assign Common JIRAs to yourself and mark them as Patch Available via the "Submit Patch" button.

Part of the trickiness from removing "2>&1" is error handling. I haven't looked into DF at all, but {{ProcessBuilder}} separates stdout and stderr, so stderr messages no longer show up. So, I added another param to {{Shell}} in HADOOP-9652 (hopefully committed soon) which merges them back together.

It'd be great if you can review the {{DF}} error handling behavior, especially adding tests for any missing holes you find.
                
> Remove usage of "bash -c" from oah.fs.DF
> ----------------------------------------
>
>                 Key: HADOOP-9818
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9818
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 3.0.0, 2.1.0-beta
>            Reporter: Andrew Wang
>            Assignee: Kousuke Saruta
>              Labels: newbie
>         Attachments: HADOOP-9818.patch
>
>
> {{DF}} uses "bash -c" to shell out to the unix {{df}} command. This is potentially unsafe; let's think about removing it.

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