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Date: Mon, 28 Aug 2017 18:35:00 +0000 (UTC)
From: "Wangda Tan (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12977033.1465423900000.139295.1503945300564@Atlassian.JIRA>
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Subject: [jira] [Commented] (YARN-5219) When an export var command fails in
 launch_container.sh, the full container launch should fail
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archived-at: Mon, 28 Aug 2017 18:35:07 -0000


    [ https://issues.apache.org/jira/browse/YARN-5219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16144171#comment-16144171 ] 

Wangda Tan commented on YARN-5219:
----------------------------------

Latest patch LGTM, will commit tomorrow if no opposite opinions. 

> When an export var command fails in launch_container.sh, the full container launch should fail
> ----------------------------------------------------------------------------------------------
>
>                 Key: YARN-5219
>                 URL: https://issues.apache.org/jira/browse/YARN-5219
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Hitesh Shah
>            Assignee: Sunil G
>         Attachments: YARN-5219.001.patch, YARN-5219.003.patch, YARN-5219.004.patch, YARN-5219.005.patch, YARN-5219.006.patch, YARN-5219.007.patch, YARN-5219-branch-2.001.patch
>
>
> Today, a container fails if certain files fail to localize. However, if certain env vars fail to get setup properly either due to bugs in the yarn application or misconfiguration, the actual process launch still gets triggered. This results in either confusing error messages if the process fails to launch or worse yet the process launches but then starts behaving wrongly if the env var is used to control some behavioral aspects. 
> In this scenario, the issue was reproduced by trying to do export abc="$\{foo.bar}" which is invalid as var names cannot contain "." in bash. 


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