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https://issues.apache.org/jira/browse/YARN-5219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15333373#comment-15333373
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Sunil G commented on YARN-5219:
-------------------------------
There are some bugs in the previous patch which I uploaded. Basically I wanted
to validate cases for substitution. But this patch will also handle cases like
direct assignment. Empty assignment is actually valid. I will work on some more
modifications to handle these corner cases, so cancelling the patch for now.
> 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: Bug
> Reporter: Hitesh Shah
> Assignee: Sunil G
> Attachments: YARN-5219.001.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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