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https://issues.apache.org/jira/browse/YARN-814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13696174#comment-13696174
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Hitesh Shah commented on YARN-814:
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A quick minor comment ( for now ):
LOG.error("Exit code from task is : " + exitCode);
- this log message is not useful as it does not which container this exit
code maps to nor does it print out the actual error message from the exited
task.
> Difficult to diagnose a failed container launch when error due to invalid
> environment variable
> ----------------------------------------------------------------------------------------------
>
> Key: YARN-814
> URL: https://issues.apache.org/jira/browse/YARN-814
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Hitesh Shah
> Assignee: Jian He
> Attachments: YARN-814.1.patch, YARN-814.2.patch, YARN-814.patch
>
>
> The container's launch script sets up environment variables, symlinks etc.
> If there is any failure when setting up the basic context ( before the actual
> user's process is launched ), nothing is captured by the NM. This makes it
> impossible to diagnose the reason for the failure.
> To reproduce, set an env var where the value contains characters that throw
> syntax errors in bash.
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