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Posted to yarn-issues@hadoop.apache.org by "Xiaoshuang LU (JIRA)" <ji...@apache.org> on 2016/03/10 08:33:40 UTC
[jira] [Updated] (YARN-1100) Giving multiple commands to
ContainerLaunchContext doesn't work as expected
[ https://issues.apache.org/jira/browse/YARN-1100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiaoshuang LU updated YARN-1100:
--------------------------------
Attachment: YARN-1100.patch
> Giving multiple commands to ContainerLaunchContext doesn't work as expected
> ---------------------------------------------------------------------------
>
> Key: YARN-1100
> URL: https://issues.apache.org/jira/browse/YARN-1100
> Project: Hadoop YARN
> Issue Type: Bug
> Components: api, nodemanager
> Affects Versions: 2.1.0-beta, 2.7.2
> Reporter: Sandy Ryza
> Attachments: YARN-1100.patch
>
>
> A ContainerLaunchContext accepts a list of commands (as strings) to be executed to launch the container. I would expect that giving a list with the two commands "echo yolo" and "date" would print something like
> {code}
> yolo
> Mon Aug 26 14:40:23 PDT 2013
> {code}
> Instead it prints
> {code}
> yolo date
> {code}
> This is because the commands get executed with:
> {code}
> exec /bin/bash -c "echo yolo date"
> {code}
> To get the expected behavior I have to include semicolons at the end of each command. At the very least, this should be documented, but I think better would be for the NM to insert the semicolons.
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