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https://issues.apache.org/jira/browse/YARN-7226?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated YARN-7226:
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Attachment: YARN-7226.001.patch
Attaching a patch that takes the approach described above.
ContainerLaunch#sanitizeEnv is already performing the above two steps, so all
we need to do is remove the whitelist variable codepaths from
ContainerExecutor#writeLaunchEnv so these variables can come through like
normal variables when they are set by the container.
> Whitelisted variables do not support delayed variable expansion
> ---------------------------------------------------------------
>
> Key: YARN-7226
> URL: https://issues.apache.org/jira/browse/YARN-7226
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.9.0, 2.8.1, 3.0.0-alpha4
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Attachments: YARN-7226.001.patch
>
>
> The nodemanager supports a configurable list of environment variables, via
> yarn.nodemanager.env-whitelist, that will be propagated to the container's
> environment unless those variables were specified in the container launch
> context. Unfortunately the handling of these whitelisted variables prevents
> using delayed variable expansion. For example, if a user shipped their own
> version of hadoop with their job via the distributed cache and specified:
> {noformat}
> HADOOP_COMMON_HOME={{PWD}}/my-private-hadoop/
> {noformat}
> as part of their job, the variable will be set as the *literal* string:
> {noformat}
> $PWD/my-private-hadoop/
> {noformat}
> rather than having $PWD expand to the container's current directory as it
> does for any other, non-whitelisted variable being set to the same value.
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