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https://issues.apache.org/jira/browse/YARN-7677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16349119#comment-16349119
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Shane Kumpf commented on YARN-7677:
-----------------------------------
I'm not sure if it will be appropriate to address here, but I think we need to
improve how we handle the ordering of the environment variables within the
launch script. Right now it depends on hash map ordering... We likely need to
ensure that any variable values are expanded out or defined prior to use to
avoid this kind of issue.
> Docker image cannot set HADOOP_CONF_DIR
> ---------------------------------------
>
> Key: YARN-7677
> URL: https://issues.apache.org/jira/browse/YARN-7677
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Eric Badger
> Assignee: Jim Brennan
> Priority: Major
> Attachments: YARN-7677.001.patch, YARN-7677.002.patch
>
>
> Currently, {{HADOOP_CONF_DIR}} is being put into the task environment whether
> it's set by the user or not. It completely bypasses the whitelist and so
> there is no way for a task to not have {{HADOOP_CONF_DIR}} set. This causes
> problems in the Docker use case where Docker containers will set up their own
> environment and have their own {{HADOOP_CONF_DIR}} preset in the image
> itself.
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