[jira] [Updated] (YARN-9391) Disable PATH variable to be passed to Docker container

["Jim Brennan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-9391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Brennan updated YARN-9391:
------------------------------
    Attachment: YARN-9391.001.patch

> Disable PATH variable to be passed to Docker container
> ------------------------------------------------------
>
>                 Key: YARN-9391
>                 URL: https://issues.apache.org/jira/browse/YARN-9391
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Eric Yang
>            Assignee: Jim Brennan
>            Priority: Major
>         Attachments: YARN-9391.001.patch
>
>
> This is observed from using Apache NiFi docker image.  It makes assumption that PATH variable contains /bin to reference to system utility.  Where host YARN environment PATH variable is default to leaked into container by accident and not containing /bin path (default configuration).  In general, it seems like node manager should block PATH variable from leaking into container.  Not sure if there is a valid use case that host PATH variable must leak into container from docker point of view.  From Hadoop point of view, if container is merely a chroot, and container is a mirror image of host worker dir.  It is good to keep host PATH variable the same.
> Maybe we want to be more specific that block PATH variable to leak into Docker container, if it is using ENTRYPOINT only?



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