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From "Zian Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8523) Interactive docker shell
Date Fri, 10 Aug 2018 18:31:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16576697#comment-16576697

Zian Chen commented on YARN-8523:

Good point, I think we can make this Jira focus on building this pipline and create a second
Jira for persistent docker exec state while NM restart. Two more questions here,
 # Should we give user sone kind of notification while NM restart and we are trying to resuming
the docker exec? What if we get several retries to reconnect and don't succeed? We may need
to give user some friendly reminder to avoid the misunderstanding of session been stuck for
too long, right?
 # How to handle NM unexpected shutdown(like crash, etc) scenario?

> Interactive docker shell
> ------------------------
>                 Key: YARN-8523
>                 URL: https://issues.apache.org/jira/browse/YARN-8523
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Eric Yang
>            Priority: Major
>              Labels: Docker
> Some application might require interactive unix commands executions to carry out operations.
 Container-executor can interface with docker exec to debug or analyze docker containers while
the application is running.  It would be nice to support an API to invoke docker exec to perform
unix commands and report back the output to application master.  Application master can distribute
and aggregate execution of the commands to record in application master log file.

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