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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8523) Interactive docker shell
Date Fri, 10 Aug 2018 20:22:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16576801#comment-16576801

Eric Yang commented on YARN-8523:

[~Zian Chen] # Without step 2 session management, the terminal session will terminate with
Connection Closed when node manager restarts.  User can retry with browser reload to obtain
a new session.  I think web socket connection is reliable enough to keep the connection alive.
 If it drops, user can always get a new session of docker exec.

# There is nothing to handle on node manager shutdown or crash because remote connection closed
will be displayed to browser.

> 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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