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