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https://issues.apache.org/jira/browse/YARN-6726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16100748#comment-16100748
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Wangda Tan commented on YARN-6726:
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Thanks for explanations [[email protected]], I still not fully
understanding #2.
I can understand the part why command goes to STDOUT, but I'm not sure why
removing fflush can avoid this happen. Before the patch, output of
container-executor (in time order).
a. Using command: <command> .... (fflush)
b. Output of {{docker inspect}}
Even if we remove fflush from (a), I'm not sure how we can avoid it occurs in
the output since it happens before (b).
Also, I'm wondering if this is a correct solution, because this assumes inside
c-e, there's no message should be allowed to happen before the actual docker
command execution. Ideally we should either redirect docker command output to a
separate file or could possibly use named pipe.
> Fix issues with docker commands executed by container-executor
> --------------------------------------------------------------
>
> Key: YARN-6726
> URL: https://issues.apache.org/jira/browse/YARN-6726
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Reporter: Shane Kumpf
> Assignee: Shane Kumpf
> Attachments: YARN-6726.001.patch
>
>
> docker inspect, rm, stop, etc are issued through container-executor. Commands
> other than docker run are not functioning properly.
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