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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4309) Add debug information to application logs when a container fails
Date Wed, 09 Dec 2015 19:31:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-4309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15049241#comment-15049241
] 

Wangda Tan commented on YARN-4309:
----------------------------------

Thanks reviews from [~ivanmi],

I've tried to deploy Hadoop locally with this patch, it works. The only comment from my side
is:

Do you think is it better to rename {{yarn.nodemanager.log-container-debug-info}} to {{yarn.nodemanager.log-container-debug-info.enabled}}.
Since {{yarn.nodemanager.log-container-debug-info}} doesn't show it's a boolean.



> Add debug information to application logs when a container fails
> ----------------------------------------------------------------
>
>                 Key: YARN-4309
>                 URL: https://issues.apache.org/jira/browse/YARN-4309
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Varun Vasudev
>            Assignee: Varun Vasudev
>         Attachments: YARN-4309.001.patch, YARN-4309.002.patch, YARN-4309.003.patch, YARN-4309.004.patch,
YARN-4309.005.patch, YARN-4309.006.patch, YARN-4309.007.patch, YARN-4309.008.patch, YARN-4309.009.patch
>
>
> Sometimes when a container fails, it can be pretty hard to figure out why it failed.
> My proposal is that if a container fails, we collect information about the container
local dir and dump it into the container log dir. Ideally, I'd like to tar up the directory
entirely, but I'm not sure of the security and space implications of such a approach. At the
very least, we can list all the files in the container local dir, and dump the contents of
launch_container.sh(into the container log dir).
> When log aggregation occurs, all this information will automatically get collected and
make debugging such failures much easier.



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