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https://issues.apache.org/jira/browse/YARN-200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13606686#comment-13606686
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Jason Lowe commented on YARN-200:
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The 'nodename_port' string in the usage should be 'nodename:port', otherwise
+1. I'll make the one-character fix when I commit.
> yarn log does not output all needed information, and is in a binary format
> --------------------------------------------------------------------------
>
> Key: YARN-200
> URL: https://issues.apache.org/jira/browse/YARN-200
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 0.23.5
> Reporter: Robert Joseph Evans
> Assignee: Ravi Prakash
> Labels: usability
> Attachments: YARN-200.patch, YARN-200.patch
>
>
> yarn logs does not output attemptid, nodename, or container-id. Missing
> these makes it very difficult to look through the logs for failed containers
> and tie them back to actual tasks and task attempts.
> Also the output currently includes several binary characters. This is OK for
> being machine readable, but difficult for being human readable, or even for
> using standard tool like grep.
> The help message can also be more useful to users
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