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https://issues.apache.org/jira/browse/TEZ-2282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14497377#comment-14497377
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Mit Desai commented on TEZ-2282:
--------------------------------

bq. it seems like we should probably add a timestamp to the log message
I thought having a start point to differentiate was the purpose. But I can 
definitely work on getting the timestamp.

I will also do the same when the task completes and in the DAG App Master 
start/stop logic.

> Delimit reused yarn container logs (stderr, stdout, syslog) with task attempt 
> start/stop events
> -----------------------------------------------------------------------------------------------
>
>                 Key: TEZ-2282
>                 URL: https://issues.apache.org/jira/browse/TEZ-2282
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jonathan Eagles
>            Assignee: Mit Desai
>         Attachments: TEZ-2282.1.patch, TEZ-2282.2.patch, 
> TEZ-2282.master.1.patch
>
>
> This could help with debugging in some cases where logging is task specific. 
> For example GC log is going to stdout, it will be nice to see task attempt 
> start/stop times



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