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https://issues.apache.org/jira/browse/TEZ-2744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14732239#comment-14732239
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Jeff Zhang edited comment on TEZ-2744 at 9/6/15 7:08 AM:
---------------------------------------------------------

* History event occupy a large proportion of the log. Any consideration to move 
it into separated files ? IMO, the history events is more likely for offline 
analytics rather than for human diagnostics. 
* Should suppress yarn related log (configure them as debug in log4j.properties 
) ? like the following
{noformat}
[INFO] [AMRM Heartbeater thread]|| impl.AMRMClientImpl Received new token for : 
cn044-10.l42scl.hortonworks.com:49522
:2015-09-06 06:38:03,874 [INFO] [ContainerLauncher #15]|| 
impl.ContainerManagementProtocolProxy Opening proxy : 
cn048-10.l42scl.hortonworks.com:35632
:2015-09-06 06:38:03,874 [INFO] [ContainerLauncher #10]|| 
impl.ContainerManagementProtocolProxy Opening proxy : 
cn048-10.l42scl.hortonworks.com:35632
:2015-09-06 06:38:37,965 [INFO] [AMRM Callback Handler Thread]|| 
util.RackResolver Resolved cn054-10.l42scl.hortonworks.com to /default-rack
:2015-09-06 06:38:37,965 [INFO] [AMRM Callback Handler Thread]|| 
util.RackResolver Resolved cn050-10.l42scl.hortonworks.com to /default-rack
{noformat}


was (Author: zjffdu):
* History event occupy a large proportion of the log. Any consideration to move 
it into separated files ? IMO, the history events is more likely for offline 
analytics rather than for human diagnostics. 
* Should suppress yarn related log (configure them as debug in log4j.properties 
) ? like the following
{noformat}
[INFO] [AMRM Heartbeater thread]|| impl.AMRMClientImpl Received new token for : 
cn044-10.l42scl.hortonworks.com:49522
:2015-09-06 06:38:03,874 [INFO] [ContainerLauncher #15]|| 
impl.ContainerManagementProtocolProxy Opening proxy : 
cn048-10.l42scl.hortonworks.com:35632
:2015-09-06 06:38:03,874 [INFO] [ContainerLauncher #10]|| 
impl.ContainerManagementProtocolProxy Opening proxy : 
cn048-10.l42scl.hortonworks.com:35632
{noformat}

> Logging cleanup and enhancements
> --------------------------------
>
>                 Key: TEZ-2744
>                 URL: https://issues.apache.org/jira/browse/TEZ-2744
>             Project: Apache Tez
>          Issue Type: Improvement
>    Affects Versions: 0.5.0
>            Reporter: Siddharth Seth
>
> There's far too much logging, some of which is redundant information - which 
> leads to large log files for jobs.
> Also, some logging can be enhanced to include additional context.



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