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https://issues.apache.org/jira/browse/YARN-4710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lin Yiqun updated YARN-4710:
----------------------------
Attachment: yarn-debug.log
> Reduce logging application reserved debug info in FSAppAttempt#assignContainer
> ------------------------------------------------------------------------------
>
> Key: YARN-4710
> URL: https://issues.apache.org/jira/browse/YARN-4710
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Affects Versions: 2.7.1
> Reporter: Lin Yiqun
> Assignee: Lin Yiqun
> Priority: Minor
> Attachments: yarn-debug.log
>
>
> I found lots of unimportant records info in assigning container when I
> prepared to debug the problem of container assigning.There are too many
> records like this in yarn-resourcemanager.log, and it's difficiult for me to
> directly to found the important info.
> {code}
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:52,971 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:52,976 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:52,981 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:52,986 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:52,991 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:52,996 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,001 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,007 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,012 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,017 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,022 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,027 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,032 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,038 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,050 DEBUG
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSAppAttempt:
> Node offered to app: application_1449458968698_0011 reserved: false
> 2016-02-21 16:31:53,057 DEBUG
> {code}
> The reason why of so many records is that it always print this info first in
> container assigning whether the assigned result is successful or failed.
> Can see the complete yarn log in updated log, and you can see how many
> records there are.
> And in addition, too many these info logging will slow down process of
> container assigning.Maybe we should change this logLevel to other level, like
> {{trace}}.
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