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https://issues.apache.org/jira/browse/YARN-8045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16606410#comment-16606410
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Craig Condit commented on YARN-8045:
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[[email protected]], as a compromise, I think we can maintain compatibility
by adding a bit of logic to the logging – still log message at INFO, but
replace diagnostic content with '...' if DEBUG logging is not enabled. This
shouldn't trip up parsers and would still give administrators the ability to
turn it on if necessary.
> Reduce log output from container status calls
> ---------------------------------------------
>
> Key: YARN-8045
> URL: https://issues.apache.org/jira/browse/YARN-8045
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Shane Kumpf
> Priority: Major
>
> Each time a container's status is returned a log entry is produced in the NM
> from {{ContainerManagerImpl}}. The container status includes the diagnostics
> field for the container. If the diagnostics field contains an exception, it
> can appear as if the exception is logged repeatedly every second. The
> diagnostics message can also span many lines, which puts pressure on the logs
> and makes it harder to read.
> For example:
> {code}
> 2018-03-17 22:01:11,632 INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl:
> Getting container-status for container_e01_1521323860653_0001_01_000005
> 2018-03-17 22:01:11,632 INFO
> org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl:
> Returning ContainerStatus: [ContainerId:
> container_e01_1521323860653_0001_01_000005, ExecutionType: GUARANTEED, State:
> RUNNING, Capability: <memory:1024, vCores:1>, Diagnostics: [2018-03-17
> 22:01:00.675]Exception from container-launch.
> Container id: container_e01_1521323860653_0001_01_000005
> Exit code: -1
> Exception message: <unknown>
> Shell ouput: <unknown>
> [2018-03-17 22:01:00.750]Diagnostic message from attempt :
> [2018-03-17 22:01:00.750]Container exited with a non-zero exit code -1.
> , ExitStatus: -1, IP: null, Host: null, ContainerSubState: SCHEDULED]
> {code}
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