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https://issues.apache.org/jira/browse/YARN-221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14601616#comment-14601616
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Xuan Gong commented on YARN-221:
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bq. Here is the scenario. a) no applications want to over the default. b)
Administrators of the cluster want to make a cluster-side global change from
sample rate of 20 percent to 50 percent.
OK. This makes sense. Thanks for explanation.
> NM should provide a way for AM to tell it not to aggregate logs.
> ----------------------------------------------------------------
>
> Key: YARN-221
> URL: https://issues.apache.org/jira/browse/YARN-221
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: log-aggregation, nodemanager
> Reporter: Robert Joseph Evans
> Assignee: Ming Ma
> Attachments: YARN-221-trunk-v1.patch, YARN-221-trunk-v2.patch,
> YARN-221-trunk-v3.patch, YARN-221-trunk-v4.patch, YARN-221-trunk-v5.patch
>
>
> The NodeManager should provide a way for an AM to tell it that either the
> logs should not be aggregated, that they should be aggregated with a high
> priority, or that they should be aggregated but with a lower priority. The
> AM should be able to do this in the ContainerLaunch context to provide a
> default value, but should also be able to update the value when the container
> is released.
> This would allow for the NM to not aggregate logs in some cases, and avoid
> connection to the NN at all.
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