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https://issues.apache.org/jira/browse/YARN-9370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16794040#comment-16794040
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Szilard Nemeth commented on YARN-9370:
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Hi [~yeshavora]!
I agree with Eric on using slf4j format strings in order to have improved
performance. Using StringBuilders can be costly.
> Better logging in recoverAssignedGpus in class GpuResourceAllocator
> -------------------------------------------------------------------
>
> Key: YARN-9370
> URL: https://issues.apache.org/jira/browse/YARN-9370
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Szilard Nemeth
> Assignee: Yesha Vora
> Priority: Trivial
> Labels: newbie, newbie++
> Attachments: YARN-9370.001.patch, YARN-9370.002.patch,
> YARN-9370.003.patch
>
>
> The last line of
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.gpu.GpuResourceAllocator#recoverAssignedGpus
> is this:
> {code:java}
> usedDevices.put(gpuDevice, containerId);
> {code}
> We should have an info (or if not info, at least a debug) level log to
> indicate that a container is allocated to a GPU device during recovery.
> Please also check recovery related code, maybe there can be some room for
> improvement around logging.
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