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https://issues.apache.org/jira/browse/YARN-2274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14059292#comment-14059292
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Sandy Ryza commented on YARN-2274:
----------------------------------
{code}
+ if (--updatesToSkipForDebug < 0) {
+ updatesToSkipForDebug = UPDATE_DEBUG_FREQUENCY;
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("Cluster Capacity: " + clusterResource +
+ " Allocations: " + rootMetrics.getAllocatedResources() +
+ " Availability: " + Resource.newInstance(
+ rootMetrics.getAvailableMB(),
+ rootMetrics.getAvailableVirtualCores()) +
+ " Demand: " + rootQueue.getDemand());
+ }
+ }
{code}
Moving the "if (LOG.isDebugEnabled)" to the outside of this chunk would make it
easier for readers who don't care about what's debug logged to realize they can
skip this whole segment. If you're OK with that change, +1 and it can be fixed
on commit?
> FairScheduler: Add debug information about cluster capacity, availability and
> reservations
> ------------------------------------------------------------------------------------------
>
> Key: YARN-2274
> URL: https://issues.apache.org/jira/browse/YARN-2274
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Affects Versions: 2.4.1
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Priority: Trivial
> Attachments: yarn-2274-1.patch, yarn-2274-2.patch
>
>
> FairScheduler logs have little information on cluster capacity and
> availability. Need this information to debug production issues.
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