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https://issues.apache.org/jira/browse/YARN-10450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17205025#comment-17205025
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Jim Brennan commented on YARN-10450:
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Checkstyle issue:
{noformat}
./hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ClusterMetrics.java:54:
@Metric("Memory Utilization") MutableGaugeLong utilizedMB;:50: Variable
'utilizedMB' must be private and have accessor methods. [VisibilityModifier]
./hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ClusterMetrics.java:55:
@Metric("Vcore Utilization") MutableGaugeLong utilizedVirtualCores;:49:
Variable 'utilizedVirtualCores' must be private and have accessor methods.
[VisibilityModifier]
{noformat}
The new metrics are set up just like existing ones in this file, so I am not
going to try to fix this.
I think the unit test failures are unrelated to this change. They are passing
for me locally.
> Add cpu and memory utilization per node and cluster-wide metrics
> ----------------------------------------------------------------
>
> Key: YARN-10450
> URL: https://issues.apache.org/jira/browse/YARN-10450
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn
> Affects Versions: 3.3.1
> Reporter: Jim Brennan
> Assignee: Jim Brennan
> Priority: Minor
> Attachments: NodesPage.png, YARN-10450.001.patch, YARN-10450.002.patch
>
>
> Add metrics to show actual cpu and memory utilization for each node and
> aggregated for the entire cluster. This is information is already passed
> from NM to RM in the node status update.
> We have been running with this internally for quite a while and found it
> useful to be able to quickly see the actual cpu/memory utilization on the
> node/cluster. It's especially useful if some form of overcommit is used.
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