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https://issues.apache.org/jira/browse/FLINK-10135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16643067#comment-16643067
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ASF GitHub Bot commented on FLINK-10135:
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zentol edited a comment on issue #6702: [FLINK-10135] The JobManager does not
report the cluster-level metrics
URL: https://github.com/apache/flink/pull/6702#issuecomment-428133115
This looks a lot better, the majority of my comments are for minor things,
but we've now run into a concurrency issue. All `RpcEndpoints` (i.e.
DIspatcher, ResourceManager, etc) assume to run in a single thread (the
"main-thread"), but metrics are accessed by a separate one. We have to either
make sure that all operations are safe in this scenario, or _somehow_
(@tillrohrmann?) defer the access to the main-thread.
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> The JobManager doesn't report the cluster-level metrics
> -------------------------------------------------------
>
> Key: FLINK-10135
> URL: https://issues.apache.org/jira/browse/FLINK-10135
> Project: Flink
> Issue Type: Bug
> Components: JobManager, Metrics
> Affects Versions: 1.5.0, 1.6.0, 1.7.0
> Reporter: Joey Echeverria
> Assignee: vinoyang
> Priority: Critical
> Labels: pull-request-available
>
> In [the documentation for
> metrics|https://ci.apache.org/projects/flink/flink-docs-release-1.5/monitoring/metrics.html#cluster]
> in the Flink 1.5.0 release, it says that the following metrics are reported
> by the JobManager:
> {noformat}
> numRegisteredTaskManagers
> numRunningJobs
> taskSlotsAvailable
> taskSlotsTotal
> {noformat}
> In the job manager REST endpoint
> ({{http://<job-manager>:8081/jobmanager/metrics}}), those metrics don't
> appear.
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