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[FLINK-14299] Introduce ProcessMetricGroup #9825

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tillrohrmann
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What is the purpose of the change

The ProcessMetricGroup encapsulates the Status and system metrics of the ClusterEntrypoint.
These have been factored out of the JobManagerMetricGroup. In order to maintain backwards
compatibility, the same scope as the JobManagerMetricGroup is being used.

cc @zentol

Verifying this change

  • Verified manually with the JMX reporter that it works

Does this pull request potentially affect one of the following parts:

  • Dependencies (does it add or upgrade a dependency): (no)
  • The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
  • The serializers: (no)
  • The runtime per-record code paths (performance sensitive): (no)
  • Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
  • The S3 file system connector: (no)

Documentation

  • Does this pull request introduce a new feature? (no)
  • If yes, how is the feature documented? (not applicable)

The ProcessMetricGroup encapsulates the Status and system metrics of the ClusterEntrypoint.
These have been factored out of the JobManagerMetricGroup. In order to maintain backwards
compatibility, the same scope as the JobManagerMetricGroup is being used.
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flinkbot commented Oct 1, 2019

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flinkbot commented Oct 1, 2019

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@Jiayi-Liao Jiayi-Liao left a comment

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lgtm.

private static MetricGroup createAndInitializeStatusMetricGroup(AbstractMetricGroup<?> parentMetricGroup) {
MetricGroup statusGroup = parentMetricGroup.addGroup(METRIC_GROUP_STATUS_NAME);

// Initialize the TM metrics
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this comment isn't accurate anymore; let's just remove it

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true, I will remove it.

@@ -62,7 +64,7 @@
*/
public class MetricUtils {
private static final Logger LOG = LoggerFactory.getLogger(MetricUtils.class);
private static final String METRIC_GROUP_STATUS_NAME = "Status";
public static final String METRIC_GROUP_STATUS_NAME = "Status";
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where is this used outside of this class?

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This is wrong. Will correct it.

@zentol zentol self-assigned this Oct 2, 2019
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Thanks for the review @zentol. I've addressed your comments and pushed a fixup.

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Merged.

@tillrohrmann tillrohrmann deleted the FLINK-14299 branch October 2, 2019 16:05
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