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https://issues.apache.org/jira/browse/FLINK-7198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16092722#comment-16092722
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Chesnay Schepler commented on FLINK-7198:
-----------------------------------------
There's a separate {{JobManagerMetricGroup}} in each {{JobManager}}. The host
name is passed to the group as a constructor argument.
> Datadog Metric Reporter reports incorrect host for JobManager
> -------------------------------------------------------------
>
> Key: FLINK-7198
> URL: https://issues.apache.org/jira/browse/FLINK-7198
> Project: Flink
> Issue Type: Bug
> Components: Metrics
> Affects Versions: 1.3.1
> Environment: RHEL 7.3, Mesos 1.3, Datadog
> Reporter: Robert Batts
> Priority: Minor
>
> When using the Datadog Metric Reporter with a Mesos deployed Flink 1.3.1
> cluster the JobManager is reported to Datadog with a tag of host:127.0.0.1.
> The TaskManagers report with the correct tag (i.e. host:mesos-02.place.com),
> so this just appears to be an issue with the way host information is gathered
> for Datadog.
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