[jira] [Created] (FLINK-10822) Configurable MetricQueryService interval

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

Chesnay Schepler created FLINK-10822:
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             Summary: Configurable MetricQueryService interval
                 Key: FLINK-10822
                 URL: https://issues.apache.org/jira/browse/FLINK-10822
             Project: Flink
          Issue Type: Improvement
          Components: Metrics
            Reporter: Chesnay Schepler
            Assignee: Chesnay Schepler
             Fix For: 1.8.0


The {{MetricQueryService}} is used for transmitting metrics from TaskManagers to the JobManager, in order to expose them via REST and by extension the WebUI.

By default the JM will poll metrics at most every 10 seconds. This has an adverse effect on the duration of our end-to-end tests, which for example query metrics via the REST API to determine whether the cluster has started. If during the first poll no TM is available it will take another 10 second for updated information to be available.

By making this interval configurable we could this reduce the test duration. Additionally this could serve as a switch to disable the {{MetricQueryService}}.



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