[jira] [Created] (FLINK-10243) Add option to reduce latency metrics granularity

[Shang Yuanchun (Jira)]

Chesnay Schepler created FLINK-10243:
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             Summary: Add option to reduce latency metrics granularity
                 Key: FLINK-10243
                 URL: https://issues.apache.org/jira/browse/FLINK-10243
             Project: Flink
          Issue Type: Sub-task
          Components: Configuration, Metrics
    Affects Versions: 1.7.0
            Reporter: Chesnay Schepler
            Assignee: Chesnay Schepler
             Fix For: 1.7.0


The latency is currently tracked separately from each operator subtask to each source subtask. The total number of latency metrics in the cluster is thus {{(# of sources) * (# of operators) * parallelism²}}, i.e. quadratic scaling.

If we'd ignore the source subtask the scaling would be a lot more manageable.



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