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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-2944) Collect, expose and display operator-specific stats
Date Fri, 30 Oct 2015 09:22:27 GMT
Fabian Hueske created FLINK-2944:

             Summary: Collect, expose and display operator-specific stats
                 Key: FLINK-2944
                 URL: https://issues.apache.org/jira/browse/FLINK-2944
             Project: Flink
          Issue Type: New Feature
          Components: Local Runtime, Webfrontend
            Reporter: Fabian Hueske

It would be nice to collect operator-specific stats such as:
- HashJoin: bytes spilled build side, bytes spilled probe side, num keys (build / probe)
- GroupBy: bytes spilled, num keys, max group size, avg. group size
- Combiner: combine rate (in/out ratio)
- Streaming Ops: avg. throughput
- etc.

and display these stats in the webUI. 

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