[jira] [Created] (SPARK-4874) Report number of records read/written in a task

[Kostas Sakellis (JIRA)]

Kostas Sakellis created SPARK-4874:
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             Summary: Report number of records read/written in a task
                 Key: SPARK-4874
                 URL: https://issues.apache.org/jira/browse/SPARK-4874
             Project: Spark
          Issue Type: Improvement
            Reporter: Kostas Sakellis


This metric will help us find key skew using the WebUI



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