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From Herman van Hövell (Jira) <j...@apache.org>
Subject [jira] [Created] (SPARK-29346) Create Aggregating Accumulator
Date Thu, 03 Oct 2019 11:00:00 GMT
Herman van Hövell created SPARK-29346:
-----------------------------------------

             Summary: Create Aggregating Accumulator
                 Key: SPARK-29346
                 URL: https://issues.apache.org/jira/browse/SPARK-29346
             Project: Spark
          Issue Type: New Feature
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Herman van Hövell
            Assignee: Herman van Hövell


Create an accumulator that can compute a global aggregate over an arbitrary number of expressions.
We will use this to implement observable metrics.



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