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Posted to issues@spark.apache.org by "Enrico Minack (Jira)" <ji...@apache.org> on 2021/07/27 19:38:00 UTC

[jira] [Created] (SPARK-36319) Have Observation return Map instead of Row

Enrico Minack created SPARK-36319:
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             Summary: Have Observation return Map instead of Row
                 Key: SPARK-36319
                 URL: https://issues.apache.org/jira/browse/SPARK-36319
             Project: Spark
          Issue Type: Improvement
          Components: Java API, PySpark, SQL
    Affects Versions: 3.3.0
            Reporter: Enrico Minack


As [~gurwls223] pointed out, the {{Observation}} API (Scala, Java, PySpark) could return a {{Map}} / {{Dict}}. It currently returns {{Row}} simply because the metrics are (internal to {{Observation}}) retrieved from the listener as rows. Since that is hidden from the user by the {{Observation}} API, there is no need to return {{Row}}.

If there is some value in the original {{Row}}, both could be provided via {{getAsRow}} and {{getAsMap}}.

The {{Observation}} API has been added to Spark in unreleased 3.3.0, so it should not be a blocker to remove the {{Row}} return type in 3.3.0 again.



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