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Posted to issues@spark.apache.org by "Liang-Chi Hsieh (JIRA)" <ji...@apache.org> on 2017/10/05 05:14:01 UTC

[jira] [Created] (SPARK-22206) gapply in R can't work on empty grouping columns

Liang-Chi Hsieh created SPARK-22206:
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             Summary: gapply in R can't work on empty grouping columns
                 Key: SPARK-22206
                 URL: https://issues.apache.org/jira/browse/SPARK-22206
             Project: Spark
          Issue Type: Bug
          Components: SparkR, SQL
    Affects Versions: 2.2.0
            Reporter: Liang-Chi Hsieh


{{gapply}} in R invokes {{FlatMapGroupsInRExec}} in runtime, but {{FlatMapGroupsInRExec.requiredChildDistribution}} didn't consider empty grouping attributes. So {{gapply}} can't work on empty grouping columns.



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