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From "Hyukjin Kwon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-26832) Avoid project creation per record at Python's grouped vectorized UDF
Date Wed, 06 Feb 2019 10:05:00 GMT
Hyukjin Kwon created SPARK-26832:
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             Summary: Avoid project creation per record at Python's grouped vectorized UDF
                 Key: SPARK-26832
                 URL: https://issues.apache.org/jira/browse/SPARK-26832
             Project: Spark
          Issue Type: Improvement
          Components: PySpark, SQL
    Affects Versions: 2.4.0, 2.3.2, 3.0.0
            Reporter: Hyukjin Kwon


https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/python/FlatMapGroupsInPandasExec.scala#L148

this line seems to creating projection per each record.



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