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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-26832) Avoid project creation per record at Python's grouped vectorized UDF
Date Wed, 06 Feb 2019 10:08:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-26832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-26832:
------------------------------------

    Assignee:     (was: Apache Spark)

> 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: 2.3.2, 2.4.0, 3.0.0
>            Reporter: Hyukjin Kwon
>            Priority: Major
>
> 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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