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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-21296) Avoid per-record type dispatch in PySpark createDataFrame schema verification
Date Tue, 04 Jul 2017 01:14:02 GMT

    [ https://issues.apache.org/jira/browse/SPARK-21296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16073001#comment-16073001
] 

Apache Spark commented on SPARK-21296:
--------------------------------------

User 'HyukjinKwon' has created a pull request for this issue:
https://github.com/apache/spark/pull/18521

> Avoid per-record type dispatch in PySpark createDataFrame schema verification
> -----------------------------------------------------------------------------
>
>                 Key: SPARK-21296
>                 URL: https://issues.apache.org/jira/browse/SPARK-21296
>             Project: Spark
>          Issue Type: Improvement
>          Components: PySpark
>    Affects Versions: 2.2.0
>            Reporter: Hyukjin Kwon
>
> Here, we do the type dispatch per record - https://github.com/apache/spark/blob/d935e0a9d9bb3d3c74e9529e161648caa50696b7/python/pyspark/sql/types.py#L1252-L1366
and
> https://github.com/apache/spark/blob/d935e0a9d9bb3d3c74e9529e161648caa50696b7/python/pyspark/sql/session.py#L517-L537
> This requires per-record operation cost. We should get rid of this.



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