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https://issues.apache.org/jira/browse/SPARK-44734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allison Wang updated SPARK-44734:
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Description:
In addition to type mappings between Spark data types and Python data types
(SPARK-44733), we should add the type casting rules for regular and
arrow-optimized Python UDFs/UDTFs.
We currently have this table in code:
* Arrow:
[https://github.com/apache/spark/blob/master/python/pyspark/sql/pandas/functions.py#L311-L329]
* Python UDF:
[https://github.com/apache/spark/blob/master/python/pyspark/sql/udf.py#L101-L116]
We should add a proper documentation page for the type casting rules.
was:
In addition to type mappings between Spark data types and Python data types, we
should add the type casting rules for regular and arrow-optimized Python
UDFs/UDTFs.
We currently have this table in code:
* Arrow:
[https://github.com/apache/spark/blob/master/python/pyspark/sql/pandas/functions.py#L311-L329]
* Python UDF:
[https://github.com/apache/spark/blob/master/python/pyspark/sql/udf.py#L101-L116]
We should add a proper documentation page for the type casting rules.
> Add documentation for type casting rules in Python UDFs/UDTFs
> -------------------------------------------------------------
>
> Key: SPARK-44734
> URL: https://issues.apache.org/jira/browse/SPARK-44734
> Project: Spark
> Issue Type: Sub-task
> Components: PySpark
> Affects Versions: 4.0.0
> Reporter: Allison Wang
> Priority: Major
>
> In addition to type mappings between Spark data types and Python data types
> (SPARK-44733), we should add the type casting rules for regular and
> arrow-optimized Python UDFs/UDTFs.
> We currently have this table in code:
> * Arrow:
> [https://github.com/apache/spark/blob/master/python/pyspark/sql/pandas/functions.py#L311-L329]
> * Python UDF:
> [https://github.com/apache/spark/blob/master/python/pyspark/sql/udf.py#L101-L116]
> We should add a proper documentation page for the type casting rules.
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