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Posted to issues@spark.apache.org by "Ian Cook (Jira)" <ji...@apache.org> on 2024/05/16 07:09:00 UTC

[jira] [Created] (SPARK-48302) Null values in map columns of PyArrow tables are replaced with empty lists

Ian Cook created SPARK-48302:
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             Summary: Null values in map columns of PyArrow tables are replaced with empty lists
                 Key: SPARK-48302
                 URL: https://issues.apache.org/jira/browse/SPARK-48302
             Project: Spark
          Issue Type: Bug
          Components: PySpark
    Affects Versions: 4.0.0
            Reporter: Ian Cook


Because of a limitation in PyArrow, when PyArrow Tables are passed to spark.createDataFrame(), null values in MapArray columns are replaced with empty lists.

The PySpark function where this happens is pyspark.sql.pandas.types.
_check_arrow_array_timestamps_localize.
Also see [https://github.com/apache/arrow/issues/41684].



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