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https://issues.apache.org/jira/browse/SPARK-42998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ruifeng Zheng resolved SPARK-42998.
-----------------------------------
Fix Version/s: 3.4.0
Resolution: Fixed
Issue resolved by pull request 40627
[https://github.com/apache/spark/pull/40627]
> Fix DataFrame.collect with null struct.
> ---------------------------------------
>
> Key: SPARK-42998
> URL: https://issues.apache.org/jira/browse/SPARK-42998
> Project: Spark
> Issue Type: Sub-task
> Components: Connect
> Affects Versions: 3.4.0
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
> Priority: Major
> Fix For: 3.4.0
>
>
> In Spark Connect:
> {code:python}
> >>> df = spark.sql("values (1, struct('a' as x)), (null, null) as t(a, b)")
> >>> df.show()
> +----+----+
> | a| b|
> +----+----+
> | 1| {a}|
> |null|null|
> +----+----+
> >>> df.collect()
> [Row(a=1, b=Row(x='a')), Row(a=None, b=<Row()>)]
> {code}
> whereas PySpark:
> {code:python}
> >>> df.collect()
> [Row(a=1, b=Row(x='a')), Row(a=None, b=None)]
> {code}
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