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https://issues.apache.org/jira/browse/SPARK-35807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17383698#comment-17383698
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Apache Spark commented on SPARK-35807:
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User 'itholic' has created a pull request for this issue:
https://github.com/apache/spark/pull/33379
> Deprecate the `num_files` argument
> ----------------------------------
>
> Key: SPARK-35807
> URL: https://issues.apache.org/jira/browse/SPARK-35807
> Project: Spark
> Issue Type: Sub-task
> Components: PySpark
> Affects Versions: 3.2.0
> Reporter: Haejoon Lee
> Priority: Major
>
> We should deprecate the num_files argument in [DataFrame.to_csv
> |https://koalas.readthedocs.io/en/latest/reference/api/databricks.koalas.DataFrame.to_csv.html]and
>
> [DataFrame.to_json|https://koalas.readthedocs.io/en/latest/reference/api/databricks.koalas.DataFrame.to_json.html].
> Because the behavior of num_files is not actually specify the number of
> files, but it specifies the number of partition.
> So we should encourage users to use
> [DataFrame.spark.repartition|https://koalas.readthedocs.io/en/latest/reference/api/databricks.koalas.DataFrame.spark.repartition.html]
> instead in the warning message.
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