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Posted to issues@spark.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2026/05/15 11:04:00 UTC

[jira] [Updated] (SPARK-55792) Optimize DataFrame.diff axis=0 to avoid unpartitioned Window

     [ https://issues.apache.org/jira/browse/SPARK-55792?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SPARK-55792:
-----------------------------------
    Labels: pull-request-available  (was: )

> Optimize DataFrame.diff axis=0 to avoid unpartitioned Window
> ------------------------------------------------------------
>
>                 Key: SPARK-55792
>                 URL: https://issues.apache.org/jira/browse/SPARK-55792
>             Project: Spark
>          Issue Type: Bug
>          Components: Pandas API on Spark
>    Affects Versions: 4.1.1
>            Reporter: Devin Petersohn
>            Priority: Major
>              Labels: pull-request-available
>
> DataFrame.diff(axis=0) currently uses Spark's Window without a partition specification, which will have scaling issues for large datasets. We should try to optimize away the unbounded window (e.g., by using a partitioned window similar to other projects in the space).



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