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https://issues.apache.org/jira/browse/SPARK-45649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan updated SPARK-45649:
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Attachment: test_table.parquet.zip
> Unify the prepare framework for `OffsetWindowFunctionFrame`
> -----------------------------------------------------------
>
> Key: SPARK-45649
> URL: https://issues.apache.org/jira/browse/SPARK-45649
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.0.0
> Reporter: Jiaan Geng
> Assignee: Jiaan Geng
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Attachments: test_table.parquet.zip
>
>
> Currently, the implementation the `prepare` of all the
> `OffsetWindowFunctionFrame` have the same code logic show below.
> ```
> override def prepare(rows: ExternalAppendOnlyUnsafeRowArray): Unit = {
> if (offset > rows.length) {
> fillDefaultValue(EmptyRow)
> } else {
> resetStates(rows)
> if (ignoreNulls) {
> ...
> } else {
> ...
> }
> }
> }
> ```
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