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https://issues.apache.org/jira/browse/SPARK-37953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jiaan.geng updated SPARK-37953:
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Description:
Currently, Spark provides UnevaluableAggregate to replace function with another
function which must be exists in build-in functions, so UnevaluableAggregate
make Spark could reuse the implement of build-in function.
However, the sub classes of UnevaluableAggregate looks cumbersome.
was:
Currently, Spark provides RuntimeReplaceable to replace function with another
function. The last function must be exists in build-in functions, so
RuntimeReplaceable make Spark could reuse the implement of build-in function.
But RuntimeReplaceable not works for aggregate function.
> Improve the implement of UnevaluableAggregate
> ---------------------------------------------
>
> Key: SPARK-37953
> URL: https://issues.apache.org/jira/browse/SPARK-37953
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: jiaan.geng
> Priority: Major
>
> Currently, Spark provides UnevaluableAggregate to replace function with
> another function which must be exists in build-in functions, so
> UnevaluableAggregate make Spark could reuse the implement of build-in
> function.
> However, the sub classes of UnevaluableAggregate looks cumbersome.
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