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https://issues.apache.org/jira/browse/FLINK-9565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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yinhua.dai updated FLINK-9565:
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Description:
As per
[https://stackoverflow.com/questions/50790023/does-flink-sql-support-to-run-projections-in-parallel,]
scalar UDF in the same SQL is always evaluated sequentially even when those
UDF are irrelevant, it may increase latency when the UDF is time consuming
function.
It would be great if Flink SQL can support to run those UDF in parallel to
reduce calculation latency.
cc [~fhueske]
was:
As per
[https://stackoverflow.com/questions/50790023/does-flink-sql-support-to-run-projections-in-parallel,]
scalar UDF in the same SQL is always evaluated sequentially even when those
UDF are irrelative, it may increase latency when the UDF is time consuming
function.
It would be great if Flink SQL can support to run those UDF in parallel to
reduce calculation latency.
cc [~fhueske]
> Evaluating scalar UDFs in parallel
> ----------------------------------
>
> Key: FLINK-9565
> URL: https://issues.apache.org/jira/browse/FLINK-9565
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Affects Versions: 1.4.2
> Reporter: yinhua.dai
> Priority: Major
>
> As per
> [https://stackoverflow.com/questions/50790023/does-flink-sql-support-to-run-projections-in-parallel,]
> scalar UDF in the same SQL is always evaluated sequentially even when those
> UDF are irrelevant, it may increase latency when the UDF is time consuming
> function.
> It would be great if Flink SQL can support to run those UDF in parallel to
> reduce calculation latency.
>
> cc [~fhueske]
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