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https://issues.apache.org/jira/browse/FLINK-9565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17336623#comment-17336623
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Flink Jira Bot commented on FLINK-9565:
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This issue was labeled "stale-major" 7 ago and has not received any updates so
it is being deprioritized. If this ticket is actually Major, please raise the
priority and ask a committer to assign you the issue or revive the public
discussion.
> 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 SQL / API
> Affects Versions: 1.4.2
> Reporter: yinhua.dai
> Priority: Major
> Labels: stale-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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