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From "yinhua.dai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9565) Evaluating scalar UDFs in parallel
Date Wed, 20 Jun 2018 09:13:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16517958#comment-16517958
] 

yinhua.dai commented on FLINK-9565:
-----------------------------------

[~fhueske] [~twalthr]

Just wondering whether this could be planned in the near release?

Thanks.

> 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 &amp; 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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