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From "Shaoxuan Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5983) Replace for/foreach/map in aggregates by while loops
Date Tue, 07 Mar 2017 15:24:38 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15899594#comment-15899594
] 

Shaoxuan Wang commented on FLINK-5983:
--------------------------------------

Can we consider implementing the runtime code and even the built-in aggregate functions in
Java

> Replace for/foreach/map in aggregates by while loops
> ----------------------------------------------------
>
>                 Key: FLINK-5983
>                 URL: https://issues.apache.org/jira/browse/FLINK-5983
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Timo Walther
>
> Right now there is a mixture of different kinds of loops within aggregate functions.
Although performance is not the main goal at the moment, we should focus on performant execution
especially in this runtime functions.
> e.g. {{DataSetTumbleCountWindowAggReduceGroupFunction}}
> We should replace loops, maps etc. by primitive while loops.



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