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Posted to issues@flink.apache.org by "Piotr Nowojski (JIRA)" <ji...@apache.org> on 2019/01/02 14:39:00 UTC

[jira] [Commented] (FLINK-9717) Flush state of one side of the join if other side is bounded

    [ https://issues.apache.org/jira/browse/FLINK-9717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732106#comment-16732106 ] 

Piotr Nowojski commented on FLINK-9717:
---------------------------------------

What do you [~kisimple] mean by:
> When considering about joins with bounded data, I would prefer the side input solution in which there is no `MAX_WATERMARK` if I understand correctly.
?

> Flush state of one side of the join if other side is bounded
> ------------------------------------------------------------
>
>                 Key: FLINK-9717
>                 URL: https://issues.apache.org/jira/browse/FLINK-9717
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API &amp; SQL
>    Affects Versions: 1.5.0
>            Reporter: Piotr Nowojski
>            Priority: Major
>
> Whenever one side of join receives {{MAX_WATERMARK}}, other side in joins (both normal and versioned joins) could flush the state from other side.
> This highly useful optimisation that would speed up versioned joins and would allow normal joins of large unbounded streams with bounded tables (for example some static data).



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