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From "Anton Kedin (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (BEAM-3191) [SQL] Implement Stateful Join
Date Wed, 13 Dec 2017 22:30:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-3191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16290047#comment-16290047
] 

Anton Kedin edited comment on BEAM-3191 at 12/13/17 10:29 PM:
--------------------------------------------------------------

First we need to understand what meaningful join would mean: https://issues.apache.org/jira/browse/BEAM-3190


was (Author: kedin):
First we need to understand what meaningful join would mean

> [SQL] Implement Stateful Join
> -----------------------------
>
>                 Key: BEAM-3191
>                 URL: https://issues.apache.org/jira/browse/BEAM-3191
>             Project: Beam
>          Issue Type: Bug
>          Components: dsl-sql
>            Reporter: Anton Kedin
>
> For binary key-joins, we probably could implement stateful join.
> Things to consider:
>  - identify primary keys for the inputs if possible;
>  - otherwise buffer both collections, correctly discard collections prefixes on timer;



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