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https://issues.apache.org/jira/browse/ASTERIXDB-2105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16179568#comment-16179568
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Dmitry Lychagin commented on ASTERIXDB-2105:
--------------------------------------------

Multiple hints are ok as long as they agree with each other on the boradcast 
side.  If they do not then the broadcast join is not picked.

> Support broadcast join hint with multiple predicates
> ----------------------------------------------------
>
>                 Key: ASTERIXDB-2105
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2105
>             Project: Apache AsterixDB
>          Issue Type: Bug
>          Components: COMP - Compiler
>            Reporter: Dmitry Lychagin
>            Assignee: Dmitry Lychagin
>            Priority: Minor
>
> Currently broadcast join hint does not work if the join condition has 
> multiple predicates. We need to fix that. Annotating only one predicate 
> should be sufficient for the broadcast to be picked by the optimizer.



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