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From "Ashutosh Chauhan (JIRA)" <>
Subject [jira] [Resolved] (HIVE-9732) [CBO] Add InsertExchangeRule for join
Date Fri, 20 Feb 2015 18:11:12 GMT


Ashutosh Chauhan resolved HIVE-9732.
       Resolution: Fixed
    Fix Version/s: cbo-branch

I removed restriction for join type. I was defensive earlier, but don't see a reason for being

Regarding, algo selection I didn't put in that comment because on which tree form that join
algo selection algorithm will run is not clear. Arguably one can run it on tree containing
exchange operator just so it might make costing easier for shuffle and afterwards run rule
on tree to transform it as per algo annotation of join type. So, hesitated to put in that
comment. Once decision is made in that regard, I will add comment appropriately in this class.

Committed to branch.

> [CBO] Add InsertExchangeRule for join
> -------------------------------------
>                 Key: HIVE-9732
>                 URL:
>             Project: Hive
>          Issue Type: Task
>          Components: CBO
>    Affects Versions: cbo-branch
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>             Fix For: cbo-branch
>         Attachments: HIVE-9732.cbo.patch
> Inserts Exchange operator on optimized calcite operator tree. This facilitate easier
translation to Hive operator tree.

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