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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12542) Create HiveRelFactories
Date Thu, 17 Dec 2015 18:51:47 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15062539#comment-15062539
] 

Pengcheng Xiong commented on HIVE-12542:
----------------------------------------

patch LGTM +1. pending QA test.

> Create HiveRelFactories
> -----------------------
>
>                 Key: HIVE-12542
>                 URL: https://issues.apache.org/jira/browse/HIVE-12542
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO
>    Affects Versions: 2.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-12542.01.patch, HIVE-12542.02.patch, HIVE-12542.patch
>
>
> Calcite 1.5.0 introduced the use of RelFactories to create the operators. In particular,
RelFactories contains the factories for all the operators in the system. Although we can still
implement old rules by providing each individual factory (the constructor is deprecated, but
it won't be removed till Calcite 2.0.0 is out), new rules will only provide constructors based
on RelFactories. Thus, we propose to migrate immediately to the new interface.



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