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Posted to issues@hive.apache.org by "Pengcheng Xiong (JIRA)" <ji...@apache.org> on 2015/08/05 23:50:04 UTC

[jira] [Updated] (HIVE-11387) CBO: Calcite Operator To Hive Operator (Calcite Return Path) : fix reduce_deduplicate optimization

     [ https://issues.apache.org/jira/browse/HIVE-11387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pengcheng Xiong updated HIVE-11387:
-----------------------------------
    Attachment: HIVE-11387.05.patch

rebase patch

> CBO: Calcite Operator To Hive Operator (Calcite Return Path) : fix reduce_deduplicate optimization
> --------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-11387
>                 URL: https://issues.apache.org/jira/browse/HIVE-11387
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-11387.01.patch, HIVE-11387.02.patch, HIVE-11387.03.patch, HIVE-11387.04.patch, HIVE-11387.05.patch
>
>
> {noformat}
> The main problem is that, due to return path, now we may have (RS1-GBY2)-(RS3-GBY4) when map.aggr=false, i.e., no map aggr. However, in the non-return path, it will be treated as (RS1)-(GBY2-RS3-GBY4). The main problem is that it does not take into account of the setting.
> {noformat}



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