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From "Rui Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-17877) HoS: combine equivalent DPP sink works
Date Wed, 25 Oct 2017 07:14:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rui Li updated HIVE-17877:
--------------------------
    Description: 
Suppose part1 and part2 are partitioned tables. The simplest use case should be something
like:
{code}
explain
select * from
  (select part1.key, part1.value from part1 join src on part1.p=src.key) a
union all
  (select part2.key, part2.value from part2 join src on part2.p=src.key);
{code}

> HoS: combine equivalent DPP sink works
> --------------------------------------
>
>                 Key: HIVE-17877
>                 URL: https://issues.apache.org/jira/browse/HIVE-17877
>             Project: Hive
>          Issue Type: Improvement
>          Components: Spark
>            Reporter: Rui Li
>            Assignee: Rui Li
>         Attachments: HIVE-17877.1.patch
>
>
> Suppose part1 and part2 are partitioned tables. The simplest use case should be something
like:
> {code}
> explain
> select * from
>   (select part1.key, part1.value from part1 join src on part1.p=src.key) a
> union all
>   (select part2.key, part2.value from part2 join src on part2.p=src.key);
> {code}



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