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From "Zoltan Haindrich (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-21980) Parsing time can be high in case of deeply nested subqueries
Date Tue, 16 Jul 2019 09:24:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-21980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zoltan Haindrich updated HIVE-21980:
------------------------------------
       Resolution: Fixed
    Fix Version/s: 4.0.0
           Status: Resolved  (was: Patch Available)

pushed to master. Thank you Vineet for reviewing the changes!

> Parsing time can be high in case of deeply nested subqueries
> ------------------------------------------------------------
>
>                 Key: HIVE-21980
>                 URL: https://issues.apache.org/jira/browse/HIVE-21980
>             Project: Hive
>          Issue Type: Improvement
>          Components: Parser
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>             Fix For: 4.0.0
>
>         Attachments: HIVE-21980.01.patch, HIVE-21980.01.patch, HIVE-21980.02.patch, HIVE-21980.03.patch
>
>
> for queries which are recursively doing:
> {code}
> SELECT ...
> FROM (SELECT ...
>              FROM ( [...]
>              ) JOIN
>             (SELECT ...
>             FROM ( [...] )
> JOIN ( [...]
> )
> {code}



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