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From "Sean Hsuan-Yi Chu (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (DRILL-4577) Improve performance for query on INFORMATION_SCHEMA when HIVE is plugged in
Date Tue, 03 May 2016 05:45:13 GMT

     [ https://issues.apache.org/jira/browse/DRILL-4577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Hsuan-Yi Chu resolved DRILL-4577.
--------------------------------------
    Resolution: Fixed

Resolved in commit-id: b8f6ebc651445ccecd3e393250f6cd2781fc07e3

> Improve performance for query on INFORMATION_SCHEMA when HIVE is plugged in
> ---------------------------------------------------------------------------
>
>                 Key: DRILL-4577
>                 URL: https://issues.apache.org/jira/browse/DRILL-4577
>             Project: Apache Drill
>          Issue Type: Improvement
>          Components: Storage - Hive
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Sean Hsuan-Yi Chu
>             Fix For: 1.7.0
>
>
> A query such as 
> {code}
> select * from INFORMATION_SCHEMA.`TABLES` 
> {code}
> is converted as calls to fetch all tables from storage plugins. 
> When users have Hive, the calls to hive metadata storage would be: 
> 1) get_table
> 2) get_partitions
> However, the information regarding partitions is not used in this type of queries. Beside,
a more efficient way is to fetch tables is to use get_multi_table call.



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