[jira] [Updated] (HIVE-14497) Fine control for using materialized views in rewriting

["Lefty Leverenz (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-14497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lefty Leverenz updated HIVE-14497:
----------------------------------
    Labels: TODOC2.3  (was: TODOC2.2)

> Fine control for using materialized views in rewriting
> ------------------------------------------------------
>
>                 Key: HIVE-14497
>                 URL: https://issues.apache.org/jira/browse/HIVE-14497
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Materialized views
>    Affects Versions: 2.2.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>              Labels: TODOC2.3
>             Fix For: 2.3.0
>
>
> Follow-up of HIVE-14495. Since the number of materialized views in the system might grow very large, and query rewriting using materialized views might be very expensive, we need to include a mechanism to enable/disable materialized views for query rewriting.
> Thus, we should extend the CREATE MATERIALIZED VIEW statement as follows:
> {code:sql}
> CREATE MATERIALIZED VIEW [IF NOT EXISTS] [db_name.]materialized_view_name
>   [BUILD DEFERRED]
>   [ENABLE REWRITE] -- NEW!
>   [COMMENT materialized_view_comment]
>   [
>    [ROW FORMAT row_format] 
>    [STORED AS file_format]
>      | STORED BY 'storage.handler.class.name' [WITH SERDEPROPERTIES (...)]
>   ]
>   [LOCATION hdfs_path]
>   [TBLPROPERTIES (property_name=property_value, ...)]
>   AS select_statement;
> {code}



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