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From "John Sichi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-1546) Ability to plug custom Semantic Analyzers for Hive Grammar
Date Thu, 02 Sep 2010 21:55:53 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12905687#action_12905687
] 

John Sichi commented on HIVE-1546:
----------------------------------

It's the usual tradeoffs on copy-and-paste vs factoring.  There's a significant amount of
DDL processing code which can be shared, and that will continue to grow as we add new features
(e.g. GRANT/REVOKE) which are applicable to both.


> Ability to plug custom Semantic Analyzers for Hive Grammar
> ----------------------------------------------------------
>
>                 Key: HIVE-1546
>                 URL: https://issues.apache.org/jira/browse/HIVE-1546
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Metastore
>    Affects Versions: 0.7.0
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>             Fix For: 0.7.0
>
>         Attachments: hive-1546-3.patch, hive-1546-4.patch, hive-1546.patch, hive-1546_2.patch
>
>
> It will be useful if Semantic Analysis phase is made pluggable such that other projects
can do custom analysis of hive queries before doing metastore operations on them. 

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