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From "Pete Wyckoff (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-95) improve cli error messages by lowering backtracking to 1
Date Tue, 02 Dec 2008 02:39:44 GMT

     [ https://issues.apache.org/jira/browse/HIVE-95?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Pete Wyckoff updated HIVE-95:

    Assignee: Pete Wyckoff

just need to add "k=1" to the hive grammar options.

I tried removing backtracking altogether, but that is difficult due to some left recursion
in the grammar and it isn't clear how much more benefit it would give.

> improve cli error messages by lowering backtracking to 1
> --------------------------------------------------------
>                 Key: HIVE-95
>                 URL: https://issues.apache.org/jira/browse/HIVE-95
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Pete Wyckoff
>            Assignee: Pete Wyckoff
> Stop antlr from backtracking so much should (and does) improve error messages since antlr
will report the error closer to where it happened.

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