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From "Laszlo Bodor (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-21293) Fix ambiguity in grammar warnings at compilation time (II)
Date Fri, 22 Feb 2019 11:56:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-21293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Laszlo Bodor updated HIVE-21293:
--------------------------------
    Status: Patch Available  (was: Open)

> Fix ambiguity in grammar warnings at compilation time (II)
> ----------------------------------------------------------
>
>                 Key: HIVE-21293
>                 URL: https://issues.apache.org/jira/browse/HIVE-21293
>             Project: Hive
>          Issue Type: Bug
>          Components: Parser
>    Affects Versions: 4.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Laszlo Bodor
>            Priority: Major
>         Attachments: HIVE-21293.01.patch
>
>
> These are the warnings at compilation time:
> {code}
> warning(200): IdentifiersParser.g:424:5:
> Decision can match input such as "KW_UNKNOWN" using multiple alternatives: 1, 10
> As a result, alternative(s) 10 were disabled for that input
> {code}
> This means that multiple parser rules can match certain query text, possibly leading
to unexpected errors at parsing time.



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