[
https://issues.apache.org/jira/browse/HIVE-21278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jesus Camacho Rodriguez reassigned HIVE-21278:
----------------------------------------------
> Ambiguity in grammar causes
> ----------------------------
>
> Key: HIVE-21278
> URL: https://issues.apache.org/jira/browse/HIVE-21278
> Project: Hive
> Issue Type: Bug
> Components: Parser
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
>
> These are the warnings at compilation time:
> {code}
> warning(200): org/apache/hadoop/hive/ql/parse/HiveParser.g:2439:5:
> Decision can match input such as "KW_CHECK KW_DATETIME" using multiple
> alternatives: 1, 2
> As a result, alternative(s) 2 were disabled for that input
> warning(200): org/apache/hadoop/hive/ql/parse/HiveParser.g:2439:5:
> Decision can match input such as "KW_CHECK KW_DATE {LPAREN, StringLiteral}"
> using multiple alternatives: 1, 2
> As a result, alternative(s) 2 were disabled for that input
> warning(200): org/apache/hadoop/hive/ql/parse/HiveParser.g:2439:5:
> Decision can match input such as "KW_CHECK KW_UNIONTYPE LESSTHAN" using
> multiple alternatives: 1, 2
> As a result, alternative(s) 2 were disabled for that input
> warning(200): org/apache/hadoop/hive/ql/parse/HiveParser.g:2439:5:
> Decision can match input such as "KW_CHECK {KW_EXISTS, KW_TINYINT}" using
> multiple alternatives: 1, 2
> As a result, alternative(s) 2 were disabled for that input
> warning(200): org/apache/hadoop/hive/ql/parse/HiveParser.g:2439:5:
> Decision can match input such as "KW_CHECK KW_STRUCT LESSTHAN" using multiple
> alternatives: 1, 2
> As a result, alternative(s) 2 were disabled for that input
> 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.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
