[SPARK-13277] ANTLR ignores other rule using the USING keyword

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: SQL
• Assignee: L. C. Hsieh
• Reporter: Herman van Hövell
• Created: 10/Feb/16 21:49
• Updated: 11/Feb/16 21:56
• Resolved: 11/Feb/16 20:10

Description

ANTLR currently emits the following warning during compilation:

warning(200): org/apache/spark/sql/catalyst/parser/SparkSqlParser.g:938:7: 
Decision can match input such as "KW_USING Identifier" using multiple alternatives: 2, 3

As a result, alternative(s) 3 were disabled for that input

This means that some of the functionality of the parser is disabled. This is introduced by the migration of the DDLParsers (https://github.com/apache/spark/pull/10723). We should be able to fix this by introducing a syntactic predicate for USING.

cc viirya

Issue Links

• links to: [Github] Pull Request #11168 (viirya)
• links to: [Github] Pull Request #11174 (hvanhovell)