[PIG-1991] Leading Underscore (_) not allowed in schema names

• Type: Wish
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 0.9.0
• Component/s: grunt
• Assignee: Unassigned
• Reporter: Viraj Bhat
• Created: 12/Apr/11 19:02
• Updated: 26/Aug/15 08:13
• Resolved: 15/Jul/11 22:18

Description

I have a Pig script which uses underscore in its schema name (_a)

a = load 'test.txt' as (_a:long, b:chararray);
dump a;

This causes an error in Pig:

<line 1, column 24> Unexpected character '_'
2011-04-12 11:58:59,624 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1200: <line 1, column 24> Unexpected character '_'

Stack trace:
Pig Stack Trace
---------------
ERROR 1200: <line 1, column 24> Unexpected character '_'

Failed to parse: <line 1, column 24> Unexpected character '_'
at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:83)
at org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1555)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1527)
at org.apache.pig.PigServer.registerQuery(PigServer.java:582)
at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:917)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:386)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:176)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:152)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:76)
at org.apache.pig.Main.run(Main.java:489)
at org.apache.pig.Main.main(Main.java:108)
================================================================================

Schema names should be allowed to have underscores.

Viraj