[PIG-5235] Typecast with as-clause fails for tuple/bag with an empty schema

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17.0
• Hadoop Flags: Reviewed
• Assignee: Koji Noguchi
• Reporter: Koji Noguchi
• Created: 16/May/17 13:57
• Updated: 21/Jun/17 09:15
• Resolved: 25/May/17 15:14

Description

Following script fails with trunk(0.17).

a = load 'test.txt' as (mytuple:tuple (), gpa:float);
b = foreach a generate mytuple as (mytuple2:(name:int, age:double));
store b into '/tmp/deleteme';

2017-05-16 09:52:31,280 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 2999: Unexpected internal error. null

(This is a continuation from the as-clause fix at PIG-2315 and follow up jira PIG-4933)