[PIG-2536] Extend pig to support DISTINCT x.(project)

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Fix Version/s: 0.11
• Patch Info: Patch Available
• Assignee: Jonathan Coveney
• Reporter: Jonathan Coveney
• Created: 15/Feb/12 22:30
• Updated: 24/Dec/12 07:13
• Resolved: 22/Sep/12 17:55

Description

Currently, pig does not allow this syntax:

A = load 'thing' (x:int, y:int, z:int);
B = distinct A.x;
C = distinct A.(y,z)
D = distinct C.$0;

and so on. With this patch, it does. I should probably add more tests, though it's a simple patch... it just turns distinct rel.proj into syntactic sugar for distinct (foreach rel generate proj)