[PIG-3782] PushDownForEachFlatten + ColumnMapKeyPrune with user defined schema failing due to incorrect UID assignment

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.1, 0.12.0, 0.11.1
• Fix Version/s: 0.12.1, 0.13.0
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Koji Noguchi
• Created: 27/Feb/14 16:50
• Updated: 15/Apr/14 20:44
• Resolved: 16/Mar/14 03:56

Description

a = load '1.txt' as (a0:int, a1, a2:bag{});
b = load '2.txt' as (b0:int, b1);
c = foreach a generate a0, flatten(a2) as (q1, q2);
d = join c by a0, b by b0;
e = foreach d generate a0, q1, q2;
f = foreach e generate a0, (int)q1, (int)q2;
store f into 'output';

This pig script fails with
2014-02-27 11:49:45,657 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 2229: Couldn't find matching uid -1 for project (Name: Project Type: bytearray Uid: 13 Input: 0 Column: 1)