[PIG-3532] Empty plan fails to run

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: tez-branch
• Component/s: impl
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 22/Oct/13 00:27
• Updated: 21/Nov/14 05:58
• Resolved: 22/Oct/13 20:56

Description

Currently run a Pig script with empty plan fail:
a = load 'input.txt';
b = group a by a0;
store b into 'ooo';

Non empty plan works:
a = load 'input.txt' as (a0:chararray);
b = group a by a0;
c = foreach b generate group, COUNT(a) as count;
d = group c by count;
store d into 'ooo';

Put a simple patch contains the fix.