[PIG-1795] new parser : duplicate ConstantExpressions created in inner plan

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.9.0
• Component/s: impl
• Assignee: Xuefu Zhang
• Reporter: Thejas Nair
• Created: 10/Jan/11 17:51
• Updated: 04/Aug/11 00:34
• Resolved: 18/Mar/11 00:32

Description

For the query -

A = load 'x' using org.apache.pig.TextLoader( 'a', 'b' ) as ( u:int, v:long, w:bytearray); 
B = filter A by 2 > 1;

The plan generated has duplicate ConstExpressions in the inner plan of the filter -

Generated logical plan: #-----------------------------------------------
# New Logical Plan:
#-----------------------------------------------
B: (Name: LOFilter Schema: null)
|   |
|   (Name: Constant Type: null Uid: null)
|   
|   (Name: GreaterThan Type: null Uid: null)
|   |
|   |---(Name: Constant Type: null Uid: null)
|   |
|   |---(Name: Constant Type: null Uid: null)
|   
|   (Name: Constant Type: null Uid: null)
|
|---A: (Name: LOLoad Schema: null)