[PIG-1776] changing statement corresponding to alias after explain , then doing dump gives incorrect result

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.8.1
• Assignee: Thejas Nair
• Reporter: Thejas Nair
• Created: 17/Dec/10 22:28
• Updated: 25/Apr/11 21:27
• Resolved: 28/Jan/11 00:47

Description

grunt> a = load '/tmp/t2.txt' as (str:chararray, num1:int, alph : chararray);
grunt> dump a;
(ABC,1,a)
(ABC,1,b)
(ABC,1,a)
(ABC,2,b)
(DEF,1,d)
(XYZ,1,x)

grunt> c = foreach b  generate group.str, group.$1, COUNT(a.alph) ;          
grunt> dump c; -- gives correct results
(ABC,1,3)
(ABC,2,1)
(DEF,1,1)
(XYZ,1,1)

/* but dumping c after following steps gives incorrect results */

grunt> c = foreach b  generate group.$0 , (CHARARRAY)group.$1;                                                                                 
grunt> explain c;
...
...
grunt> c = foreach b  generate group.str, group.$1, COUNT(a.alph) ;
grunt> dump c;             
(ABC,1,0)
(ABC,2,0)
(DEF,1,0)
(XYZ,1,0)