[PIG-613] Casting complex type(tuple/bag/map) does not take effect

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.2.0
• Fix Version/s: 0.7.0
• Component/s: impl
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Viraj Bhat
• Created: 09/Jan/09 00:15
• Updated: 02/May/13 02:29
• Resolved: 24/Feb/10 19:34

Description

Consider the following Pig script which casts return values of the SQUARE UDF which are tuples of doubles to long. The describe output of B shows it is long, however the result is still double.

register statistics.jar;
A = load 'myfloatdata.txt' using PigStorage() as (doublecol:double);
B = foreach A generate (tuple(long))statistics.SQUARE(doublecol) as squares:(loadtimesq);
describe B;
explain B;
dump B;

===========================================
Describe output of B:
B:

{squares: (loadtimesq: long)}

===========================================================
Sample output of B:
((7885.44))
((792098.2200010001))
((1497360.9268889998))
((50023.7956))
((0.972196))
((0.30980356))
((9.9760144E-7))
===========================================================
Cause: The cast for Tuples has not been implemented in POCast.java

Issue Links

• is blocked by: PIG-616 Casts to complex types do not work as expected
• is depended upon by: PIG-1243 Passing Complex map types to and from streaming causes a problem
• is related to: PIG-1758 Deep cast of complex type