Secondary sort issue on nested desc sort
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Key: PIG-1193
URL: https://issues.apache.org/jira/browse/PIG-1193
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.6.0
Reporter: Daniel Dai
Assignee: Daniel Dai
Fix For: 0.6.0
Secondary sort doing nested desc sort order incorrectly if the following
conditions meet:
1. We have sort and UDF in nested plan
2. This UDF will use the same input tuples more than once
3. The input tuples are sorted in desc order
Here is a test case:
{code}
register sequence.jar;
A = load 'input' as (a0:int);
B = group A ALL;
C = foreach B {
D = order A by a0 desc;
generate sequence.CUMULATIVE(D,D);
};
dump C;
{code}
input file:
{code}
3
4
{code}
The input for the UDF is:
{code}
({(4),(3)},{(3),(4)})
{code}
The first bag is sorted desc, but the second is not.
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