Incorrect input types passed on to eval function
------------------------------------------------
Key: PIG-2004
URL: https://issues.apache.org/jira/browse/PIG-2004
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.9.0
Reporter: Vivek Padmanabhan
Fix For: 0.9.0
The below script fails by throwing a ClassCastException from the MAX udf. The
udf expects the value of the bag supplied to be databyte array, but at run time
the udf gets the actual type, ie Double in this case. This causes the script
execution to fail with exception;
| Caused by: java.lang.ClassCastException: java.lang.Double cannot be cast to
org.apache.pig.data.DataByteArray
The same script runs properly with Pig 0.8.
{code}
A = LOAD 'myinput' as (f1,f2,f3);
B = foreach A generate f1,f2+f3/1000.0 as doub;
C = group B by f1;
D = foreach D generate (long)(MAX(B.doub)) as f4;
dump D;
{code}
myinput
-------
a 1000 12345
b 2000 23456
c 3000 34567
a 1500 54321
b 2500 65432
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