[PIG-2063] Regression: an invalid query regarding union onschema becoming valid

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 0.9.0
• Fix Version/s: 0.9.0
• Assignee: Thejas Nair
• Reporter: Xuefu Zhang
• Created: 12/May/11 16:28
• Updated: 04/Aug/11 00:35
• Resolved: 13/May/11 00:25

Description

The following query fails in 0.8:

A = load 'x' as (x:long, y:chararray);
B = load 'y' as (x:long, y:float);
C = union onschema A, B;

grunt> C = union onschema A, B;
2011-05-12 09:01:47,031 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1031: Incompatible types for merging schemas. Field schema: y: chararray Other field schema: y: float

However, in 0.9 validation doesn't catch the error. It seems float is cast to chararray automatically.

grunt> describe C;
C:

{x: long,y: chararray}