[PIG-1210] fieldsToRead send the same fields more than once in some cases

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.6.0
• Fix Version/s: 0.6.0
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 29/Jan/10 01:29
• Updated: 24/Mar/10 22:16
• Resolved: 30/Jan/10 02:23

Description

This bug will happen if the following condition meet:
1. LoadFunc is susceptible to duplicated fields in fieldsToRead. The only LoadFunc we notice now is Zebra.
2. The first item in FOREACH statement contains reference to the same input more than once.

For example, the following script will be affected:
a = load '11' using org.apache.hadoop.zebra.pig.TableLoader('a0');
b = foreach a generate a0+a0;