[PIG-2238] Pig 0.9 error message not useful as compared to 0.8

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.0
• Fix Version/s: 0.9.1
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Vivek Padmanabhan
• Created: 25/Aug/11 04:44
• Updated: 05/Oct/11 17:20
• Resolved: 22/Sep/11 17:26

Description

The below is my faulty script (note the usage of alias F) for which Pig 0.9 composes not so useful message as compared to 0.8;

A = load 'input' using TextLoader as (doc:chararray) ;
B = foreach A generate flatten(TOKENIZE(doc)) as myword;
C = group B by myword parallel 30;
D = foreach C generate group,COUNT(B) as count,SIZE(group) as size;

E = order D by size parallel 5;
>F = limit F 20;
dump F;

For this script , error message in 0.9
>ERROR org.apache.pig.tools.grunt.Grunt - ERROR 2240: LogicalPlanVisitor can only visit logical plan

Error message in 0.8
>ERROR 1000: Error during parsing. Unrecognized alias F