Pig Diagnostic Operators
Dump Operator
grunt> Dump Relation_Name
grunt> student = LOAD 'hdfs://localhost:9000/pig_data/student_data.txt' USING PigStorage(',')
as ( id:int, firstname:chararray, lastname:chararray, phone:chararray, city:chararray );
grunt> Dump student
Describe Operator
grunt> Describe Relation_name
grunt> describe student;
Explain Operator
grunt> explain Relation_name;
grunt> explain student;
Illustrate Operator
grunt> illustrate Relation_name;
grunt> illustrate student;