Pig Group Operator in Big Data Hadoop

The GROUP operator is used to group the data in one or more relations. It collects the data having the same key.

grunt> group_data = GROUP student_details by age;

grunt> Describe group_data;

grunt> Illustrate group_data;

Grouping by Multiple Columns

grunt> group_multiple = GROUP student_details by (age, city);

Group All

grunt> group_all = GROUP student_details All;

grunt> Dump group_all;