How to print data without brackets using PIG Dump?

+1 vote

I was trying to find the average marks per branch in any college. 

I ran below Pig transformation script.

grunt> student = LOAD "/user/cloudera/User/student_details.txt" USING PigStorage(",") AS (rollNo:int, name:charArray, branch:charArray, marks:int);
grunt> student_group_branch = GROUP student By branch;
grunt> AverageMarks = ForEach student_group_branch GENERATE (student.branch, AVG(student.marks));
grunt> dump AverageMarks;

The result of dump command is as below

(({( CSE),( CSE),( CSE)},913.6666666666666))
(({( Civil),( Civil)},999.5))
(({( ECE),( ECE)},994.5))
(({( EEE),( EEE)},943.0))
grunt>

However, I was looking for the output as below

CSE, 913.66
Civil, 999.5
ECE, 994.5
EEE, 943.0

Could you please help in getting the desired Output?

Dec 18, 2018 in Big Data Hadoop by slayer
• 29,170 points
121 views

1 answer to this question.

0 votes

Please refer to the below commands:

student = Load 'piginput' USING PigStorage(',') AS (rollNo:int, name:charArray, branch:charArray, marks:int);

groupstudent = group student by branch;

result = foreach groupstudent generate group, AVG(student.marks);

answered Dec 18, 2018 by Omkar
• 67,660 points

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