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What is CEIL() function in Apache Pig ?

  • CEIL() function is used to get the value of an expression rounded up to the nearest integer.
 Apache Pig celi

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grunt> CEIL(expression)


  • Ensure that we have a file named wikitechy_math.txt in the HDFS directory /pig_data/.
  • This file contains integer and floating point values are given below.


  • You have loaded this file into Pig with a relation named math_data is given below.
grunt> math_data = LOAD 'hdfs://localhost:9000/pig_data/wikitechy_math.txt' USING          PigStorage(',')
   as (data:float);
  • You compute the ceil values of the contents of the wilitechy_math.txt file using CEIL() function as given below.
grunt> ceil_data = foreach math_data generate (data), CEIL(data);
  • The above statement stores the result in the relation named ceil_data.


  • Now you can verify the contents of the relation using the Dump operator as given below.
grunt> Dump ceil_data;


  • The output shows that the result in the file ceil_data.

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