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Introduction to Big Data · End Term · 13 Apr 2025 · January 2025 term · Set 1-2

Question 5: Consider a file “data.bin” which is formatted as follows:…

Question 5

+2 marksOne correct option

Consider a file “data.bin” which is formatted as follows: every data record has 10 key-value pairs of the format “key,value”, with each pair separated by a comma, where the “key” is the name of a field and the “value” is the value for that field in that record. Every data record occurs in its own line. You are asked to write a data processing script using Python that scales with big data. Which of the following represents your approach?

  1. A

    Since data.bin is compliant with the RFC 4180, use PySpark’s read_csv() to readthe data as is.

  2. B

    Rename the file data.bin to data.csv to make it compliant with RFC 4180 andthen use PySpark’s read_csv() to read the data

  3. C

    The problem cannot be solved since the file cannot be converted to a validformat for reading consistently without additional information

  4. D

    Write PySpark code to read all lines in data.bin, use string split on “,” asdelimiter, and then collect all column names and corresponding values into a RDD for further processing

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Correct answer

  • D

    Write PySpark code to read all lines in data.bin, use string split on “,” asdelimiter, and then collect all column names and corresponding values into a RDD for further processing

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Question 5 of 20 in the IIT Madras BS Introduction to Big Data (Intro to Big Data) End Term paper sat on 13 Apr 2025, in the January 2025 term (IIT M IMPROVEMENT FN EXAM QIM2 13 Apr). It carries 2 marks.

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