Hadoop InputFormat for Excel

StackOverflow https://stackoverflow.com/questions/21822501

  •  12-10-2022
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Question

I need to create a map-reducing program which reads an Excel file from HDFS and does some analysis on it. From there store the output in the format of excel file. I know that TextInputFormat is used to read a .txt file from HDFS but which method or which inputformat should I have to use?

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Solution

Generally, hadoop is overkill for this scenario, but some relevant solutions

  1. parse the file externally and convert to an hadoop compatible format

  2. read the complete file as a single record see this answer

  3. use two chained jobs. the 1st like in 2, reads the file in bulk, and emits each record as input for the next job.

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