Which Data Structure is used in case of Map Reduce?

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I am working on Hadoop from last 5 months but I am wondering that which data structure Hadoop uses to store large datasets. Where can I find a detailed view of underlying data structures in Hadoop? or Can anyone explain me here?

Thanks in advance!
May 4, 2018 in Big Data Hadoop by Shubham
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1 answer to this question.

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In case of Hadoop, HDFS is used as a storage platform and The underlying HDFS uses block as a storing units. HDFS does not care about what structure the files have. A MapReduce program simply gets the file data from HDFS as an input.

You can refer the below book to get a complete detailed information:

https://www.isical.ac.in/~acmsc/WBDA2015/slides/hg/Oreilly.Hadoop.The.Definitive.Guide.3rd.Edition.Jan.2012.pdf

Hope this will help you!

answered May 4, 2018 by nitinrawat895
• 10,670 points

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