What is the difference between Map-side join and Reduce-side join?

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Can someone tell me the difference between a Map-side join and Reduce-side join?
Dec 13, 2018 in Big Data Hadoop by slayer
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1 answer to this question.

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Join is a clause that combines the records of two tables. 

In Map-side join, all the task to join the records will be done by the mapper. This type of join is suitable for small sized tables.

In Reduce-side join, the join task will be done by the reducer. 

To know more differences, you can refer this link

answered Dec 13, 2018 by Omkar
• 69,040 points

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