datameer v4 map-side join

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Saurabh Agashe

• April 16, 2015 19:17

Hi,

I'm joining a large dataset with a small dataset. To leverage map-side join, do I have to keep the small dataset on the left? Or will Datameer v4 figure out which dataset is smaller and do the needful?

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  Saurabh Agashe

  • April 16, 2015 19:17

  Datameer will take care of the join logic automatically in the back-end. When the logic is compiled into Hadoop jobs, Datameer will optimize the join for you.

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