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From murali parimi <>
Subject Bucket map join - reducers role
Date Fri, 27 Feb 2015 13:32:36 GMT
Hello team,

I have two tables A and B. A has 360Million rows with one column K. B has around two billion
rows with multiple columns including K.

Both tables are clustered and sorted by K and Bucketed into same number of buckets.

When I perform a join, I assumed there won't be any reducers spawned as the join would happen
on map side. Still user fee reducers getting spawned. 

Any role for reducers here? Am I missing something?

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