If I have 2 files containing field file1(A,B,C) and file2(A,B,D), if we partition both the files on key A using partition by key and pass the output to join component, if the join key is (A,B) will it join or not and WHY?

Abhishek

• Feb 5th, 2013

Yes, this is going to work fine provided u do it as in-memory. Let me explain why, firstly whenever you are using the field A as a key, for the same data in the both the files, would definitely go int...

vss34

 Profile Answers by vss34 Questions by vss34

• Jul 16th, 2009

The partition key and join key do NOT have to be the exact same.  In order to join properly, you just have to make sure the records being compared are in the same partition.  So if the parti...

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