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?
Partition component divides the data into different partitions depending upon the key. Join component expect data to be in a ordered flow if "Input must be sorted" is checked. In this case join will not going fail but it will not give the correct output.
Key is always important in Join component else you many not get the desired result.In abinitio everything is key based if the key is wrong everything can go wrong but the graph will run successfully. sometime you many not get the result atall.
