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Pinned topic Preserve Partition

‏2014-02-28T13:58:39Z |

Functionality of Preserve Partition SET is equivalent to explicitly specifying SAME partitioning. If I put Preserve Partition as SET in any upstream stage ex(Transformer, Join stage ), the downstream stages will use the SET partition of upstream or I can choose my partition on one stage and using SAME partition in the downstream stages.

What exactly would be the difference and which Scenario SET is advantageous over SAME. Which one is advisable using a preserve partition flag in the upstream or Same partition in downstream. Any specific scenario where Preserve partition is advantageous over Same? If both are same, What is the reason for IBM to create SET and SAME.