You can use

n

:

n

partitioning with Joiner transformations with sorted or unsorted input. When you use

n

:

n

partitioning for a Joiner transformation, you create

n

partitions in the master and detail pipelines. When the Integration Service processes the join, it compares the rows in a detail partition against the rows in the corresponding master partition, ignoring rows in other master partitions. When processing master and detail data for outer joins, the Integration Service outputs unmatched master rows after it processes the partition for each detail cache.

To use

n

:

n

partitioning, you must create multiple partitions in the session and create a partition point at the Joiner transformation. You create the partition point at the Joiner transformation to create multiple partitions for both the master and detail source of the Joiner transformation.

If you create a partition point at the Joiner transformation, the Integration Service uses cache partitioning. It creates one memory cache for each partition. The memory cache for each partition contains only the rows needed by that partition. As a result, the Integration Service requires a portion of total cache memory for each partition.