If the session uses one flat file in the master pipeline and multiple flat files in the detail pipeline, use one partition for the master source and

n

partitions for the detail file sources (1:

n

). Add a pass-through partition point at the detail Source Qualifier transformation. Do not add a partition point at the Joiner transformation. The Integration Service maintains the sort order when you create one partition for the master source because it does not redistribute sorted data among partitions.

When you have multiple files in the detail pipeline that have the same structure, use the following guidelines to pass the files to the Joiner transformation:

When you sort file data with 1:

n

partitioning, the Joiner transformation might output unsorted data based on the join type. If you use a full outer or detail outer join, the Integration Service processes unmatched master rows last, which can result in unsorted data.

The following image shows sorted file data joined with 1:n partitioning: