Effective in version 10.2.2, a streaming mapping must meet the following additional requirements if it contains a Joiner transformation:
A streaming mapping must have the Window transformation directly upstream from a Joiner transformation. Previously, you could use a Joiner transformation anywhere in the pipeline after a Window transformation.
A streaming mapping can have a single Joiner transformation. Previously, you could use multiple Joiner transformations in a streaming mapping.
A streaming mapping cannot contain an Aggregator transformation anywhere before a Joiner transformation in a streaming mapping. Previously, you could use an Aggregator transformation anywhere before a Joiner transformation in a streaming mapping.