Step name

Name of the step; this name has to be unique in a single transformation

Temp directory

Specify the name of the directory where the system stores temporary files in case you want to combine more then the cached number of rows

TMP-file prefix

This is the prefix of the temporary files that will be generated

Max. cache size

The number of rows to cache before the system reads data from temporary files; required when you want to combine large row sets that do not fit into memory

Main step to read from

Specifies the step from which to read most of the data; while the data from other steps are cached or spooled to disk, the data from this step is not.

The Condition(s)

You can enter a complex condition to limit the number of output row.

Note: The fields in the condition must have unique names in each of the streams. Please see feature request PDI-16051 for more details.