When you use a transformation as the preview point, the Spark engine might process the data preview job differently.
When you choose a transformation as the preview point, the Spark engine might not maintain the sorted order when you configure the
Maintain row order
property.
Rank transformation
When you choose a Rank transformation as the preview point for data preview on the Spark engine, row order is maintained.
Sorter transformation
To maintain sorted row order when you preview data with a Sorter transformation before the preview point in a mapping, configure preferences to show all rows.
From the
Window
menu, open
Preferences
.
Navigate to
Informatica
Run Configurations
Data Viewer
.
In the
Results
tab, find the
Rows
section and select
Show all rows
.
Transformations with multiple output groups
When you preview data using the Spark engine, you cannot use the following transformations as preview points when the transformations are configured with multiple output groups: