Block this step until steps finish

This step simply waits until all the step copies that are specified in the dialog have finished.

You can use it to avoid the natural concurrency (parallelism) that exists between transformation step copies.

Note: When the buffers between the steps (hops) are full, this can lead to a Transformation Deadlock. A workaround is then to increase the "Nr of rows in rowset" (Settings→Miscellaneous) or use the "Blocking" step.

Options

Option

Description

Step name

Name of the step.

Note: This name has to be unique in a single transformation.

Watch the following steps

Use this grid to specify the steps to wait for.

Get steps

Push this button to auto-fill the "Watch the following steps" grid with all steps available in the transformation.

Watch the following steps grid

Use this grid to list the steps to wait for. The grid has the following columns:

Column	Description
Step name	The name of the step to wait for.
CopyNr	The (0-based) copy number of the step. If the named step has an explicit setting for "Change number of copies to start", and you want to wait for all copies to finish, you'll need to enter one row in the grid for each copy, and use this column to specify which copy of the step to wait for. For the default number of copies (1), the CopyNr is always 0.

Sample

See file:

samples/transformations/Block this step until steps finish - basic example.ktr