Multiple workflows need to be completed before the next task

[mlauber71]

You could wait for a file to have changed on the disk

Start a Workflow, e. g. a database query, after a certain time

You could absolutely combine the approaches, I would think. Thank you @kienerj for pointing to this feature. Another interesting function could be this component by @gab1one that would wait for a file to change. In order to bring this into a ‘looping system’ - some changes might be necessary. In my example I tried to do a small such system with generic KNIME nodes.

The easiest way might be to just call all the workflows you want to finish before you continue.

Call sub workflow from a main KNIME workflow – mlauber71

An approach I employ on a regular basis on a big data system where there might be several dependencies is to execute a workflow via the knime server every hour (or so) and check which tasks have been finished and which databases are ready (wi
This new data) and then execute the following tasks. If nothing is there to do the job will rest after a few seconds. This makes for a quite robust setting if you continue to add tasks in a fast developing environment (dependencies over the whole system are hard to track so each sub task has to make sure on its own that it is fit to run).