How to reset and execute workflow automatically if...?

[mmrostami]

My workflow loop occasionally breaks during execution. Is there a way to automatically reset and rerun the workflow? I attempted using the Variable Condition Loop End node, but it still halted. Any suggestions?
I need this solution because, without it, I have to constantly monitor the workflow and manually reset and execute it whenever it stops.

[rfeigel]

Can you identify the reason for the run break?

[mmrostami]

The reason for the break is valid—some nodes are in beta version and typically work in a loop about 40 times before failing. To resolve this issue more effectively, I decided to reset and rerun the workflow.

[rfeigel]

Are the offending nodes KNIME nodes or nodes you’re developing? If the former, which one(s)? Are you sure you don’t have a data issue?

[mmrostami]

It’s the selenium nodes—there’s no data issue, and it works well, but after some time, it loses the connection.

[rfeigel]

Sorry, I certainly don’t have an answer for that. Try tagging the Selenium developers.

[mlauber71]

@mmrostami can you try and adapt this example where a process runs several times until success.

Put partially failing CSV Reader in a Loop Until Successful execution

@alfo19972 I created a sample workflow. The construct in fact is not as easy as I thought … [image] What goes into the Component is a Flow Variable with a Path “var_my_file” that would point to the CSV file. The configuration would allow to specify how often the machine should try to open the file. If something fails it would wait one second and then try again. [image] In order for the thing to work I have stored the results from the CSV in a temporary table that will be re-loaded at the …

Maybe wrap your loop around that. Also success can be a result actually written so it will not depend on possible problems with a node.

Try - Catch, Loop until a job is finished – mlauber71

Try - Catch, Recursive Loop to write a File to Google Sheets until success –...