parallel execution

I've been using the parallel execution nodes (Parallel chunk start, parallel chunk end), but today I started getting errors that the execution cannot remove connection

ERROR Parallel Chunk End   4:96:0:95:0:120 Execute failed: Cannot remove connection!

All the chunks worked, so this comes somehow as the final Parallel Chunk End is collecting the data from them.

This happens on when it is running on the KNIME Server and also on the desktop. it also happens when the number of chunks are determined automatically and when they are set manually.

I can' t find anything that is wrong. Has anyone any experience who can help?



Hi David,

Have you been able to execute the same workflow before without any errors?

Is your Parallel Chunk by any chance inside a wrapped metanode? If yes, please try to unwrap it and let me know if that helps.