I have been using KNIME 4.3 for a few weeks now and I’ve noticed an unfortunate trend. When I’ve had KNIME open for a few hours or so it will stop allowing me to save my workflow.
In most cases I have been able to create a new workflow and move all my nodes over, but this problem is also breaking other nodes in my workflows which prevents me from successfully executing them.
I get this error when trying to save workflows and a similar one when trying to execute nodes.
I am not using hadoop nor do I have it configured so I’m not certain what’s happening here.
Usually closing and re-starting KNIME will fix the problem, but it has extremely problematic for me. Any suggestions on mitigation are greatly appreciated!
Sorry about this, it sounds like it’s very frustrating! Let me try to get some additional eyes on the problem internally, and someone to followup with you here.
Apart from that, is it possible that there’s a process on your system that is automatically cleaning up your temp folder? (We’ve seen this pop up a couple of times before.)