Notebook delta table merge operation error: Cannot seek after EOF

Hi frithjof_v , Thanks for the suggestion. Yes, that's a good idea. I've implemented a table maintenance notebook that does this. However, it's difficult to determine when an optimize needs to happen. I had now done it when the last optimize was more than 7 days ago. however, sometimes I run into this issue less than a day after the previous time. So, do I need to schedule the table maintenance twice a day? That sounds like a lot of overhead and just not right. It's pretty frustrating to open the monitor every morning and find that jobs have failed again because of this issue...