Let me quickly check with people here to see what could happen. Agree with you that this does not seem right.  ... View more

Yeah, this is important. I created an internal jira to track it. If this is a common issue, will create an upstream jira and post fix, thanks! ... View more

Thanks for reporting the issue. Answers are embedded in.     1) was this running a background task to copy the MOB data when the snapshot was cloned and I just deleted the source before the copy was complete?   As far as I know, there is no data copy invovled during snapshot process, it uses references.   - or   2) when running "snapshot and clone" it just references the source MOB data until a cell write occurs?   Yeah, it always reference the source mob data file. when new cell write happens, it will be in the memstore (not flushed into the files yet), so the snapshot is not affected in this case.   - or     3) snapshot and clone just doesn't support MOB?  I think it is supported. Let me verify and come back. It maybe there is an issue with cleanser and it cleans up these mob files which is not supposed to clean up.   ... View more