Indexing task doesn't start even though there are free slots available


I wonder why batch indexing job wont start even though there are free slots available:

Where should I look for the reason?



Nevermind, I’ve just figured out that the real-time task was not complete yet because of the window settings.

Sounds like you figured it out, but yeah, there is a locking mechanism in play that ensures that there aren’t multiple tasks trying to generate data for the same time interval. Once your real-time was done, it would’ve given up its lock and the batch should be let through.