What does this console message mean in Google App Engine

Question

I use Google App Engine NDB with a lot of asynchronous operations and gives. The console shows me this message:

tasklets.py:119] all_pending: clear set ([Future 106470190, created sending (webapp2.py►70) for the message about the task (sync.pyhaps87); claimed])

Is this some kind of warning? Should I ignore it? This does not cause any unusual behavior.

(sync.py is one of my files, but other things are not mine)

Answer 1

This happens if you perform asynchronous operations before you enter the ndb.toplevel function.

I assume this warns you that theses of asynchronous operations will not be expected at the end of the request. This can be a problem if you expected them to be included in your toplevel function, and they would be carts waiting for the operation to complete before executing a few more.