When polling for events, the helper function in heatclient retrieves the stack to check its status. By default it gets the outputs at the same time, but we don't need it at this time, and can be somewhat costly on the server.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2017:1589