Right now the controller parses packages JSON and plans the action. The problem is that the planning phase is quite long, so the action stays in memory for a long time. This causes GC to mark the JSON as old, so this parameter will stay in memory for a long time causing memory fragmentation.
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-2017:2466