Could removed the samples quickly(less than 5 mins) when set samples operator to Removed meantime processing is true. Test the scenario in 4.3.0-0.nightly-2020-03-09-200240 cluster.
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-2020:0858