Already patched in 4.8.0: https://github.com/openshift/kubernetes/commit/57a3b0abd678c66a9a04e553b6d6ae49671a4779
Hence, not a blocker.
Requested backports to 4.6 and 4.7.
I have a PR up: https://github.com/openshift/kubernetes/pull/692
Patch is pending verification of https://bugzilla.redhat.com/show_bug.cgi?id=1939734 where this was initially reported.
Checked on 4.7.0-0.nightly-2021-05-12-004740, rebooted node multiple times.
I see the number of watch calls are low.
$ oc get clusterversion
NAME VERSION AVAILABLE PROGRESSING SINCE STATUS
version 4.7.0-0.nightly-2021-05-12-004740 True False 119m Cluster version is 4.7.0-0.nightly-2021-05-12-004740
$ oc get nodes
NAME STATUS ROLES AGE VERSION
ip-10-0-134-125.us-east-2.compute.internal Ready worker 136m v1.20.0+75370d3
ip-10-0-139-107.us-east-2.compute.internal Ready master 141m v1.20.0+75370d3
ip-10-0-182-213.us-east-2.compute.internal Ready worker 136m v1.20.0+75370d3
ip-10-0-187-71.us-east-2.compute.internal Ready master 145m v1.20.0+75370d3
ip-10-0-193-213.us-east-2.compute.internal Ready master 145m v1.20.0+75370d3
ip-10-0-194-243.us-east-2.compute.internal Ready worker 136m v1.20.0+75370d3
$ oc debug node/ip-10-0-139-107.us-east-2.compute.internal
Starting pod/ip-10-0-139-107us-east-2computeinternal-debug ...
sh-4.4# journalctl | grep -i "Starting reflector" | wc -l
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 (OpenShift Container Platform 4.7.11 bug fix update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.