hi
After I deployed the pxc cluster, I found that the operator pod kept repeating the following log content uninterruptedly. What is the reason for this?
It should be noted that the two log contents provided below belong to two problems
The previous log exists in both k8s v1.17 and v1.20.4
The following log exists in k8s v1.20.4

 
【k8s v1.17 and v1.20.4】
2021-08-25T16:32:28+08:00 {"level":"info","ts":1629880348.4686058,"caller":"zapr/zapr.go:69","msg":"reconcile replication error","err":"get primary pxc pod: not found"}
 
 
【k8s v1.20.4】
2021-08-25T15:46:10+08:00 {"level":"error","ts":1629877570.0634503,"caller":"zapr/zapr.go:128","msg":"Update status","error":"send update: Operation cannot be fulfilled on perconaxtradbclusters.pxc.percona.com \"itd-demo-db\": StorageError: invalid object, Code: 4, Key: /registry/pxc.percona.com/perconaxtradbclusters/pxc/itd-demo-db, ResourceVersion: 0, AdditionalErrorMsg: Precondition failed: UID in precondition: 47948afa-9213-4b4c-973f-e368bba2364e, UID in object meta: ","errorVerbose":"Operation cannot be fulfilled on perconaxtradbclusters.pxc.percona.com \"itd-demo-db\": StorageError: invalid object, Code: 4, Key: /registry/pxc.percona.com/perconaxtradbclusters/pxc/itd-demo-db, ResourceVersion: 0, AdditionalErrorMsg: Precondition failed: UID in precondition: 47948afa-9213-4b4c-973f-e368bba2364e, UID in object meta: \nsend update\ngithub.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc.(*ReconcilePerconaXtraDBCluster).writeStatus\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc/status.go:133\ngithub.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc.(*ReconcilePerconaXtraDBCluster).updateStatus\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc/status.go:123\ngithub.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc.(*ReconcilePerconaXtraDBCluster).Reconcile.func1\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc/controller.go:225\ngithub.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc.(*ReconcilePerconaXtraDBCluster).Reconcile\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc/controller.go:270\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:235\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:209\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:188\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:155\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:156\nk8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\nk8s.io/apimachinery/pkg/util/wait.Until\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:90\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1371","stacktrace":"github.com/go-logr/zapr.(*zapLogger).Error\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/github.com/go-logr/zapr/zapr.go:128\ngithub.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc.(*ReconcilePerconaXtraDBCluster).Reconcile.func1\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc/controller.go:227\ngithub.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc.(*ReconcilePerconaXtraDBCluster).Reconcile\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/pkg/controller/pxc/controller.go:270\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:235\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:209\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:188\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:155\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:156\nk8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\nk8s.io/apimachinery/pkg/util/wait.Until\n\t/go/src/github.com/percona/percona-xtradb-cluster-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:90"}