Issue 1:
Events are helpful for traceability and system performance analysis. Long term storage of event data will be in a monitoring/storage backend of user's choice. Heapster is well suited for being an events proxy since it is built to handle multiple backends.

Issue 2:
Env: Kubernetes 1.3.3 on AWS

I ran into the same problem described into #26673 but now it's happening on every deploy.

I would have reopened the issue, but I was not the author so I could not.

The bug presents itself because I have a build that does kubectl rollout status deployment/application-unstable just after a kubectl apply -f <new deployment manifest> and it gets stuck forever because the rollout is never reported as finished (it does finish tho).

Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.615754 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.557964 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.509632 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.456868 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.409374 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.357072 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.306676 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.257030 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.206504 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.157741 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.112898 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.059652 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:27 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:27.007476 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.956218 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.910275 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.857240 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.806429 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.756885 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.706639 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.656417 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.607126 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.557562 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.506025 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.456588 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.422213 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.356907 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.313353 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.257953 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.209894 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.160954 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.107205 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.056387 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists
Jul 26 12:42:26 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:26.006022 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-worker-unstable: error creating replica set application-celery-worker-unstable: replicasets "application-celery-worker-unstable-3295993310" already exists
Jul 26 12:42:25 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:25.956830 17798 deployment_controller.go:400] Error syncing deployment default/application-unstable: error creating replica set application-unstable: replicasets "application-unstable-900752437" already exists
Jul 26 12:42:25 ip-x-x-x-x kube-controller-manager[17798]: E0726 12:42:25.906450 17798 deployment_controller.go:400] Error syncing deployment default/application-celery-unstable: error creating replica set application-celery-unstable: replicasets "application-celery-unstable-1891916216" already exists