fix minor things

pkg/cluster/types.go

@@ -1,12 +1,13 @@
 package cluster
 
 import (
+	"time"
+
 	acidv1 "github.com/zalando-incubator/postgres-operator/pkg/apis/acid.zalan.do/v1"
 	"k8s.io/api/apps/v1beta1"
 	"k8s.io/api/core/v1"
 	policybeta1 "k8s.io/api/policy/v1beta1"
 	"k8s.io/apimachinery/pkg/types"
-	"time"
 )
 
 // PostgresRole describes role of the node
@@ -20,7 +21,7 @@ const (
 	Replica PostgresRole = "replica"
 )
 
-// PodEventType describe value of event type
+// PodEventType describes value of event type
 type PodEventType string
 
 // Possible values for the EventType

pkg/cluster/util.go

@@ -460,7 +460,7 @@ func (c *Cluster) setSpec(newSpec *acidv1.Postgresql) {
 	c.specMu.Unlock()
 }
 
-// GetSpec returns cluster.Postgresql
+// GetSpec returns a copy of the operator-side spec of a Postgres cluster in a thread-safe manner
 func (c *Cluster) GetSpec() (*acidv1.Postgresql, error) {
 	c.specMu.RLock()
 	defer c.specMu.RUnlock()