debug: debug

Signed-off-by: Gyu-Ho Lee <gyuhox@gmail.com>

integration/cluster_test.go

@@ -221,17 +221,23 @@ func TestAddMemberAfterClusterFullRotation(t *testing.T) {
 
 // Ensure we can remove a member then add a new one back immediately.
 func TestIssue2681(t *testing.T) {
+	now := time.Now()
+	fmt.Println("TestIssue2681 started!")
 	defer testutil.AfterTest(t)
 	c := NewCluster(t, 5)
 	c.Launch(t)
 	defer c.Terminate(t)
 
+	fmt.Println("TestIssue2681 1", time.Since(now))
 	c.RemoveMember(t, uint64(c.Members[4].s.ID()))
 	c.waitLeader(t, c.Members)
 
+	fmt.Println("TestIssue2681 2", time.Since(now))
 	c.AddMember(t)
 	c.waitLeader(t, c.Members)
 	clusterMustProgress(t, c.Members)
+
+	fmt.Println("TestIssue2681 3", time.Since(now))
 }
 
 // Ensure we can remove a member after a snapshot then add a new one back.