ServiceAccount: types.NamespacedName{
			Namespace: "ns",
			Name:      "sa",
		},
		Node: "node",
	}
	k2 := SaNode{
		ServiceAccount: types.NamespacedName{
			Namespace: "ns",
			Name:      "sa2",
		},
		Node: "node",
	}
	assert.Equal(t, index.Lookup(k1), nil)
	assert.Equal(t, index.Lookup(k2), nil)
	pod1 := &corev1.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "pod",
			Namespace: "ns",
		},

			expect:    false,
		},
		{
			name:      "added new sa",
			shardKey:  c1Key,
			endpoints: append(cluster1Endppoints, &IstioEndpoint{Address: "10.172.0.3", ServiceAccount: "sa2"}),
			expect:    true,
		},
		{
			name:     "updated endpoints address",
			shardKey: c1Key,
			endpoints: []*IstioEndpoint{
				{Address: "10.172.0.5", ServiceAccount: "sa1"},