tests: Recreate cluster for every failpoint trigger

This shortens operation history and avoids having to many failed requests.
Failed requests are problematic as too many of them can cause linearizability
verification complexity to become exponential.

Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>

tests/linearizability/linearizability_test.go

@@ -34,10 +34,6 @@ const (
 	minimalQPS = 100.0
 	// maximalQPS limits number of requests send to etcd to avoid linearizability analysis taking too long.
 	maximalQPS = 200.0
-	// failpointTriggersCount
-	failpointTriggersCount = 60
-	// waitBetweenFailpointTriggers
-	waitBetweenFailpointTriggers = time.Second
 )
 
 func TestLinearizability(t *testing.T) {
@@ -74,26 +70,28 @@ func TestLinearizability(t *testing.T) {
 		},
 	}
 	for _, tc := range tcs {
-		t.Run(tc.name, func(t *testing.T) {
-			failpoint := FailpointConfig{
-				failpoint:           tc.failpoint,
-				count:               failpointTriggersCount,
-				waitBetweenTriggers: waitBetweenFailpointTriggers,
-			}
-			traffic := trafficConfig{
-				minimalQPS:  minimalQPS,
-				maximalQPS:  maximalQPS,
-				clientCount: 8,
-				traffic:     DefaultTraffic,
-			}
-			clientId.Store(0)
-			requestId.Store(0)
-			testLinearizability(context.Background(), t, tc.config, failpoint, traffic)
-		})
+		for i := 0; i < 60; i++ {
+			t.Run(tc.name, func(t *testing.T) {
+				failpoint := FailpointConfig{
+					failpoint:           tc.failpoint,
+					count:               1,
+					waitBetweenTriggers: time.Second,
+				}
+				traffic := trafficConfig{
+					minimalQPS:  minimalQPS,
+					maximalQPS:  maximalQPS,
+					clientCount: 8,
+					traffic:     DefaultTraffic,
+				}
+				testLinearizability(context.Background(), t, tc.config, failpoint, traffic)
+			})
+		}
 	}
 }
 
 func testLinearizability(ctx context.Context, t *testing.T, config e2e.EtcdProcessClusterConfig, failpoint FailpointConfig, traffic trafficConfig) {
+	clientId.Store(0)
+	requestId.Store(0)
 	clus, err := e2e.NewEtcdProcessCluster(ctx, t, e2e.WithConfig(&config))
 	if err != nil {
 		t.Fatal(err)