Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/2410#discussion_r76052891
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/rpc/heartbeat/HeartbeatSchedulerTest.java
---
@@ -0,0 +1,248 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.runtime.rpc.heartbeat;
+
+import akka.actor.ActorSystem;
+import akka.dispatch.Futures;
+import akka.util.Timeout;
+import org.apache.flink.runtime.akka.AkkaUtils;
+import org.apache.flink.runtime.rpc.RpcGateway;
+import org.apache.flink.runtime.rpc.RpcService;
+import org.apache.flink.runtime.rpc.RpcTimeout;
+import org.apache.flink.runtime.rpc.akka.AkkaRpcService;
+import org.apache.flink.util.TestLogger;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import scala.concurrent.Future;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.atMost;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.timeout;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * test for HeartbeatScheduler, including successful case, timeout
case(retry on backoff timeout), failure case(retry)
+ */
+public class HeartbeatSchedulerTest extends TestLogger {
+ private static final long INITIAL_INTERVAL = 200;
+ private static final long INITIAL_TIMEOUT = 20;
+ private static final long MAX_TIMEOUT = 150;
+ private static final long DELAY_ON_ERROR = 100;
+ private static final long MAX_ATTEMPT_TIME = 300;
+
+
+ private static ActorSystem actorSystem;
+ private static AkkaRpcService akkaRpcService;
+
+ private static final Timeout timeout = new Timeout(10000,
TimeUnit.MILLISECONDS);
+
+ @BeforeClass
+ public static void setup() throws Exception {
+ actorSystem = AkkaUtils.createDefaultActorSystem();
+
+ akkaRpcService = new AkkaRpcService(actorSystem, timeout);
+ }
+
+ @AfterClass
+ public static void teardown() throws Exception {
+ akkaRpcService.stopService();
--- End diff --
Do we really need an `AkkaRpcService` here? Can't it be a little bit more
lightweight without starting an `ActorSystem`. Maybe you could use the
`TestingRpcService`.
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