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https://issues.apache.org/jira/browse/FLINK-4384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15418614#comment-15418614
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ASF GitHub Bot commented on FLINK-4384:
---------------------------------------
Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/2360#discussion_r74568505
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/rpc/akka/AsyncCallsTest.java
---
@@ -0,0 +1,178 @@
+/*
+ * 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.akka;
+
+import akka.actor.ActorSystem;
+import akka.util.Timeout;
+
+import org.apache.flink.runtime.akka.AkkaUtils;
+import org.apache.flink.runtime.rpc.RpcEndpoint;
+import org.apache.flink.runtime.rpc.RpcGateway;
+import org.apache.flink.runtime.rpc.RpcMethod;
+import org.apache.flink.runtime.rpc.RpcService;
+
+import org.junit.AfterClass;
+import org.junit.Test;
+
+import scala.concurrent.Await;
+import scala.concurrent.Future;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Callable;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.Assert.*;
+
+public class AsyncCallsTest {
+
+ //
------------------------------------------------------------------------
+ // shared test members
+ //
------------------------------------------------------------------------
+
+ private static ActorSystem actorSystem =
AkkaUtils.createDefaultActorSystem();
+
+ private static AkkaRpcService akkaRpcService =
+ new AkkaRpcService(actorSystem, new Timeout(10000,
TimeUnit.MILLISECONDS));
+
+ @AfterClass
+ public static void shutdown() {
+ akkaRpcService.stopService();
+ actorSystem.shutdown();
+ }
+
+
+ //
------------------------------------------------------------------------
+ // tests
+ //
------------------------------------------------------------------------
+
+ @Test
+ public void testScheduleWithNoDelay() throws Exception {
+
+ // to collect all the thread references
+ final BlockingQueue<Thread> queue = new LinkedBlockingQueue<>();
+
+ TestEndpoint testEndpoint = new TestEndpoint(akkaRpcService,
queue);
+ TestGateway gateway = testEndpoint.getSelf();
+
+ // a bunch of gateway calls
+ gateway.someCall();
+ gateway.anotherCall();
+ gateway.someCall();
+
+ // run something asynchronously
+ testEndpoint.runAsync(new Runnable() {
+ @Override
+ public void run() {
+ queue.add(Thread.currentThread());
+ }
+ });
+
+ Future<String> result = testEndpoint.callAsync(new
Callable<String>() {
+ @Override
+ public String call() throws Exception {
+ return "test";
--- End diff --
ah, true, this should queue its current thread. Will fix that.
> Add a "scheduleRunAsync()" feature to the RpcEndpoint
> -----------------------------------------------------
>
> Key: FLINK-4384
> URL: https://issues.apache.org/jira/browse/FLINK-4384
> Project: Flink
> Issue Type: Sub-task
> Components: Distributed Coordination
> Environment: FLIP-6 feature branch
> Reporter: Stephan Ewen
> Fix For: 1.2.0
>
>
> It is a common pattern to schedule a call to be executed in the future.
> Examples are
> - delays in retries
> - heartbeats,
> - checking for heartbeat timeouts
> I suggest to add a {{scheduleRunAsync()}} method to the {{RpcEndpoint}}.
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