[GitHub] [activemq-artemis] clebertsuconic commented on a change in pull request #2726: ARTEMIS-2392 Enable remove on cancel policy for scheduled pool

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clebertsuconic commented on a change in pull request #2726: ARTEMIS-2392 Enable remove on cancel policy for scheduled pool
URL: https://github.com/apache/activemq-artemis/pull/2726#discussion_r305424865
 
 

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 File path: artemis-server/src/test/java/org/apache/activemq/artemis/core/server/impl/ActiveMQServerImplTest.java
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 @@ -0,0 +1,70 @@
+/*
+ * 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.activemq.artemis.core.server.impl;
+
+import java.lang.ref.WeakReference;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.activemq.artemis.core.server.ActiveMQServer;
+import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ActiveMQServerImplTest extends ActiveMQTestBase {
+
+   @Test
+   public void testScheduledPoolGC() throws Exception {
+      ActiveMQServer server = createServer(false);
+
+      server.start();
+
+      WeakReference<Runnable> scheduledRunnableRef;
+      {
+         Runnable scheduledRunnable = new Runnable() {
+            @Override
+            public void run() {
+               Assert.fail();
+            }
+         };
+         scheduledRunnableRef = new WeakReference<>(scheduledRunnable);
+
+         ScheduledExecutorService scheduledPool = server.getScheduledPool();
+         ScheduledFuture scheduledFuture = scheduledPool.schedule(scheduledRunnable, 5000, TimeUnit.MILLISECONDS);
+
+         Assert.assertFalse(scheduledFuture.isCancelled());
+         Assert.assertTrue(scheduledFuture.cancel(true));
+         Assert.assertTrue(scheduledFuture.isCancelled());
+
+         Assert.assertNotEquals(null, scheduledRunnableRef.get());
+      }
+
+      long timeout = System.currentTimeMillis() + 5000;
+
+      while (timeout > System.currentTimeMillis() && scheduledRunnableRef.get() != null) {
+         System.gc();
 
 Review comment:
   We have a call on the ActiveMQTestBAse:: forceGC

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