[jira] [Commented] (FLINK-8623) ConnectionUtilsTest.testReturnLocalHostAddressUsingHeuristics unstable on Travis

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-8623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16652352#comment-16652352 ] 

ASF GitHub Bot commented on FLINK-8623:
---------------------------------------

zentol closed pull request #5449: [FLINK-8623] ConnectionUtilsTest.testReturnLocalHostAddressUsingHeuri…
URL: https://github.com/apache/flink/pull/5449
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/flink-runtime/src/test/java/org/apache/flink/runtime/net/ConnectionUtilsTest.java b/flink-runtime/src/test/java/org/apache/flink/runtime/net/ConnectionUtilsTest.java
index d7c4baae4d1..5ec3f443527 100644
--- a/flink-runtime/src/test/java/org/apache/flink/runtime/net/ConnectionUtilsTest.java
+++ b/flink-runtime/src/test/java/org/apache/flink/runtime/net/ConnectionUtilsTest.java
@@ -18,6 +18,7 @@
 
 package org.apache.flink.runtime.net;
 
+import org.junit.Assume;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mockito;
@@ -26,11 +27,13 @@
 import org.powermock.modules.junit4.PowerMockRunner;
 
 import java.io.IOException;
-import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.ServerSocket;
+import java.net.Socket;
+import java.net.SocketAddress;
 import java.net.UnknownHostException;
+import java.net.Inet4Address;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
@@ -53,13 +56,28 @@ public void testReturnLocalHostAddressUsingHeuristics() throws Exception {
 			final long start = System.nanoTime();
 			InetAddress add = ConnectionUtils.findConnectingAddress(unreachable, 2000, 400);
 
+			// we should have found a heuristic address
+			assertNotNull(add);
+
+			// make sure that the InetAddress.getLocalHost is not a loopback address
+			Assume.assumeFalse(InetAddress.getLocalHost().isLoopbackAddress());
+
+			// make sure the connection address is not a loopback address
+			Assume.assumeFalse(add.isLoopbackAddress());
+
+			Socket socket = new Socket();
+
+			SocketAddress socketAddress = new InetSocketAddress(add, 0);
+
+			socket.bind(socketAddress);
+
+			// check whether can bind to this address
+			assertTrue(socket.isBound());
+
 			// check that it did not take forever (max 30 seconds)
 			// this check can unfortunately not be too tight, or it will be flaky on some CI infrastructure
 			assertTrue(System.nanoTime() - start < 30_000_000_000L);
 
-			// we should have found a heuristic address
-			assertNotNull(add);
-
 			// make sure that we returned the InetAddress.getLocalHost as a heuristic
 			assertEquals(InetAddress.getLocalHost(), add);
 		}


 

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> ConnectionUtilsTest.testReturnLocalHostAddressUsingHeuristics unstable on Travis
> --------------------------------------------------------------------------------
>
>                 Key: FLINK-8623
>                 URL: https://issues.apache.org/jira/browse/FLINK-8623
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.5.0
>            Reporter: Till Rohrmann
>            Priority: Critical
>              Labels: test-stability
>
> {{ConnectionUtilsTest.testReturnLocalHostAddressUsingHeuristics}} fails on Travis: https://travis-ci.org/apache/flink/jobs/339344442



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