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https://issues.apache.org/jira/browse/GEODE-8664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17229389#comment-17229389
 ] 

ASF GitHub Bot commented on GEODE-8664:
---------------------------------------

moleske commented on a change in pull request #5725:
URL: https://github.com/apache/geode/pull/5725#discussion_r520744117



##########
File path: 
geode-core/src/test/java/org/apache/geode/distributed/internal/DistributionTest.java
##########
@@ -204,4 +207,30 @@ public void testSendToEmptyListIsRejected() throws 
Exception {
     distribution.send(emptyList, m);
     verify(membership, never()).send(any(), any());
   }
+
+  @Test
+  public void testExceptionNestedOnStartConfigError() throws Exception {
+    Throwable cause = new RuntimeException("Exception cause");
+    Throwable exception = new MembershipConfigurationException("Test 
exception", cause);
+    doThrow(exception).when(membership).start();
+    try {

Review comment:
       JUnit has 
[ExpectedException](https://junit.org/junit4/javadoc/4.12/org/junit/rules/ExpectedException.html)
 which I think works better than `try` `catch` statements.  There are some 
examples in the Geode code base if you want some inspiration




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> JGroups exception is not propagated
> -----------------------------------
>
>                 Key: GEODE-8664
>                 URL: https://issues.apache.org/jira/browse/GEODE-8664
>             Project: Geode
>          Issue Type: Bug
>          Components: membership, messaging
>    Affects Versions: 1.12.0, 1.13.0
>            Reporter: Mario Salazar de Torres
>            Assignee: Mario Salazar de Torres
>            Priority: Minor
>              Labels: pull-request-available
>         Attachments: GEODE-8664.patch
>
>
> *AS A* geode contributor
> *I WANT* exceptions thrown in DistributionImpl.start to be propagated
> *SO THAT* more information is provided while tackling issues.
>  
> ----
> *Additional information:*
> After looking at an issue while starting a locator having to do with 
> JGroupMessenger I noticed that exceptions from Membership.start are not 
> correctly propagated in DistributionImpl.start method.
> To ilustrate the problem I attach below the reported exception while starting 
> the locator:
>  
> {noformat}
> locator is exiting due to an exception
> org.apache.geode.GemFireConfigException: unable to create jgroups channel
> at 
> org.apache.geode.distributed.internal.DistributionImpl.start(DistributionImpl.java:184)
> at 
> org.apache.geode.distributed.internal.DistributionImpl.createDistribution(DistributionImpl.java:222)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.<init>(ClusterDistributionManager.java:464)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.<init>(ClusterDistributionManager.java:497)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.create(ClusterDistributionManager.java:326)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem.initialize(InternalDistributedSystem.java:779)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem.access$200(InternalDistributedSystem.java:135)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem$Builder.build(InternalDistributedSystem.java:3033)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem.connectInternal(InternalDistributedSystem.java:290)
> at 
> org.apache.geode.distributed.internal.InternalLocator.startDistributedSystem(InternalLocator.java:743)
> at 
> org.apache.geode.distributed.internal.InternalLocator.startLocator(InternalLocator.java:388)
> at 
> org.apache.geode.distributed.LocatorLauncher.start(LocatorLauncher.java:716)
> at org.apache.geode.distributed.LocatorLauncher.run(LocatorLauncher.java:623)
> at 
> org.apache.geode.distributed.LocatorLauncher.main(LocatorLauncher.java:217){noformat}
>  
> Thing is with that kind of information there's no way to know why the problem 
> is happening, so the idea would be to propagate the exceptions, so it looks 
> more like this:
> {noformat}
> locator is exiting due to an exception
> org.apache.geode.SystemConnectException: unable to create jgroups channel
> at 
> org.apache.geode.distributed.internal.DistributionImpl.start(DistributionImpl.java:186)
> at 
> org.apache.geode.distributed.internal.DistributionImpl.createDistribution(DistributionImpl.java:222)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.<init>(ClusterDistributionManager.java:464)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.<init>(ClusterDistributionManager.java:497)
> at 
> org.apache.geode.distributed.internal.ClusterDistributionManager.create(ClusterDistributionManager.java:326)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem.initialize(InternalDistributedSystem.java:779)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem.access$200(InternalDistributedSystem.java:135)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem$Builder.build(InternalDistributedSystem.java:3034)
> at 
> org.apache.geode.distributed.internal.InternalDistributedSystem.connectInternal(InternalDistributedSystem.java:290)
> at 
> org.apache.geode.distributed.internal.InternalLocator.startDistributedSystem(InternalLocator.java:743)
> at 
> org.apache.geode.distributed.internal.InternalLocator.startLocator(InternalLocator.java:388)
> at 
> org.apache.geode.distributed.LocatorLauncher.start(LocatorLauncher.java:716)
> at org.apache.geode.distributed.LocatorLauncher.run(LocatorLauncher.java:623)
> at org.apache.geode.distributed.LocatorLauncher.main(LocatorLauncher.java:217)
> Caused by: java.lang.Exception: failed to open a port in range 53-53
> at org.jgroups.protocols.UDP.createMulticastSocketWithBindPort(UDP.java:503)
> at org.jgroups.protocols.UDP.createSockets(UDP.java:348)
> at org.jgroups.protocols.UDP.start(UDP.java:266)
> at org.jgroups.stack.ProtocolStack.startStack(ProtocolStack.java:966)
> at org.jgroups.JChannel.startStack(JChannel.java:889)
> at org.jgroups.JChannel._preConnect(JChannel.java:553)
> at org.jgroups.JChannel.connect(JChannel.java:288)
> at org.jgroups.JChannel.connect(JChannel.java:279)
> at 
> org.apache.geode.distributed.internal.membership.gms.messenger.JGroupsMessenger.start(JGroupsMessenger.java:393)
> at 
> org.apache.geode.distributed.internal.membership.gms.Services.start(Services.java:203)
> at 
> org.apache.geode.distributed.internal.membership.gms.GMSMembership.start(GMSMembership.java:1853)
> at 
> org.apache.geode.distributed.internal.DistributionImpl.start(DistributionImpl.java:171)
> ... 13 more{noformat}



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