Yes, i did notice the exception when I run the app from the same
machine. However, when I run the app from different machines (one in
each machine), I don't see any exceptions*.
* Except for another scenario. I click on join to join the group. Then,
click on shutdown to leave the group, and then click on join again. When
I do that, I get an exception:
Jan 19, 2010 3:43:58 PM
com.sun.enterprise.ee.cms.impl.common.GroupManagementServiceImpl
reportJoinedAndReadyState
INFO: GMS:Reporting Joined and Ready state to group LMI
Jan 19, 2010 3:43:58 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
getMemberTokens
INFO: GMS View Change Received for group LMI : Members in view for
MASTER_CHANGE_EVENT(before change analysis) are :
1: MemberId: papagaio.isxinc.com, MemberType: CORE, Address:
urn:jxta:uuid-59616261646162614A787461503250334E888D237E60470A8F22D217A5C5CBE803
Jan 19, 2010 3:43:58 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
newViewObserved
INFO: Analyzing new membership snapshot received as part of event :
MASTER_CHANGE_EVENT for Member: papagaio.isxinc.com of Group: LMI
Jan 19, 2010 3:43:58 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
addGroupLeadershipNotificationSignal
INFO: adding GroupLeadershipNotification signal leaderMember:
papagaio.isxinc.com of group: LMI
[LMI,papagaio.isxinc.com,class
com.sun.enterprise.ee.cms.impl.common.GroupLeadershipNotificationSignalImpl]
[papagaio.isxinc.com]
Jan 19, 2010 3:44:03 PM com.sun.enterprise.jxtamgmt.ClusterViewManager
addToView
WARNING: no changes from previous view, skipping notification of
listeners for cluster view event MASTER_CHANGE_EVENT from member:
papagaio.isxinc.com group: LMI
Jan 19, 2010 3:44:03 PM com.sun.enterprise.jxtamgmt.MasterNode
appointMasterNode
INFO: Assuming Master Node designation member:papagaio.isxinc.com for
group:LMI
Jan 19, 2010 3:44:03 PM com.sun.enterprise.jxtamgmt.HealthMonitor
reportJoinedAndReadyState
INFO: Calling reportMyState() with READY...
Jan 19, 2010 3:44:03 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
getMemberTokens
INFO: GMS View Change Received for group LMI : Members in view for
JOINED_AND_READY_EVENT(before change analysis) are :
1: MemberId: papagaio.isxinc.com, MemberType: CORE, Address:
urn:jxta:uuid-59616261646162614A787461503250334E888D237E60470A8F22D217A5C5CBE803
Jan 19, 2010 3:44:03 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
newViewObserved
INFO: Analyzing new membership snapshot received as part of event :
JOINED_AND_READY_EVENT for Member: papagaio.isxinc.com of Group: LMI
Jan 19, 2010 3:44:03 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
addReadyMembers
INFO: Adding Joined And Ready member : papagaio.isxinc.com Group: :LMI
StartupState:INSTANCE_STARTUP
[LMI,papagaio.isxinc.com,class
com.sun.enterprise.ee.cms.impl.common.JoinedAndReadyNotificationSignalImpl]
Jan 19, 2010 3:44:06 PM com.sun.enterprise.ee.cms.impl.jxta.GMSContext leave
INFO: Leaving GMS group LMI with shutdown type set to InstanceShutdown
Exception in thread "MessageWindowThread:LMI" java.lang.NullPointerException
at
com.sun.enterprise.ee.cms.impl.jxta.MessageWindow.run(MessageWindow.java:86)
at java.lang.Thread.run(Thread.java:619)
Jan 19, 2010 3:44:08 PM
com.sun.enterprise.ee.cms.impl.common.GroupManagementServiceImpl
reportJoinedAndReadyState
INFO: GMS:Reporting Joined and Ready state to group LMI
java.lang.NullPointerException
at
com.sun.enterprise.ee.cms.impl.common.GroupManagementServiceImpl.reportJoinedAndReadyState(GroupManagementServiceImpl.java:433)
at
com.localmatters.shoal.ShoalSample$4.doInBackground(ShoalSample.java:135)
at javax.swing.SwingWorker$1.call(SwingWorker.java:274)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at javax.swing.SwingWorker.run(SwingWorker.java:313)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Jan 19, 2010 3:44:08 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
getMemberTokens
INFO: GMS View Change Received for group LMI : Members in view for
MASTER_CHANGE_EVENT(before change analysis) are :
1: MemberId: papagaio.isxinc.com, MemberType: CORE, Address:
urn:jxta:uuid-59616261646162614A787461503250334E888D237E60470A8F22D217A5C5CBE803
Jan 19, 2010 3:44:08 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
newViewObserved
INFO: Analyzing new membership snapshot received as part of event :
MASTER_CHANGE_EVENT for Member: papagaio.isxinc.com of Group: LMI
Jan 19, 2010 3:44:08 PM com.sun.enterprise.ee.cms.impl.jxta.ViewWindow
addGroupLeadershipNotificationSignal
INFO: adding GroupLeadershipNotification signal leaderMember:
papagaio.isxinc.com of group: LMI
Jan 19, 2010 3:44:13 PM com.sun.enterprise.jxtamgmt.ClusterViewManager
addToView
WARNING: no changes from previous view, skipping notification of
listeners for cluster view event MASTER_CHANGE_EVENT from member:
papagaio.isxinc.com group: LMI
Jan 19, 2010 3:44:13 PM com.sun.enterprise.jxtamgmt.MasterNode
appointMasterNode
INFO: Assuming Master Node designation member:papagaio.isxinc.com for
group:LMI
Shreedhar Ganapathy wrote:
> Daniel
> Do you see any Exceptions in your log when the message is sent ?
> I see an NPE when running two processes in a single machine (after
> appending System.currenTimeMillis() to help make the two process's
> server names unique.
> We will look into the NPE - just wanted to be sure you see the same
> issue as well or any others.
>
> Thanks
> Shreedhar
>
> Daniel H. Cavalcanti wrote:
>> Hi Shreedhar,
>>
>> I can share the sample code I wrote. It's a very simple app that
>> starts a gui, Then I have buttons that triggers events to join a
>> group, send messages, and the shutdown/leave the group.
>>
>> I attached it here but don't know if it gets posted in the list.
>>
>> I actually start the app on two different machines, and from the log I
>> see that the group sees the two nodes in the group.
>>
>> Ganapathy wrote:
>>> Hi Daniel
>>> Sorry for the delayed response.
>>> From the posted thread, it appears you are starting only one member
>>> in your group.
>>> Could you verify if that member has added the MessageActionFactory
>>> before messages are sent?
>>> Also, to receive messages sent by self, you need to add a property to
>>> the Properties object when you call GMSFactory.startGMSModule(...)
>>>
>>> The property is called "LOOPBACK" with value set to true.
>>> By default, messages sent by a member are not received by that same
>>> member unless the above property set to true.
>>>
>>> Could you also try running two instances of your app and verify your
>>> messaging sample?
>>>
>>> hth
>>> Shreedhar
>>>
>>>
>>> Daniel H. Cavalcanti wrote:
>>>> Hi, I posted an inquiry in the shoal mailing list and just don't get
>>>> any responses. Maybe someone here could help out.
>>>>
>>>> Here is the link on the entry I posted:
>>>> https://shoal.dev.java.net/servlets/ReadMsg?list=users&msgNo=490
>>>>
>>>> Basically, I can't get shoal to deliver messages to the peer group.
>>>> Can someone help?
>>>>
>>>> thanks,
>>>> Daniel.
>>>>
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>>>>
>>>
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