[jacorb-developer] _non_existent call hangs

KRISHNAMURTHY, Sriram (Sriram) sriram.krishnamurthy at alcatel-lucent.com
Mon Mar 23 21:35:42 CET 2015

Hello Nick

We are using Jacorb 3.5. 

We have network elements to which we can interface via the tmf814 interface. One of the methods that we invoke on the network Element from the Management system is getEMSSession. This is the call that internally invokes the _non_existent and hangs.

The situation was re-created by rebooting the network element. So when the Query happens to the getEMSSession and if the node reboots at the same time, there seems to be a case of this method never returning. No exceptions are seen as well. The stack trace below was from the thread dump

Please let me know if you need any more details.


-----Original Message-----
From: jacorb-developer-bounces~sriram.krishnamurthy=alcatel-lucent.com at lists.spline.inf.fu-berlin.de [mailto:jacorb-developer-bounces~sriram.krishnamurthy=alcatel-lucent.com at lists.spline.inf.fu-berlin.de] On Behalf Of Nick Cross
Sent: Monday, March 23, 2015 12:19 PM
To: Discussions concerning CORBA development with JacORB
Subject: Re: [jacorb-developer] _non_existent call hangs

What version are you using? Can you provide a test case?



On 23/03/15 16:03, KRISHNAMURTHY, Sriram (Sriram) wrote:
> Hello
> While invoking a method on the Remote Object, I see that there is a _non_existent check.
> In cases where the remote node is abnormally terminated, I am seeing issues where the thread invoking _non_existent check doesn't return forever.
> Is this a known issue? Is there any attribute in the jacorb.properties that would fix this issue?
> The stack trace goes like below.
> Thread[PollerWorker [1],10,ServerService ThreadGroup]:{MaskedEntityId ( entity ID : masked entity ID: )=1}
>                   at java.lang.Object.wait(Native Method)
>                   at org.jacorb.orb.giop.ReplyPlaceholder.getInputStream(ReplyPlaceholder.java:107)
>                   at org.jacorb.orb.ReplyReceiver.getReply(ReplyReceiver.java:388)
>                   at org.jacorb.orb.Delegate._invoke_internal(Delegate.java:1475)
>                   at org.jacorb.orb.Delegate.invoke_internal(Delegate.java:1244)
>                   at org.jacorb.orb.Delegate.invoke(Delegate.java:1232)
>                   at org.jacorb.orb.Delegate.invokeBuiltin(Delegate.java:2275)
>                   at org.jacorb.orb.Delegate.non_existent(Delegate.java:2223)
>                   at org.omg.CORBA.portable.ObjectImpl._non_existent(ObjectImpl.java:61)
>                   at com.alu.nms.server.orb.imp.mediator.CorbaTmf814GmreSessions.getEMSSession(CorbaTmf814GmreSessions.java:259)
> Thanks
> Sriram
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