[jacorb-developer] _non_existent call hangs

[KRISHNAMURTHY, Sriram (Sriram)]

Hello Nick

We were trying out a few things and had made the following changes to the jacorb.properties.

jacorb.connection.client.pending_reply_timeout=60000
jacorb.connection.client.idle_timeout=60000
jacorb.connection.request.write_timeout=30000
jacorb.connection.reply.write_timeout=30000	

With this the issue is not reproducible with the simulators. We are going to try the situation with real nodes and hopefully the above timeouts fixes the issue.

Can you also let us know if these timeouts are the ones you were thinking off should get us out of the problem?

Thanks
Sriram

-----Original Message-----
From: jacorb-developer-bounces~mksriram=alcatel-lucent.com at lists.spline.inf.fu-berlin.de [mailto:jacorb-developer-bounces~mksriram=alcatel-lucent.com at lists.spline.inf.fu-berlin.de] On Behalf Of Nick Cross
Sent: Monday, March 23, 2015 4:55 PM
To: Discussions concerning CORBA development with JacORB
Subject: Re: [jacorb-developer] _non_existent call hangs



Have you tried setting any timeouts ?

Thanks.

Nick

On 23/03/15 20:35, KRISHNAMURTHY, Sriram (Sriram) wrote:
> 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.
>
> Thanks
> Sriram
>
> -----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.c
> om 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?
>
> Thanks
>
> Nick
>
>
> 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 :10.120.234.80 masked entity ID: 10.120.234.80-ASYNC )=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.getEMSSes
>> sion(CorbaTmf814GmreSessions.java:259)
>>
>>
>>
>> Thanks
>> Sriram
>>
>>
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