Re: [jgroups-dev] Need information about Jgroup communication in jgroups 2.6.5

Hi Bela,

We are trying with 2.6.13 version for now. Hoping our issue will get resolve with that.

About API we have used and that are changed:
Our requirement was having cross core/subnet communication[whole subnet as a single jgroups cluster] using jgroups. As it was not supported in 2.6.5 version. So we have written a new protocol over PING, i.e SNPING. This class override some of the functionalities of PING to enable cross subnet communication.

As I was seeing some changes in PING class in version 2.8.1 e.g. sendGetMembersRequest function. I tried updating SNPING with 2.8.1. However no luck in cross subnet communication.


Our issue:
1. When network is fine both subnet is working correctly.
2. When route between is disabled between these two subnet. New view is getting installed on one core quickly[I think due to jgroups coordinator] however other core is taking too much time for new updated view. Getting mostly SUSPECT message.
3. When route is enabled between subnet, views are not getting merged correctly causing system to be in incorrect state.

Thinking of using RELAY protocol. Few questions:
1. Not able to find enough example and tcp.xml configuration details for cross subnet communication?
2. Read that application can't transfer own header? Is it correct. Because we have defined some headers of our own.
3. In this two subnet will be in different jgroup cluster and bridge cluster will join this two subnet. Is this understanding correct?
4. How to define tcp.xml configuration of other subnet? Means all host information of other subnet or both subnet.

Please let us know your thoughts/suggestion or pointers would help us in this cases.

Thanks a lot.
Ashish Giri


-----Original Message-----
From: Bela Ban [mailto:[email protected]] 
Sent: Tuesday, February 15, 2011 9:55 PM
To: Ashish Giri
Cc: [email protected]
Subject: Re: [jgroups-dev] Need information about Jgroup communication in jgroups 2.6.5



On 2/15/11 3:54 PM, Ashish Giri wrote:
> Hi Bela,
>
> Thanks for your kind support.
>
> However I have some more question.
> I was searching for this and found http://olex.openlogic.com/packages/jgroups/2.6.7.GA#package_detail_tabs
> Which shows it contains fix around this in 2.6.13 GA.


2.6.13 contains a backport of UNICAST2 from 2.7, yes. I thought though 
that your issue was asymmetric merges ? That functionality is only in 
later versions.


> Note: I have tried using 2.8 version with our application. However I see some API incompatible issues.

Which ones ?

-- 
Bela Ban
Lead JGroups / Clustering Team
JBoss


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