Re: [jgroups-users] Ability to set the coordinator programaticaly and the ability to maintain a shared state

Hi Bobby,

Thanks a lot, I tried this method, so far it has been working perfectly.
But I faced an issue when it comes to handling merge views.  I was trying
to implement [1] in case of merge-view.  Can we guarantee that the view
changes always happen before the message?. if current coordinator sends
some message during a merge view,  from clients ent can I be sure that the
view change (merge view) will be received first.

[1]
http://www.jgroups.org/manual4/index.html#_the_primary_partition_approach

Thanks & Regards,
Tharindu


Tharindu Munasinghe.
Undergraduate, Department of Computer Science and Engineering
University of Moratuwa.
Contact no. +94770460887



On Sun, May 6, 2018 at 3:04 AM, Questions/problems related to using JGroups
<[email protected]> wrote:

> On Sat, May 5, 2018 at 5:24 PM, Questions/problems related to using
> JGroups <[email protected]> wrote:
>
>>
>>
>> On Sat, May 5, 2018 at 1:35 AM, Questions/problems related to using
>> JGroups <[email protected]> wrote:
>>
>>> Hi all,
>>>
>>> Thank very much @Bobby for your valuable answer. Your answer actually
>>> helps me to understand the usage of state transfer clearly.
>>>
>>> Just wanted to clarify a small thing. Did you mean that there is an
>>> inbuilt message saying "reload the shared state" in the library itself
>>> (similar to what happen when there is view change, the views get
>>> automatically pushed to all the members) or did you propose a method to
>>> fetch the latest state from the coordinator once the coordinator notifies
>>> the clients?.
>>>
>>
>> That last one. There actually might be something I don't know about, but
>> when the coordinator sees that something has changed it notifies everyone.
>>
>
> I should have been more specific: there might be something in jgroups to
> handle this, but in *my* app code we wrote the code to have the coordinator
> send the message, other nodes get it, etc.
>
> Bobby
>
>
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