[infinispan-dev] staggered_get Question

[Erik Salter]

- my boss and others.

Why not proximate?  I may only want to get data from the same machine/site
and retry if necessary. 

Erik

-----Original Message-----
From: infinispan-dev-bounces at lists.jboss.org
[mailto:infinispan-dev-bounces at lists.jboss.org] On Behalf Of Mircea Markus
Sent: Friday, July 12, 2013 11:56 AM
To: Hammad Said; infinispan -Dev List
Cc: Bryan Perrotti (bperrott); Erik Salter (esalter); Michael Walker; Balaji
Rajam
Subject: Re: [infinispan-dev] staggered_get Question


On 12 Jul 2013, at 18:22, Mircea Markus <mmarkus at redhat.com> wrote:

> (Adding -dev)
> 
> On 12 Jul 2013, at 05:04, Hammad Said <hsaid at redhat.com> wrote:
> 
>> I have implemented the change for address ordering in and created the
topic branch optimize_staggered-get in:
>> https://github.com/hsaid4327/infinispan.git
> 
> which branch do you want me to look at?
> Or better can you please issue a pull request with your change?
> 
>> 
>> The next part is the configuration change. For the configuration change,
there are certain design decisions that need to be made:
>> a) We need to introduce two configuration params staggered_get_flag and
staggered_get_timeout. Where exactly are these params specified in the cache
configuration file. At the global or the cache level and under what element.
Are they be implemented as attributes of clustering element, separate
element as a child of clustering or cache. 
> 
> What about something like:
> <cluseter>
>  <remoteReads policy="ALL|STAGGER|MAIN_OWNER" staggerTimeout="50"/>

to clarify there are 3 ways of doing remote reads: all owners (like we
currently do), staggered (as discussed) and only to the main owner.

> </cluster>
> 
> What others think?
> 
>> b) once we read the properties second big question is how to pass them on
to the dispatcher in question i.e CommandAwareRpcDispatacher. There are two
choices here:
>>  1- We change the method signature of invokeRemoteCommands and pass on
these two params. This choice involves making up the calling stack in the
classes that invoke this method  namele JGroupsTransport and possible up the
calling stream. 
>> 2- Another option is to set it on the ResponseFilter which is passed to
CommandAwareRpcDispatcher.
> 
> I'm not sure the CARD needs to be aware of the staggering. I'd think it is
the responsibility of the caller (DistributionInterceptor) to orchestrate
staggering..
> 
>> 
>> Also, would the changes in configuration would require making a change in
XSD schema file?
>> 
>> Thanks!
>> Hammad
>> 
>> 
>> `
> 
> Cheers,
> -- 
> Mircea Markus
> Infinispan lead (www.infinispan.org)
> 
> 
> 
> 

Cheers,
-- 
Mircea Markus
Infinispan lead (www.infinispan.org)





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