[infinispan-dev] Integrating Karsten's FCS

[Galder Zamarreño]

On Jul 11, 2013, at 9:18 AM, Galder Zamarreño <galder at redhat.com> wrote:

> 
> On Jul 10, 2013, at 12:07 PM, Mircea Markus <mmarkus at redhat.com> wrote:
> 
>> 
>> On 9 Jul 2013, at 16:44, Sanne Grinovero <sanne at infinispan.org> wrote:
>> 
>>> I would agree with you that this should be a priority, but keep in
>>> mind that just migrating data from a CacheStore to another won't be
>>> enough: as I pointed out in my previous mail, binary encoding also
>>> changed, making it impossible to deserialize the values.
>> 
>> We should really see what has happened there Sanne, thanks for the heads up.
>> Ideally we should preserver backward compatibility for same store implementations, or if we don't document it and provide the tooling for allow users to upgrade. Galder something to look at together with the tooling for migrating data between FCS impls perhaps?
> 
> ^ That sounds very coarse grained to me.

s/coarse/fine

> This kind of upgrade from a cache store to another should be something we should cover in the rolling upgrades, and not as part of a cache store specific migration kit, thoughts?
> 
>> 
>> 
>>> 
>>> I'm not sure if the encoding change was meant to happen, but
>>> apparently there is currently no effort in place to test for this kind
>>> of backward compatibility.
>>> 
>>> If you need such a thing for ModeShape it would likely be easier for
>>> you to provide such a tool in ModeShape to extract all data and dump
>>> it to some external file, than to provide the hooks in Infinispan as
>>> the transcoding tool would need to depend on multiple Infinispan
>>> versions.
>> 
>> Cheers,
>> -- 
>> Mircea Markus
>> Infinispan lead (www.infinispan.org)
>> 
>> 
>> 
>> 
>> 
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> 
> 
> --
> Galder Zamarreño
> galder at redhat.com
> twitter.com/galderz
> 
> Project Lead, Escalante
> http://escalante.io
> 
> Engineer, Infinispan
> http://infinispan.org
> 
> 
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--
Galder Zamarreño
galder at redhat.com
twitter.com/galderz

Project Lead, Escalante
http://escalante.io

Engineer, Infinispan
http://infinispan.org