[infinispan-dev] Integrating Karsten's FCS

[Randall Hauch]

ModeShape does have a backup/restore feature that scans the whole contents of a repository to a file system, which later can be read back in to populate an empty installation. I'm just surprised that Infinispan doesn't provide or want to provide something like this out-of-the-box.

Also, is it just me, or does KFCS remind me of fried chicken? (Get it, KFCS … KFC Store … fried chicken. :-)


On Jul 9, 2013, at 8:44 AM, Sanne Grinovero <sanne at infinispan.org> wrote:

> Hi Randall,
> 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.
> 
> 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.
> 
> Sanne
> 
> 
> On 9 July 2013 14:37, Randall Hauch <rhauch at redhat.com> wrote:
>> 
>> On Jul 9, 2013, at 4:07 AM, Radim Vansa <rvansa at redhat.com> wrote:
>> 
>>> ----- Original Message -----
>>> | From: "Galder Zamarreño" <galder at redhat.com>
>>> | Shall we keep the current FCS implementation, deprecate it, and get rid of it
>>> | in the next minor/major version? Some users might have data stored in the
>>> | current FCS and would be quite abrupt to just get rid of it right now.
>>> 
>>> I'd remove it in Final, it cannot be seriously used either. Users can migrate the data using rolling upgrades.
>> 
>> Can you describe this process, especially for how it can be accomplished with a single (local) cache?
>> 
>> A migration mechanism is absolutely a must. There are ModeShape users that have used the FCS simply because it suits their needs - primarily because there are no extra dependencies and no additional "system" underneath. There HAS to be a migration path, especially if the old FCS is going to be removed.
>> 
>> Why does Infinispan not have a general-purpose mechanism for converting from one (offline) cache store to another (offline) cache store?
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