[hibernate-dev] Configuration for Infinispan cache working as directory provider in HSearch

[Łukasz Moreń]

2009/8/20 Emmanuel Bernard <emmanuel at hibernate.org>

>
> On 18 août 09, at 17:35, Łukasz Moreń wrote:
>
> Now, every directory provider creates new Infinispan CacheManager - factory
> for caches. Each manager creates cache with defined name. Caches with this
> same name make distributed one, so we can have one common cache, cache per
> directory, depends how they are named - that way cache is shared. This is
> really not efficient since heavy CacheManager is created with every indexed
> entity -  ideally one per VM. The better idea I think is to share
> one CacheManager between all directories in node.
>
>
> OK
>
> Then shared are also caches objects locally - not like previously every
> time is created new one.
>
>
> I don't understand that sentence, can you detail a bit further.
>


If one CM is used per VM: cache with defined name is created, then if we
want to get cache with this same name, new one is not created, we get
reference to existing one. So if we set up one shared cache for all
directories, locally we work on this same object.
Before with CM per lucene directory always each CM created new cache - and
they made connection, so even from same VM, data was send over the
network:).



>
> HSearch started twice, independently, that both instances don't share
> resources - directories.? E.g. every time with different configuration?
>
>
> Yes, if you start HSearch twice, they should be totally independent (ie not
> share resources like CacheManager etc.
>
> To achieve that can be either created new CacheManager every HS start, or
> used one, but with different cache names per app.
>
>
> I like one CM per HS start but how do you think you can achieve that?
>

Actually I was thinking about one CM per app. Altough I think we can maybe
store CM's in some static Map and start HS every time with different
Infinispan setting: cluster name. Then cluster name could be a map's key.

>
>
>
> 2009/8/14 Emmanuel Bernard <emmanuel at hibernate.org>
>
>> How do you share the cache between different directories? A static field
>> would not work well as it would prevent HSearch to be started twice in a
>> single app.
>>
>> Anyway if we share the cache, I would still like to use the per directory
>> provider configuration strategy (from a config property point of view) and
>> raise an exception if it turns out the Infinispan cache config is different
>> between two different indexes. That way we can improve down the road.
>>
>> On 14 août 09, at 05:33, Łukasz Moreń wrote:
>>
>> There is one cache for all indexes. In this case scoping configuration
>> will be hard.Yes, some default config will be provided. Right, different
>> propterties for xml and programmatic would be better.
>>
>> 2009/8/14 Emmanuel Bernard <emmanuel at hibernate.org>
>>
>>> Question,
>>> Do we have one cache for all indexes (directories) or one per directory?
>>>
>>> I feels wrong to see this configuration not scoped per index
>>> hibernate.search.default.directory_provider
>>> blah.blah.InfinispanDirectoryProvider
>>> hibernate.search.default.infinispan_conf com.acme.CacheFactoryImpl
>>>
>>> hibernate.search.Address.directory_provider
>>> blah.blah.InfinispanDirectoryProvider
>>> hibernate.search.Address.infinispan_conf conf.xml
>>>
>>> hibernate.search.User.directory_provider
>>> blah.blah.InfinispanDirectoryProvider
>>> hibernate.search.User.infinispan_conf auto
>>>
>>> As Sanne pointed out, maybe we want different properties for XML,
>>> programmatic and built-in configs. I kinda like the idea of one config but
>>> it seems it will be hard to differenciate a class from a config file.
>>>
>>> Emmanuel
>>>
>>>
>>> On 13 août 09, at 18:33, Łukasz Moreń wrote:
>>>
>>>  I was thinking that maybe we can expose full conf options. Infinispan
>>>> supports programmatical and xml ways to configure cache.
>>>> To achieve first one, could be created some interface with factory
>>>> method that returns cache. User can implement that and create cache as he
>>>> wants.
>>>>
>>>> Something like that:
>>>>
>>>> <property name="hibernate.search.infinispan.conf"
>>>>  value="org.hibernate.search.store.infinispan.CacheFactoryImpl" />
>>>>
>>>> and for xml
>>>>
>>>> <property name="hibernate.search.infinispan.conf"  value="xml-conf.xml"
>>>> />
>>>>
>>>>
>>>> Exposing some configuration to infinispan makes sense. can you start a
>>>> thread explainig what is configurable and which one you think we should
>>>> expose to hsearch users. Ideally I would like to offer one or two defaut
>>>> config scenarios and allow to fallback to a custom config.
>>>>
>>>> Cheers,
>>>> Lukasz Moren
>>>> _______________________________________________
>>>> hibernate-dev mailing list
>>>> hibernate-dev at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>>>>
>>>
>>>
>>
>>
>
>
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