[infinispan-dev] Distributed queries

[Sanne Grinovero]

2009/9/17 Michael Neale <michael.neale at gmail.com>:
> I am still not entirely sure what I am asking, but look forward for
> your merged in changes (they are in another branch right now yes?).
>
> Yes I mean querying objects - I was under the impression that lucene
> was used for the indexing of the data to service these queries?

Sure, to clarify: there's work going on on two different aspects, which
complement each other in the ideal setup:

1) Be able to query a Lucene index (wherever you store that) to find objects
which are located inside Infinispan; this is about how to search them and how
to maintain the index in synch with Infinispan's content.

2) Store a Lucene index inside Infinispan, instead of, for example, filesystem.
In this case we're not concerned about what you index, the Lucene interface
is the usual one and you should be able to replace the Directory
implementation in existing applications.

So 1) is the branch you've found, and Navin is working on that, 2) is not yet
in subversion, the latest patch is attached to other thread by Łukasz,
and is to be applied
on Hibernate Search's trunk (and depends on Infinispan).

>
> On Wed, Sep 16, 2009 at 10:32 PM, Navin Surtani <nsurtani at redhat.com> wrote:
>>
>> On 16 Sep 2009, at 12:25, Michael Neale wrote:
>>
>>> oh ok nice - could you point me at which branch to try to find some
>>> tests to play with?
>>
>> If you're talking about Querying objects in Infinispan: -
>>
>> The eventual goal is to be able to have different configurations on
>> how you want to index your data. Manik has given me the 'OK' to push a
>> simple query interface for CR1 for Monday/Tuesday.
>>
>> I'm kind-of pressed with getting the code working for this and also
>> between moving house and lack of internet there I'll be a bit quiet.
>> However, I'll get a wiki up by the end of the week about how this all
>> works.
>>
>> However if you're not then I assume you're talking about using Lucene
>> to index into Infinispan?
>>
>>>
>>> On Wed, Sep 16, 2009 at 6:05 PM, Sanne Grinovero
>>> <sanne.grinovero at gmail.com> wrote:
>>>> 2009/9/16 Michael Neale <michael.neale at gmail.com>:
>>>>> regarding indexing and queries - is the current aim to not require
>>>>> that the index for the entire data grid exist on a single node?
>>>>>
>>>>> (asking as a potential user who is wrestling with lucene indexes at
>>>>> the moment is curious).
>>>>
>>>> Yes the concept is to store the Lucene index itself in the grid, so
>>>> it will
>>>> be distributed, and the segments you use most get cached locally.
>>>> At the moment you have to select only one node to write to the index,
>>>> but all other nodes should be able to read.
>>>> Feel free to test it as we are needing feedback.
>>>>
>>>>>
>>>>> --
>>>>> Michael D Neale
>>>>> home: www.michaelneale.net
>>>>> blog: michaelneale.blogspot.com
>>>>> _______________________________________________
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>>>>> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>>>>>
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>>>
>>>
>>>
>>> --
>>> Michael D Neale
>>> home: www.michaelneale.net
>>> blog: michaelneale.blogspot.com
>>> _______________________________________________
>>> infinispan-dev mailing list
>>> infinispan-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>>
>> Navin Surtani
>>
>> Intern Infinispan
>> Intern JBoss Cache Searchable
>>
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>
>
>
> --
> Michael D Neale
> home: www.michaelneale.net
> blog: michaelneale.blogspot.com
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