Re: [Katta-developer] custom content server question

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Thanks once again for the response.  One more question (for now) how do I 
programatically  add an index to Katta? I see the command line method in 
documents, but I would like to do it from inside my application.

Respectfully,
Jim Taber
972-205-6382

From:
Johannes Zillmann <jzi...@go...>
To:
kat...@li...
Date:
04/18/2011 02:10 AM
Subject:
Re: [Katta-developer] custom content server question

Hi Jim,

On Apr 15, 2011, at 5:48 PM, James E Taber wrote:

> Thank you for the answer. 
> 
> given the newness of this to me, I just want to make sure of something.  
When I build a custom content server and implement the ILuceneServer, when 
I run ./bin/katta addNode -c foo.bar.Class, does katta actually create an 
instance of the class?   Such that I can start my content creation and 
management threads from the constructor and interact with other custom 
classes when the search() method is called via RPC.
> 
../katta/bin/katta startNode -c foo.bar.Class, yes.
And you probably need a custom client as well. See LuceneClient, 
SleepClient or MapFileClient as example!

Johannes

> 
> Respectfully,
> Jim Taber
> 972-205-6382 
> 
> 
> From:          Johannes Zillmann <jzi...@go...>
> To:            kat...@li...
> Date:          04/12/2011 01:58 AM
> Subject:               Re: [Katta-developer] custom content server 
question
> 
> 
> 
> 
> Hey Jim,
> 
> the master isn't really involved in the queries.
> The client looks up the index/shard-to-node mappings in zookeeper and 
communicated directly with the nodes.
> Currently katta uses hadoop rpc for the node-communication. Have a look 
at the LuceneServer and LuceneClient classes.
> The LuceneClient uses the (Katta)Client to communicate with the 
LuceneServer. It justs calls the LuceneServer methods with method name, 
parameters, etc similar to reflection api, see 
Client#broadcastToIndices().
> The LuceneServer implements there for VersionedProtocol and so all it 
public methods are available for the rpc-communication!
> 
> HTH
> Johannes
> 
> 
> 
> 
> On Apr 11, 2011, at 8:15 PM, James E Taber wrote:
> 
> > Community, 
> > 
> > Very much a newbie here so my questions will likely be phrased 
incorrectly - 
> > 
> > I am trying to interface to a larger cloud project which uses Katta. 
My issue is that I am not simply exposing an index.   I need to "capture" 
queries being made to a Katta master node at which point I can reach out 
to my Solandra instance and do the work on my side and return the results 
back.  And I do not understand how an query coming into a Katta master 
node is distributed to other nodes.  Which may not even be how Katta 
works. 
> > 
> > I built a Custom content server and registered the node to the Katta 
master, but when I re-run the query from the quick-start guide I do not 
see the logging messages from my content server. 
> > 
> > Can what I need to do be done or do I need to take a different 
approach and if I do need to take a different approach, any suggestions. 
> > 
> > 
> > Respectfully,
> > Jim Taber
> > 
972-205-6382------------------------------------------------------------------------------
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