Re: [Katta-developer] custom content server question
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From: Johannes Z. <jzi...@go...> - 2011-04-18 07:09:19
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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------------------------------------------------------------------------------ > > Xperia(TM) PLAY > > It's a major breakthrough. An authentic gaming > > smartphone on the nation's most reliable network. > > And it wants your games. > > http://p.sf.net/sfu/verizon-sfdev_______________________________________________ > > Katta-developer mailing list > > Kat...@li... > > https://lists.sourceforge.net/lists/listinfo/katta-developer > > > ------------------------------------------------------------------------------ > Forrester Wave Report - Recovery time is now measured in hours and minutes > not days. Key insights are discussed in the 2010 Forrester Wave Report as > part of an in-depth evaluation of disaster recovery service providers. > Forrester found the best-in-class provider in terms of services and vision. > Read this report now! http://p.sf.net/sfu/ibm-webcastpromo > _______________________________________________ > Katta-developer mailing list > Kat...@li... > https://lists.sourceforge.net/lists/listinfo/katta-developer > > > ------------------------------------------------------------------------------ > Benefiting from Server Virtualization: Beyond Initial Workload > Consolidation -- Increasing the use of server virtualization is a top > priority.Virtualization can reduce costs, simplify management, and improve > application availability and disaster protection. Learn more about boosting > the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev_______________________________________________ > Katta-developer mailing list > Kat...@li... > https://lists.sourceforge.net/lists/listinfo/katta-developer |