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From "Angel, Eric" <>
Subject RE: Distributed Lucene Questions
Date Tue, 02 Jun 2009 00:11:25 GMT
Has anyone used Katta in production?  It looks very interesting and
feature-rich, but I'm wondering how stable it is and whether or not it
can support fine-grained queries - for example, constant score queries,
MultiSearcher, etc.

-----Original Message-----
From: Ken Krugler [] 
Sent: Monday, June 01, 2009 11:05 AM
Subject: Re: Distributed Lucene Questions

>Hi All,
>I am trying to build a distributed system to build and serve lucene
>I came across the Distributed Lucene project-
>and have a couple of questions. It will be really helpful if someone
>provide some insights.
>1) Is this code production ready?
>2) Does someone has performance data for this project?
>3) It allows searches and updates/deletes to be performed at the same
>How well the system will perform if there are frequent updates to the
>system. Will it handle the search and update load easily or will it be
>better to rebuild or update the indexes on different machines and then
>deploy the indexes back to the machines that are serving the indexes?
>Basically I am trying to choose between the 2 approaches-
>1) Use Hadoop to build and/or update Lucene indexes and then deploy
them on
>separate cluster that will take care or load balancing, fault tolerance
>There is a package in Hadoop contrib that does this, so I can use that
>2) Use and/or modify the Distributed Lucene code.
>I am expecting daily updates to our index so I am not sure if
>Lucene code (which allows searches and updates on the same indexes)
will be
>able to handle search and update load efficiently.

I think you should take a look at Katta, as this is exactly the type 
of use case it's designed to handle.

Other people use the distributed search support inside of Nutch.

And Solr has distributed search support, though it's still pretty new.

-- Ken
Ken Krugler
+1 530-210-6378

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