"Are all the documents in the same search space? That is, for a given query, could any of the 10MM docs be returned?
If so, I don't think you need to worry about multicore. You may however need to put part of the index on various machines: http://wiki.apache.org/solr/DistributedSearch " I also try to make decision whether going with muticore or distributed search. My concern is as follow: Does that mean having a single big schema with lot of fields? Distributed Search requires that each document must have a unique key. In this case, the unique key cannot be a primary key of a table. I wonder how Solr performs in this case (distributed search vs. multicore) 1. Distributed Search a. All documents are in a single index. Indexing a single document would lock the index and affect query performance? b. If multi machines are used, Solr will need to query each machine and merge the result. This also could impact performance. C. Support MoreLikeThis query given a document id. 2. Multicore a. Each table will be associated with a single core. Indexing a single document would lock only a specific core index. Thus,quering documents on other cores won't be impacted. B. Querying documents across multicore must be handle by the caller. C. Can't support MoreLikeThis query since document id from one core has no meaning on other cores. -----Original Message----- From: Ryan McKinley [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2008 6:09 Joe To: solr-user@lucene.apache.org Subject: Re: abt Multicore Are all the documents in the same search space? That is, for a given query, could any of the 10MM docs be returned? If so, I don't think you need to worry about multicore. You may however need to put part of the index on various machines: http://wiki.apache.org/solr/DistributedSearch ryan On Nov 17, 2008, at 3:47 AM, Raghunandan Rao wrote: > Hi, > > I have an app running on weblogic and oracle. Oracle DB is quite huge; > say some 10 millions of records. I need to integrate Solr for this and > I am planning to use multicore. How can multicore feature can be at > the best? > > > > -Raghu >
