Re: multiple solr home directories
Another possible (and convoluted) way is to use SOLR-215 patch which allows multiple indexes within one Solr instance (also at this stage, you'd loose replication and would probably have to adapt the servlet filter). Regards Henri Yu-Hui Jin wrote: Hi, there, I have a few basic questions on setting up Solr home directories. * can we set up multiple Solr home directories within the same Solr instance? (I want to use the same Tomcat Solr instance to support indexing and searching over multiple independent indexes.) * If so, say I have some customized Solr plugins, ie., jar files, do I have to add them to each Solr home's lib directory? ( It feels it's a bit redundant to add them multiple times for the same Solr instance. ) Thanks, -Hui -- View this message in context: http://www.nabble.com/multiple-solr-home-directories-tf4346057.html#a12459726 Sent from the Solr - User mailing list archive at Nabble.com.
Re: multiple solr home directories
Just to make sure. you mean we can create a directory containing the shared jars, and each solr home/lib will symlink to the jar files in that directory. Right? correct. -Hoss
Re: multiple solr home directories
I have a related question on this topic. I have a web application which I would like to create indexes for individual users on the fly, is it possible to do JNDI configuration without restarting Tomcat? Here is some more detail on what I am trying to do: Our search application has a web based administration page in which administrators can select set of documents and make them available for search on different URLs or with different user privileges. I know we could use the same index and filter results based on a indexname field, but having separate indexes would make it easy for us to migrate an index to a different machine easier. Thank you for your help. Ozgur On 8/31/07, Chris Hostetter [EMAIL PROTECTED] wrote: Just to make sure. you mean we can create a directory containing the shared jars, and each solr home/lib will symlink to the jar files in that directory. Right? correct. -Hoss
RE: Re: multiple solr home directories
You can use a combination of the Tomcat Manager app: http://tomcat.apache.org/tomcat-6.0-doc/manager-howto.html and this patch: https://issues.apache.org/jira/browse/SOLR-336 to create instances on the fly. My three types of instances have separate home directories, but each running instance uses a different data directory. Thanks, Stu -Original Message- From: Ozgur Yilmazel Sent: Friday, August 31, 2007 4:48am To: solr-user@lucene.apache.org Subject: Re: multiple solr home directories I have a related question on this topic. I have a web application which I would like to create indexes for individual users on the fly, is it possible to do JNDI configuration without restarting Tomcat? Here is some more detail on what I am trying to do: Our search application has a web based administration page in which administrators can select set of documents and make them available for search on different URLs or with different user privileges. I know we could use the same index and filter results based on a indexname field, but having separate indexes would make it easy for us to migrate an index to a different machine easier. Thank you for your help. Ozgur On 8/31/07, Chris Hostetter wrote: Just to make sure. you mean we can create a directory containing the shared jars, and each solr home/lib will symlink to the jar files in that directory. Right? correct. -Hoss
Re: multiple solr home directories
* can we set up multiple Solr home directories within the same Solr instance? (I want to use the same Tomcat Solr instance to support indexing and searching over multiple independent indexes.) yes. using JNDI you can configure multiple instances of Solr each with a seperate solr home. the tomcat page hs more info on configuring solr home with JNDI in tomcat... http://wiki.apache.org/solr/SolrTomcat * If so, say I have some customized Solr plugins, ie., jar files, do I have to add them to each Solr home's lib directory? ( It feels it's a bit redundant to add them multiple times for the same Solr instance. ) you could, in theory, put plugins at a higher level classloader used by tomcat, but that would require loading most of hte solr/lucne code in the sam classloader -- i don't recommend that approach, and i won't give any advice on how to do it -- because classloader nightmares are bad enough when you understand them in detail. i would recommend that even if you don't want to make multiple copies of the jars, you still use a seperate lib directory for each solr home and symlink each jar ... each solr instance will have it's own custom classloader for dealing with plugins, and this approach will help protect you from the possibility of bad code in any of your plugins causing one instance of solr to affect another (ie: synchronization blocks, singletons, global variables, etc...) -Hoss
Re: multiple solr home directories
Thanks, Hoss, you still use a separate lib directory for each solr home and symlink each jar ... Just to make sure. you mean we can create a directory containing the shared jars, and each solr home/lib will symlink to the jar files in that directory. Right? Thanks, -Hui On 8/30/07, Chris Hostetter [EMAIL PROTECTED] wrote: * can we set up multiple Solr home directories within the same Solr instance? (I want to use the same Tomcat Solr instance to support indexing and searching over multiple independent indexes.) yes. using JNDI you can configure multiple instances of Solr each with a seperate solr home. the tomcat page hs more info on configuring solr home with JNDI in tomcat... http://wiki.apache.org/solr/SolrTomcat * If so, say I have some customized Solr plugins, ie., jar files, do I have to add them to each Solr home's lib directory? ( It feels it's a bit redundant to add them multiple times for the same Solr instance. ) you could, in theory, put plugins at a higher level classloader used by tomcat, but that would require loading most of hte solr/lucne code in the sam classloader -- i don't recommend that approach, and i won't give any advice on how to do it -- because classloader nightmares are bad enough when you understand them in detail. i would recommend that even if you don't want to make multiple copies of the jars, you still use a seperate lib directory for each solr home and symlink each jar ... each solr instance will have it's own custom classloader for dealing with plugins, and this approach will help protect you from the possibility of bad code in any of your plugins causing one instance of solr to affect another (ie: synchronization blocks, singletons, global variables, etc...) -Hoss -- Regards, -Hui
multiple solr home directories
Hi, there, I have a few basic questions on setting up Solr home directories. * can we set up multiple Solr home directories within the same Solr instance? (I want to use the same Tomcat Solr instance to support indexing and searching over multiple independent indexes.) * If so, say I have some customized Solr plugins, ie., jar files, do I have to add them to each Solr home's lib directory? ( It feels it's a bit redundant to add them multiple times for the same Solr instance. ) Thanks, -Hui
