Thank you Erick and Shawn. I needed to separate the data from the Solr application so that Solr can be uninstalled / reinstalled / upgraded without impact on the data or the configuration of the core. I did some more research and found it here: https://cwiki.apache.org/confluence/display/solr/Solr+Start+Script+Reference The "-s" parameter will let me tell Solr where my index should be created. This works great and I will use it unless if someone tells me "no way, here is why".
Steve On Tue, Jul 14, 2015 at 4:18 PM, Erick Erickson <erickerick...@gmail.com> wrote: > I'd ask a different question, "why do you want to > change the data dir in the first place?"... > > Just askin' since it's possible you started down > this path without really needing to. Why isn't the > default place, a "data" directory under each core > adequate? > > Best, > Erick > > On Tue, Jul 14, 2015 at 1:13 PM, Shawn Heisey <apa...@elyograg.org> wrote: > > On 7/14/2015 12:55 PM, Steven White wrote: > >> Help me understand this. Are you saying this is > >> https://wiki.apache.org/solr/SolrConfigXml#System_property_substitution > how > >> we should specify the "dataDir"? > > > > That wiki page shows what I think is a horrible example. It would be > > completely unworkable if there's more than one core, because the value > > of solr.data.dir is "/data/dir" which is an absolute path. With that > > setting, if that dataDir element were present in all the solrconfig.xml > > files, it would force all the cores to try and use the same absolute > > dataDir. That would be a complete disaster. > > > > > >> In that link, there is the statement "substituted can be put into a > >> properties file" but it is not clear what this "properties file" is. > Is it > >> "solrcore.properties"? If so, where is that file and where should it be > >> (assuming I must create it). Also, I looked at > >> https://cwiki.apache.org/confluence/display/solr/Format+of+solr.xml > and I > >> cannot find an example of "dataDir". > > > > The URL you have included is a link to the Solr reference guide for the > > next version of Solr (5.3 as of right now). You can't find dataDir in > > relation to solr.xml because the new format of solr.xml (which is the > > only format supported by Solr 5.x) doesn't specify cores. Only the OLD > > solr.xml format, which Solr 4.10.x and earlier can use, lets you specify > > dataDir. I strongly recommend using the new format. Here's some > > documentation on the older format: > > > > https://wiki.apache.org/solr/Solr.xml%20%28supported%20through%204.x%29 > > > >> I also found this: > >> https://wiki.apache.org/solr/Solr.xml%204.4%20and%20beyond but this > link, > >> while it talks about "dataDir" it does not show an example of how to > >> specify it in solr.xml file. > >> > >> In my case, I'm on 5.2.1 a none cloud setup (just 1 core). I.e.: my > setup > >> is very similar to "\solr-5.2.1\example\example-DIH\solr". > > > > I am talking about specifying dataDir in the core.properties file, not > > putting solr.data.dir in the solrcore.properties file. I actually have > > never used solrcore.properties, so I really don't know where it goes. > > Here is a snippet where I am sitting in my solr home and display one of > > my core.properties files: > > > > root@idxb3:/index/solr4# cat ./cores/s0_0/core.properties > > #Written by CorePropertiesLocator > > #Sat May 02 16:11:54 MDT 2015 > > name=s0build > > dataDir=../../data/s0_0 > > loadonStartup=false > > transient=false > > > > Once you understand how everything fits together, and you know that my > > solr home is /index/solr4, you will be able to see all the following > > info in what I pasted above: This core's instanceDir is > > /index/solr4/cores/s0_0. The name of the core is s0build. Its dataDir > > (which in the properties file is a relative path -- relative to > > instanceDir)is /index/solr4/data/s0_0. > > > > Here's another core.properties file. This core is named s0live, and > > uses s0_1 in all the places where the previous file had s0_0: > > > > root@idxb3:/index/solr4# cat ./cores/s0_1/core.properties > > #Written by CorePropertiesLocator > > #Sat May 02 16:11:54 MDT 2015 > > name=s0live > > dataDir=../../data/s0_1 > > loadonStartup=false > > transient=false > > > > I hope you can make sense out of all this information. > > > > Thanks, > > Shawn > > >
