Thanks Shawn. So I'm not insane! Is there a way to specify a "jar" load order? I'm trying to use UIMA's concept mapper and it requires a particular load order, otherwise it doesn't instantiate and errors out. I was able to do this with the "lib" directives.
Thanks again. Bob On Tue, Jan 3, 2017 at 12:13 AM, Shawn Heisey <apa...@elyograg.org> wrote: > On 1/2/2017 7:07 PM, Bob Cook wrote: > > I've create some custom plugin that I put in a lib directory at the > > same level as the conf directory for the core which is loaded via the > > lib directives in solrconfig.xml /solrdata/CoreName/conf > > /solrdata/CoreName/lib /solrdata/CoreName/core.properties This works > > great when using Solr. But when I use SolrCloud, I get an error when > > creating the collection as it can't find the plugin libraries. Now > > that Zookeeper is managing the conf directory (configuration files, > > i.e. solrconfig.xml), what is the relative path in solrconfig.xml > > pointing to? > > I actually do not know what the path for lib directives is relative to > when running SolrCloud. Most things in a core config are relative to > the location of the config file itself, but in this case, the config > file is not on the filesystem at all, it's in zookeeper, and I don't > think Solr can use jars in zookeeper. Also there's a size limit of one > megabyte for items in zookeeper without special config, and increasing > the limit is not recommended. > > > how do I specify the relative path, or do I need to specify an > > absolute path? Or do I need to put the libraries somewhere else? > > My recommendation: Do not use "lib" directives, or any other kind of > jar-loading related config including sharedLib, at all. On each > machine, create a "lib" directory in the solr home and place all your > extra jars there. The solr home is where solr.xml lives and where the > core directories normally go. All jars in this lib directory will be > loaded exactly once at startup and made available to all cores, without > *any* config. > > You can also create a lib directory inside the core's instanceDir, which > is also automatically loaded by Solr without config, but this presents a > bit of a catch-22 problem where you can't create the lib directory until > the core exists, but can't get the core to work properly until the lib > directory exists. > > There is a feature in SolrCloud for loading jars from a distributed > collection. It doesn't work everywhere in Solr, but classes specified > in solrconfig.xml, for things like request handlers, should work. > > https://cwiki.apache.org/confluence/display/solr/Blob+Store+API > > There is an enhancement request filed to allow the schema to use jars > from the blob store, but it hasn't received much attention yet: > > https://issues.apache.org/jira/browse/SOLR-9175 > > Thanks, > Shawn > >
