Using Drupal, we've tried to import the configuration files from the solr_api_search module. When importing them and trying to initialize the core, I see the following error (Solr 7.7.2):
Could not load conf for core testcore: Can't load schema /data/solr_data/data/testcore/conf/schema.xml: Plugin init failure for [schema.xml] fieldType \"collated_ar\": Error loading class 'solr.ICUCollationField'
This is what the inside of the solrcore.properties file looks like. I added the solr.install.dir option after some people with similar issues reported that it fixed their problem:
solr.replication.master=false
solr.replication.slave=false
solr.replication.pollInterval=00:00:60
solr.replication.masterUrl=http://localhost:8983/solr
solr.replication.confFiles=schema.xml,schema_extra_types.xml,schema_extra_fields.xml,elevate.xml,stopwords_ar.txt,synonyms_ar.txt,nouns_ar.txt,protwords_ar.txt,accents_ar.txt,stopwords_en.txt,synonyms_en.txt,protwords_en.txt,accents_en.txt,stopwords_fr.txt,synonyms_fr.txt,nouns_fr.txt,protwords_fr.txt,accents_fr.txt,stopwords_de.txt,synonyms_de.txt,nouns_de.txt,protwords_de.txt,accents_de.txt,stopwords_el.txt,synonyms_el.txt,nouns_el.txt,protwords_el.txt,accents_el.txt,stopwords_hi.txt,synonyms_hi.txt,nouns_hi.txt,protwords_hi.txt,accents_hi.txt,stopwords_it.txt,synonyms_it.txt,nouns_it.txt,protwords_it.txt,accents_it.txt,stopwords_und.txt,synonyms_und.txt,protwords_und.txt,accents_und.txt,stopwords_pl.txt,synonyms_pl.txt,nouns_pl.txt,protwords_pl.txt,accents_pl.txt,stopwords_pt-br.txt,synonyms_pt-br.txt,nouns_pt-br.txt,protwords_pt-br.txt,accents_pt-br.txt,stopwords_ru.txt,synonyms_ru.txt,nouns_ru.txt,protwords_ru.txt,accents_ru.txt,stopwords_es.txt,synonyms_es.txt,nouns_es.txt,protwords_es.txt,accents_es.txt,stopwords_tr.txt,synonyms_tr.txt,nouns_tr.txt,protwords_tr.txt,accents_tr.txt
solr.luceneMatchVersion=7.7
solr.install.dir=/opt/solr
This is the process running with ps -ef:
java -server -Xms512m -Xmx512m -XX:NewRatio=3 -XX:SurvivorRatio=4 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=8 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:+CMSScavengeBeforeRemark -XX:PretenureSizeThreshold=64m -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=50 -XX:CMSMaxAbortablePrecleanTime=6000 -XX:+CMSParallelRemarkEnabled -XX:+ParallelRefProcEnabled -verbose:gc -XX:+PrintHeapAtGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime -Xloggc:/data/solr_data/logs/solr_gc.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=9 -XX:GCLogFileSize=20M -Dsolr.log.dir=/data/solr_data/logs -Djetty.port=8983 -DSTOP.PORT=7983 -DSTOP.KEY=solrrocks -Duser.timezone=UTC -Djetty.home=/opt/solr/server -Dsolr.solr.home=/data/solr_data/data -Dsolr.data.home= -Dsolr.install.dir=/opt/solr -Dsolr.default.confdir=/opt/solr/server/solr/configsets/_default/conf -Dlog4j.configurationFile=file:/data/solr_data/log4j.properties -Xss256k -Xss256k -Dsolr.jetty.https.port=8983 -Dsolr.log.muteconsole -XX:OnOutOfMemoryError=/opt/solr/bin/oom_solr.sh 8983 /data/solr_data/logs -jar start.jar --module=http
I have the following libraries inside of /opt/solr/contrib/analysis-extras/lib
-rw-r--r--. 1 solr solr 12370975 Jun 20 2018 icu4j-62.1.jar
-rw-r--r--. 1 solr solr 20140 Feb 18 2018 morfologik-fsa-2.1.5.jar
-rw-r--r--. 1 solr solr 1886867 Feb 18 2018 morfologik-polish-2.1.5.jar
-rw-r--r--. 1 solr solr 53644 Feb 18 2018 morfologik-stemming-2.1.5.jar
-rw-r--r--. 1 solr solr 1245779 Jun 29 2018 opennlp-tools-1.9.0.jar
Is there some option that I am missing in order to get Solr to load the .jar files?
SOlr requires different features that require an optional libraries. All of these are comes with Solr. You need to adjust solr.install.dir like already mentioned in file named INSTALL.md
Updating path to solr.install.dir=/opt/solr in solrcore.properties to fix the issue.
Check the jar named as "icu4j-62.1.jar". Check the path of the same is mentioned in solrConfig.xml and check it the lib is getting loaded.