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I've added "copyField source="product" dest="text"/" in schema.xml
solrconfig.xml
<requestHandler name="/select" class="solr.SearchHandler">
<!-- default values for query parameters can be specified, these
will be overridden by parameters in the request
-->
<lst name="defaults">
<str name="echoParams">explicit</str>
<int name="rows">10</int>
<str name="df">text</str>
</lst>
</requestHandler>
I restarted solr and loaded the data again to reflect changes made. My question is whether it is necessary to restart solr every time I make a change in schema.xml.
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The Solr search engine uses a schema. xml file to describe the structure of each data index. This XML files determines how Solr will build indexes from input documents, and how to perform index and query time processing. As well as describing the structure of the index, schema.
The solrconfig. xml file is located in the conf/ directory for each collection. Several well-commented example files can be found in the server/solr/configsets/ directories demonstrating best practices for many different types of installations.
You can issue a RELOAD command to the core -
http://localhost:8983/solr/admin/cores?action=RELOAD&core=core0
That would let you avoid restarting tomcat or jetty and avoid most of the downtime as it will keep the old core running until the new core is ready.
However there are a few things configuration wise that would require a restart. See https://issues.apache.org/jira/browse/SOLR-3592 and https://wiki.apache.org/solr/CoreAdmin#RELOAD
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