[SOLR] RELOAD solrconfig.xml and schema.xml without restarting the SOLR

Most of the time we get answer that we need to restart the SOLR instance if we make a change in schema.xml and solrconfig.xml.

But now with SOLR4.0 onwards, this can be achieved using RELOAD command.

Command:
http://localhost:8983/solr/admin/cores?action=RELOAD&core=core0

Now, If you make changes to your solrconfig.xml or schema.xml files and you want to start using them without stopping and restarting your SOLR instance. 
Then just execute the RELOAD command on your core.

NOTE:
However there are few configuration changes which still needs, the restart of SOLR instance, 
1) IndexWriter related settings in <indexConfig>
2) Change in <dataDir> location

Hope this Helps!!!

Reference:
https://wiki.apache.org/solr/CoreAdmin#RELOAD