Is "Apache Solr" 3rd party component used in DevTest? If yes, what is the version used?
All supported releases and platforms of DevTest.
It is 3rd party library used by the Broker.
As of DevTest 10.6.0, the Apache solr version 4.9 is used in DevTest broker component
You can find the version in file of where the server is installed:
Look for this line: