Endeca Forge recordstore adapter Fails with Exception - com.endeca.edf.adapter.AdapterException: java.lang.RuntimeException: java.io.IOException

Problem Statement:
Endeca Forge is failing with the following exception. 

Forge Log:
ERROR FORGE {baseline}: (AdapterRunner): java.lang.RuntimeException: java.io.IOException: http://localhost:8500/CRS_en_data/?wsdl returned response code 404 com.endeca.edf.adapter.AdapterException: java.lang.RuntimeException: java.io.IOException

CAS Log:

ERROR [] [main] com.endeca.itl.bootstrap.CasBootStrapServlet: Failed to initialize CAS: java.sql.SQLException: Database lock acquisition failure: lockFile: org.hsqldb.persist.LockFile@6c679e04[file =/opt/app/endeca/CAS/workspace/state/cas/db/db.lck, exists=true, locked=false, valid=false, ]

Solution:

Above Exception means forge adapter is not able to communicate with CAS record store instance.  There is lock acquired on hsqldb.

Best way to release lock is kill CAS process and restart it.