Only one service can use the triple store at a time.

[rmathew1011]

ERROR 68152 --- [task-scheduler1] o.s.s.s.TaskUtils$LoggingErrorHandler    : Unexpected error occurred in scheduled task

org.apache.jena.tdb.TDBException: Process ID 68152 can't open database at location /Users/rmathew/Documents/workspace/scholars/scholars-discovery/triplestore/ because it is already locked by the process with PID 67126. TDB databases do not permit concurrent usage across JVMs so in order to prevent possible data corruption you cannot open this location from the JVM that does not own the lock for the dataset
	at org.apache.jena.tdb.StoreConnection._makeAndCache(StoreConnection.java:282) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.StoreConnection.make(StoreConnection.java:244) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.StoreConnection.make(StoreConnection.java:258) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.transaction.DatasetGraphTransaction.<init>(DatasetGraphTransaction.java:69) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.sys.TDBMaker.createDirect(TDBMaker.java:126) ~[jena-tdb-3.17.0.jar:3.17.0]
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705) ~[na:na]
	at org.apache.jena.tdb.sys.TDBMaker._create(TDBMaker.java:112) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.sys.TDBMaker.createDatasetGraphTransaction(TDBMaker.java:43) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.TDBFactory._createDatasetGraph(TDBFactory.java:93) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.TDBFactory.createDatasetGraph(TDBFactory.java:71) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.TDBFactory.createDataset(TDBFactory.java:55) ~[jena-tdb-3.17.0.jar:3.17.0]
	at org.apache.jena.tdb.TDBFactory.createDataset(TDBFactory.java:51) ~[jena-tdb-3.17.0.jar:3.17.0]
	at edu.tamu.scholars.middleware.service.TDBTriplestore.init(TDBTriplestore.java:39) ~[classes/:na]
	at edu.tamu.scholars.middleware.discovery.service.IndexService.index(IndexService.java:177) ~[classes/:na]
	at edu.tamu.scholars.middleware.discovery.service.IndexService$1.run(IndexService.java:167) ~[classes/:na]