HTTP Status 500 - Timer already cancelled.

type Exception report

message Timer already cancelled.

description The server encountered an internal error that prevented it from fulfilling this request.

exception

java.lang.IllegalStateException: Timer already cancelled.
	java.util.Timer.sched(Timer.java:397)
	java.util.Timer.schedule(Timer.java:193)
	org.openjena.atlas.lib.AlarmClock.add$(AlarmClock.java:66)
	org.openjena.atlas.lib.AlarmClock.add(AlarmClock.java:58)
	com.hp.hpl.jena.sparql.engine.QueryExecutionBase.initTimeout1(QueryExecutionBase.java:426)
	com.hp.hpl.jena.sparql.engine.QueryExecutionBase.startQueryIterator(QueryExecutionBase.java:495)
	com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execResultSet(QueryExecutionBase.java:507)
	com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execDescribe(QueryExecutionBase.java:293)
	com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execDescribe(QueryExecutionBase.java:276)
	de.fuberlin.wiwiss.d2rq.server.ResourceDescriptionServlet.doGet(ResourceDescriptionServlet.java:60)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.56 logs.

Apache Tomcat/7.0.56