to hopefully finally find and fix bug 736, added the stack trace to the INFO log for adding a regatta leaderboard

java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java

@@ -1,8 +1,11 @@
 package com.sap.sailing.server.impl;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
 import java.io.Serializable;
 import java.net.MalformedURLException;
 import java.net.SocketException;
@@ -268,6 +271,9 @@ public class RacingEventServiceImpl implements RacingEventService, RegattaListen
     public RegattaLeaderboard addRegattaLeaderboard(RegattaIdentifier regattaIdentifier, int[] discardThresholds) {
         Regatta regatta = getRegatta(regattaIdentifier);
         logger.info("adding regatta leaderboard for regatta "+regatta==null?"null":regatta.getName()+" to "+this);
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        new Exception().printStackTrace(new PrintWriter(new OutputStreamWriter(bos)));
+        logger.info("    at "+new String(bos.toByteArray()));
         RegattaLeaderboard result = null;
         if (regatta != null) {
             result = new RegattaLeaderboardImpl(regatta, new ScoreCorrectionImpl(), new ResultDiscardingRuleImpl(