using only one connection string for jdbc

src/main/java/de/uulm/omi/workload/ycsb/YCSBCommandBuilder.java

@@ -140,7 +140,9 @@ public class YCSBCommandBuilder {
     StringJoiner cockroachDBConnection = new StringJoiner(";");
 
     //create n host permutations to load balance load equally, postgres jdbc driver only issues load against the first host and uses the remaining as fail over
-    for(int i = 0; i < dbEndpoints.size(); i++){
+    //for(int i = 0; i < dbEndpoints.size(); i++){
+
+    for(int i = 0; i < 1; i++){
 
       dbEndpoints.add(dbEndpoints.get(0));
       dbEndpoints.remove(0);