misc improvements

engine-core/src/main/java/io/nosqlbench/engine/core/logging/NBLoggerConfig.java

@@ -239,6 +239,10 @@ public class NBLoggerConfig extends ConfigurationFactory {
                 builder.newAppenderRef("SESSION_APPENDER")
                     .addAttribute("level", fileLevel)
             );
+        } else {
+            throw new RuntimeException("Session name must be set in logger config. If you are getting this error, then it means" +
+                " that the session has not initialized properly, and that some unexpected error occurred before the logging" +
+                " system was initialized. Look for errors prior to this.");
         }
 
         rootBuilder.add(

nb-api/src/main/java/io/nosqlbench/nb/api/components/status/NBStatusComponent.java

@@ -40,19 +40,13 @@ public class NBStatusComponent extends NBBaseComponent {
     }
 
     public Status status() {
+
         List<Status> subbeats = new ArrayList<>();
         StatusVisitor statusVisitor = new StatusVisitor(subbeats);
-
         for (NBComponent child : getChildren()) {
             NBComponentTraversal.visitDepthFirstLimited(child,statusVisitor,c -> c instanceof NBStatusComponent);
         }
 
-//        for (NBComponent child : getChildren()) {
-//            if (child instanceof NBStatusComponent beat) {
-//                subbeats.add(beat.heartbeat());
-//            }
-//        }
-
         return new Status(
             getLabels(),
             this.getComponentState(),

virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/vectors/dnn/DNN_euclidean_v_wrap.java

@@ -22,6 +22,11 @@ import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;
 
 import java.util.function.LongFunction;
 
+/**
+ * This represents an enumerated population of vectors of some dimension,
+ * where any ordinal values which address outside of that enumeration
+ * simply wrap with modulo.
+ */
 @ThreadSafeMapper
 @Categories(Category.experimental)
 public class DNN_euclidean_v_wrap implements LongFunction<float[]> {