Index: jackrabbit-api/src/main/java/org/apache/jackrabbit/api/stats/RepositoryStatistics.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- jackrabbit-api/src/main/java/org/apache/jackrabbit/api/stats/RepositoryStatistics.java	(date 1391592440000)
+++ jackrabbit-api/src/main/java/org/apache/jackrabbit/api/stats/RepositoryStatistics.java	(date 1391636457000)
@@ -23,6 +23,7 @@
  */
 public interface RepositoryStatistics {
 
+    // TODO document
     enum Type {
         BUNDLE_READ_COUNTER(true),
         BUNDLE_WRITE_COUNTER(true),
@@ -45,7 +46,10 @@
         SESSION_COUNT(false),
         QUERY_COUNT(true),
         QUERY_DURATION(true),
-        QUERY_AVERAGE(true);
+        QUERY_AVERAGE(true),  // FIXME false!?
+        OBSERVATION_EVENT_COUNTER(true),
+        OBSERVATION_EVENT_DURATION(true),
+        OBSERVATION_EVENT_AVERAGE(true);
 
         private final boolean resetValueEachSecond;
 
Index: jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/stats/RepositoryStatisticsImpl.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/stats/RepositoryStatisticsImpl.java	(date 1391592440000)
+++ jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/stats/RepositoryStatisticsImpl.java	(date 1391636457000)
@@ -49,8 +49,10 @@
                 Type.BUNDLE_CACHE_MISS_DURATION, Type.BUNDLE_CACHE_MISS_AVERAGE);
         createAvg(Type.BUNDLE_WRITE_COUNTER, Type.BUNDLE_WRITE_DURATION,
                 Type.BUNDLE_WRITE_AVERAGE);
-        createAvg(Type.QUERY_COUNT, Type.QUERY_DURATION, Type.QUERY_AVERAGE);
-
+        createAvg(Type.QUERY_COUNT, Type.QUERY_DURATION,
+                Type.QUERY_AVERAGE);
+        createAvg(Type.OBSERVATION_EVENT_COUNTER, Type.OBSERVATION_EVENT_DURATION,
+                Type.OBSERVATION_EVENT_AVERAGE);
     }
 
     private void createAvg(Type count, Type duration, Type avgTs) {