Index: oak-segment-azure/src/main/java/org/apache/jackrabbit/oak/segment/azure/AzurePersistence.java
===================================================================
--- oak-segment-azure/src/main/java/org/apache/jackrabbit/oak/segment/azure/AzurePersistence.java	(revision 1861574)
+++ oak-segment-azure/src/main/java/org/apache/jackrabbit/oak/segment/azure/AzurePersistence.java	(working copy)
@@ -127,27 +127,28 @@
         }
     }
 
-    private void azureRemoteStoreMonitor(RemoteStoreMonitor remoteStoreMonitor){
-
-        OperationContext operationContext = new OperationContext();
-
-        operationContext.getGlobalRequestCompletedEventHandler().addListener(new StorageEvent<RequestCompletedEvent>() {
+    private void azureRemoteStoreMonitor(RemoteStoreMonitor remoteStoreMonitor) {
+        OperationContext.getGlobalRequestCompletedEventHandler().addListener(new StorageEvent<RequestCompletedEvent>() {
 
             @Override
             public void eventOccurred(RequestCompletedEvent eventArg) {
                 Date startDate = eventArg.getRequestResult().getStartDate();
                 Date stopDate = eventArg.getRequestResult().getStopDate();
-                long requestDuration = stopDate.getTime() - startDate.getTime();
-                remoteStoreMonitor.requestDuration(requestDuration, TimeUnit.MILLISECONDS);
+
+                if (startDate != null && stopDate != null) {
+                    long requestDuration = stopDate.getTime() - startDate.getTime();
+                    remoteStoreMonitor.requestDuration(requestDuration, TimeUnit.MILLISECONDS);
+                }
 
                 Exception exception = eventArg.getRequestResult().getException();
 
-                if(exception == null){
+                if (exception == null) {
                     remoteStoreMonitor.requestCount();
-                }else {
+                } else {
                     remoteStoreMonitor.requestError();
                 }
             }
+
         });
     }