Initialize _queueSize properly in OperatorInterface

analytics/includes/OperatorInterface.h

@@ -90,6 +90,7 @@ public:
             _keepRunning(0),
             _minValues(1),
             _interval(1000),
+            _queueSize(1024),
             _cacheInterval(900000),
             _unitCacheLimit(1000),
             _cacheSize(1),
@@ -116,6 +117,7 @@ public:
             _keepRunning(other._keepRunning),
             _minValues(other._minValues),
             _interval(other._interval),
+            _queueSize(other._queueSize),
             _cacheInterval(other._cacheInterval),
             _unitCacheLimit(other._unitCacheLimit),
             _cacheSize(other._cacheSize),
@@ -148,6 +150,7 @@ public:
         _minValues = other._minValues;
         _interval = other._interval;
         _cacheInterval = other._cacheInterval;
+        _queueSize = other._queueSize;
         _unitCacheLimit = other._unitCacheLimit;
         _cacheSize = other._cacheSize;
         _delayInterval = other._delayInterval;