diff --git a/src/Jaeger/Jaeger.php b/src/Jaeger/Jaeger.php
index cb95636..a1e0b76 100644
--- a/src/Jaeger/Jaeger.php
+++ b/src/Jaeger/Jaeger.php
@@ -34,24 +34,16 @@ class Jaeger implements Tracer{
 
     private $scopeManager;
 
-    public static $handleProto = null;
-
     public $spans = [];
 
     public $tags = [];
 
     public $process = null;
 
-    public $procesSize = 0;
-
     public $serverName = '';
 
-    public $bufferSize = '';
-
     public $processThrift = '';
 
-    public $spanThrifts = [];
-
     public $propagator = null;
 
     public function __construct($serverName = '', Reporter $reporter, Sampler $sampler,
diff --git a/src/Jaeger/Transport/TransportUdp.php b/src/Jaeger/Transport/TransportUdp.php
index 8402965..c3e6464 100644
--- a/src/Jaeger/Transport/TransportUdp.php
+++ b/src/Jaeger/Transport/TransportUdp.php
@@ -102,8 +102,6 @@ public function append(Jaeger $jaeger)
                 continue;
             }
 
-            $jaeger->spanThrifts[] = $spanThrift;
-
             if ($this->bufferSize + $spanSize >= self::$maxSpanBytes) {
                 self::$batchs[] = [
                     'thriftProcess' => $jaeger->processThrift,