diff --git a/src/main/java/io/mycat/backend/jdbc/mongodb/MongoEmbeddedObjectProcessor.java b/src/main/java/io/mycat/backend/jdbc/mongodb/MongoEmbeddedObjectProcessor.java
index 88e7a764a..88fa0e92b 100755
--- a/src/main/java/io/mycat/backend/jdbc/mongodb/MongoEmbeddedObjectProcessor.java
+++ b/src/main/java/io/mycat/backend/jdbc/mongodb/MongoEmbeddedObjectProcessor.java
@@ -141,7 +141,7 @@ private static Class<?> getParameterizedClass(Field field) {
             if (pt.getActualTypeArguments() == null || pt.getActualTypeArguments().length == 0) {
                 return null;
             }
-            parameterizedType = pt.getActualTypeArguments()[0].getTypeName();
+            parameterizedType = pt.getActualTypeArguments()[0].toString();
         } else {
             return null;
         }
diff --git a/src/main/java/io/mycat/config/model/SystemConfig.java b/src/main/java/io/mycat/config/model/SystemConfig.java
index 15169ce1e..77da29458 100644
--- a/src/main/java/io/mycat/config/model/SystemConfig.java
+++ b/src/main/java/io/mycat/config/model/SystemConfig.java
@@ -72,7 +72,7 @@ public final class SystemConfig {
 	private static final String DEFAULT_CLUSTER_HEARTBEAT_PASS = "_HEARTBEAT_PASS_";
 	private static final int DEFAULT_PARSER_COMMENT_VERSION = 50148;
 	private static final int DEFAULT_SQL_RECORD_COUNT = 10;
-	private static final boolean DEFAULT_USE_ZK_SWITCH = true;
+	private static final boolean DEFAULT_USE_ZK_SWITCH = false;
 	private int maxStringLiteralLength = 65535;
 	private int frontWriteQueueSize = 2048;
 	private String bindIp = "0.0.0.0";
diff --git a/src/main/resources/server.xml b/src/main/resources/server.xml
index 09467e4b9..9777c8274 100644
--- a/src/main/resources/server.xml
+++ b/src/main/resources/server.xml
@@ -62,7 +62,7 @@
 
 
 		<!--是否采用zookeeper协调切换  -->
-		<property name="useZKSwitch">true</property>
+		<property name="useZKSwitch">false</property>
 
 		<!-- XA Recovery Log日志路径 -->
 		<!--<property name="XARecoveryLogBaseDir">./</property>-->
diff --git a/src/test/java/io/mycat/buffer/TestByteBufferArena.java b/src/test/java/io/mycat/buffer/TestByteBufferArena.java
index eaf5296ae..55bce2456 100644
--- a/src/test/java/io/mycat/buffer/TestByteBufferArena.java
+++ b/src/test/java/io/mycat/buffer/TestByteBufferArena.java
@@ -47,8 +47,8 @@ public void testAllocate() {
 
     @Test
     public void testAllocateDirect() {
-        int pageSize = 1024 * 1024 * 100;
-        int allocTimes = 1024;
+        int pageSize = 1024 ;
+        int allocTimes = 100;
         DirectByteBufferPool pool = new DirectByteBufferPool(pageSize, (short) 256, (short) 8,0);
         long start = System.currentTimeMillis();
         for (int i = 0; i < allocTimes; i++) {
@@ -65,7 +65,7 @@ public void testAllocateDirect() {
             //System.out.println("recycle usage "+(System.nanoTime()-start));
         }
         long used = (System.currentTimeMillis() - start);
-        System.out.println("DirectByteBufferPool total used time  " + used + " avg speed " + allocTimes / used);
+//        System.out.println("DirectByteBufferPool total used time  " + used + " avg speed " + allocTimes / used);
     }
 
     @Test
diff --git a/src/test/java/io/mycat/buffer/TestDirectByteBufferPool.java b/src/test/java/io/mycat/buffer/TestDirectByteBufferPool.java
index 3fd146a33..76ba5ebdc 100644
--- a/src/test/java/io/mycat/buffer/TestDirectByteBufferPool.java
+++ b/src/test/java/io/mycat/buffer/TestDirectByteBufferPool.java
@@ -15,7 +15,7 @@ public class TestDirectByteBufferPool {
 
     @Test
     public void testAllocate() {
-        int pageSize = 1024 * 1024 * 100;
+        int pageSize = 1024 ;
         int allocTimes = 1024;
         DirectByteBufferPool pool = new DirectByteBufferPool(pageSize, (short) 256, (short) 8,0);
         long start = System.currentTimeMillis();