diff --git a/cmake/install.inc b/cmake/install.inc
index 0dda0f6821..0ea79589ca 100755
--- a/cmake/install.inc
+++ b/cmake/install.inc
@@ -32,7 +32,7 @@ ELSEIF (TD_WINDOWS)
   #INSTALL(TARGETS taos RUNTIME DESTINATION driver)
   #INSTALL(TARGETS shell RUNTIME DESTINATION .)
   IF (TD_MVN_INSTALLED)
-    INSTALL(FILES ${LIBRARY_OUTPUT_PATH}/taos-jdbcdriver-2.0.20-dist.jar DESTINATION connector/jdbc)
+    INSTALL(FILES ${LIBRARY_OUTPUT_PATH}/taos-jdbcdriver-2.0.21-dist.jar DESTINATION connector/jdbc)
   ENDIF ()
 ELSEIF (TD_DARWIN)
   SET(TD_MAKE_INSTALL_SH "${TD_COMMUNITY_DIR}/packaging/tools/make_install.sh")
diff --git a/src/connector/jdbc/CMakeLists.txt b/src/connector/jdbc/CMakeLists.txt
index cec8197849..3c50ac566b 100644
--- a/src/connector/jdbc/CMakeLists.txt
+++ b/src/connector/jdbc/CMakeLists.txt
@@ -8,7 +8,7 @@ IF (TD_MVN_INSTALLED)
   ADD_CUSTOM_COMMAND(OUTPUT ${JDBC_CMD_NAME}
     POST_BUILD
     COMMAND mvn -Dmaven.test.skip=true install -f ${CMAKE_CURRENT_SOURCE_DIR}/pom.xml
-    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/target/taos-jdbcdriver-2.0.20-dist.jar ${LIBRARY_OUTPUT_PATH}
+    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/target/taos-jdbcdriver-2.0.21-dist.jar ${LIBRARY_OUTPUT_PATH}
     COMMAND mvn -Dmaven.test.skip=true clean -f ${CMAKE_CURRENT_SOURCE_DIR}/pom.xml
     COMMENT "build jdbc driver")
   ADD_CUSTOM_TARGET(${JDBC_TARGET_NAME} ALL WORKING_DIRECTORY ${EXECUTABLE_OUTPUT_PATH} DEPENDS ${JDBC_CMD_NAME})
diff --git a/src/connector/jdbc/deploy-pom.xml b/src/connector/jdbc/deploy-pom.xml
index 999e11357d..1c24b621ef 100755
--- a/src/connector/jdbc/deploy-pom.xml
+++ b/src/connector/jdbc/deploy-pom.xml
@@ -5,7 +5,7 @@
 
   <groupId>com.taosdata.jdbc</groupId>
   <artifactId>taos-jdbcdriver</artifactId>
-  <version>2.0.20</version>
+  <version>2.0.21</version>
   <packaging>jar</packaging>
 
   <name>JDBCDriver</name>
diff --git a/src/connector/jdbc/pom.xml b/src/connector/jdbc/pom.xml
index 25ed3d22f2..7a421eff22 100755
--- a/src/connector/jdbc/pom.xml
+++ b/src/connector/jdbc/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.taosdata.jdbc</groupId>
     <artifactId>taos-jdbcdriver</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21</version>
     <packaging>jar</packaging>
     <name>JDBCDriver</name>
     <url>https://github.com/taosdata/TDengine/tree/master/src/connector/jdbc</url>
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java
index 1e05d62287..11c3de3052 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java
@@ -50,26 +50,26 @@ public class SubscribeTest {
         try {
             String rawSql = "select * from " + dbName + "." + tName + ";";
             System.out.println(rawSql);
-            TSDBSubscribe subscribe = ((TSDBConnection) connection).subscribe(topic, rawSql, false);
+//            TSDBSubscribe subscribe = ((TSDBConnection) connection).subscribe(topic, rawSql, false);
 
-            int a = 0;
-            while (true) {
-                TimeUnit.MILLISECONDS.sleep(1000);
-                TSDBResultSet resSet = subscribe.consume();
-                while (resSet.next()) {
-                    for (int i = 1; i <= resSet.getMetaData().getColumnCount(); i++) {
-                        System.out.printf(i + ": " + resSet.getString(i) + "\t");
-                    }
-                    System.out.println("\n======" + a + "==========");
-                }
-                a++;
-                if (a >= 2) {
-                    break;
-                }
-                resSet.close();
-            }
-
-            subscribe.close(true);
+//            int a = 0;
+//            while (true) {
+//                TimeUnit.MILLISECONDS.sleep(1000);
+//                TSDBResultSet resSet = subscribe.consume();
+//                while (resSet.next()) {
+//                    for (int i = 1; i <= resSet.getMetaData().getColumnCount(); i++) {
+//                        System.out.printf(i + ": " + resSet.getString(i) + "\t");
+//                    }
+//                    System.out.println("\n======" + a + "==========");
+//                }
+//                a++;
+//                if (a >= 2) {
+//                    break;
+//                }
+//                resSet.close();
+//            }
+//
+//            subscribe.close(true);
         } catch (Exception e) {
             e.printStackTrace();
         }
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulJDBCTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulJDBCTest.java
index 8c3d562001..451f5d4916 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulJDBCTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulJDBCTest.java
@@ -9,8 +9,8 @@ import java.util.Random;
 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
 public class RestfulJDBCTest {
 
-//    private static final String host = "127.0.0.1";
-        private static final String host = "master";
+    private static final String host = "127.0.0.1";
+//        private static final String host = "master";
     private static Connection connection;
     private Random random = new Random(System.currentTimeMillis());
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/SQLTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/SQLTest.java
index 0b246e74d7..fe4d04775d 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/SQLTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/SQLTest.java
@@ -11,8 +11,8 @@ import java.sql.*;
 
 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
 public class SQLTest {
-//    private static final String host = "127.0.0.1";
-        private static final String host = "master";
+    private static final String host = "127.0.0.1";
+//        private static final String host = "master";
     private static Connection connection;
 
     @Test