apache · jt2594838 · Jul 31, 2025 · Jul 30, 2025 · Jul 30, 2025 · Jul 30, 2025
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -133,7 +133,7 @@ mvn clean package -DskipTests
 Mark `iotdb-core/antlr/target/generated-sources/antlr4` and `iotdb-protocol/thrift-datanode/target/generated-sources/thrift` as `Source Root`.
 
 * Server main function：`iotdb-core/datanode/src/main/java/org/apache/iotdb/db/service/DataNode`, can be started in debug mode.
-* Cli：`iotdb-client/cli/src/main/java/org/apache/iotdb/cli/`，Use Cli for linux and WinCli for windows, you can start directly with the parameter "`-h 127.0.0.1 -p 6667 -u root -pw IoTDB@2011`"
+* Cli：`iotdb-client/cli/src/main/java/org/apache/iotdb/cli/`，Use Cli for linux and WinCli for windows, you can start directly with the parameter "`-h 127.0.0.1 -p 6667 -u root -pw root`"
 * Server rpc implementation (mainly used for cli and server communication, generally start interruption point here):`iotdb-core/datanode/src/main/java/org/apache/iotdb/db/service/TSServiceImpl`
 * all jdbc statements：`executeStatement(TSExecuteStatementReq req)`
 * jdbc query：`executeQueryStatement(TSExecuteStatementReq req)`	

diff --git a/README.md b/README.md
@@ -334,9 +334,9 @@ Users can start 1C1D IoTDB by the start-standalone script under the sbin folder.
 
 IoTDB offers different ways to interact with server, here we introduce the basic steps of using Cli tool to insert and query data.
 
-After installing IoTDB, there is a default user 'root', its default password is 'IoTDB@2011'. Users can use this
+After installing IoTDB, there is a default user 'root', its default password is 'root'. Users can use this
 default user to login Cli to use IoTDB. The start-up script of Cli is the start-cli script in the folder sbin. When executing the script, user should assign
-IP, PORT, USER_NAME and PASSWORD. The default parameters are "-h 127.0.0.1 -p 6667 -u root -pw IoTDB@2011".
+IP, PORT, USER_NAME and PASSWORD. The default parameters are "-h 127.0.0.1 -p 6667 -u root -pw root".
 
 Here is the command for starting the Cli:
 

diff --git a/README_ZH.md b/README_ZH.md
@@ -209,9 +209,9 @@ git checkout rel/x.x
 
 IoTDB提供了与服务器交互的不同方式，这里我们将介绍使用 Cli 工具插入和查询数据的基本步骤。
 
-安装 IoTDB 后，有一个默认的用户`root`，它的默认密码是`IoTDB@2011`。用户可以使用这个
+安装 IoTDB 后，有一个默认的用户`root`，它的默认密码是`root`。用户可以使用这个
 默认用户登录 Cli 并使用 IoTDB。Cli 的启动脚本是 sbin 文件夹中的 start-cli 脚本。
-在执行脚本时，用户应该指定 IP，端口，USER_NAME 和 密码。默认参数为`-h 127.0.0.1 -p 6667 -u root -pw IoTDB@2011`。
+在执行脚本时，用户应该指定 IP，端口，USER_NAME 和 密码。默认参数为`-h 127.0.0.1 -p 6667 -u root -pw root`。
 
 
 下面是启动 Cli 的命令:

diff --git a/example/client-cpp-example/src/AlignedTimeseriesSessionExample.cpp b/example/client-cpp-example/src/AlignedTimeseriesSessionExample.cpp
@@ -339,7 +339,7 @@ void deleteStorageGroups() {
 int main() {
     LOG_LEVEL = LEVEL_DEBUG;
 
-    session = new Session("127.0.0.1", 6667, "root", "IoTDB@2011");
+    session = new Session("127.0.0.1", 6667, "root", "root");
 
     cout << "session open\n" << endl;
     session->open(false);

diff --git a/example/client-cpp-example/src/SessionExample.cpp b/example/client-cpp-example/src/SessionExample.cpp
@@ -376,7 +376,7 @@ void queryLast() {
 int main() {
     LOG_LEVEL = LEVEL_DEBUG;
 
-    session = new Session("127.0.0.1", 6667, "root", "IoTDB@2011");
+    session = new Session("127.0.0.1", 6667, "root", "root");
     session->open(false);
 
     cout << "setStorageGroup: root.sg1\n" << endl;

diff --git a/example/client-cpp-example/src/TableModelSessionExample.cpp b/example/client-cpp-example/src/TableModelSessionExample.cpp
@@ -99,7 +99,7 @@ int main() {
             ->host("127.0.0.1")
             ->rpcPort(6667)
             ->username("root")
-            ->password("IoTDB@2011")
+            ->password("root")
             ->build();
 
 
@@ -165,7 +165,7 @@ int main() {
             ->host("127.0.0.1")
             ->rpcPort(6667)
             ->username("root")
-            ->password("IoTDB@2011")
+            ->password("root")
             ->database("db1")
             ->build();
 

diff --git a/example/jdbc/src/main/java/org/apache/iotdb/JDBCCharsetExample.java b/example/jdbc/src/main/java/org/apache/iotdb/JDBCCharsetExample.java
@@ -41,7 +41,7 @@ public static void main(String[] args) throws Exception {
 
     try (final Connection connection =
             DriverManager.getConnection(
-                "jdbc:iotdb://127.0.0.1:6667?charset=GB18030", "root", "IoTDB@2011");
+                "jdbc:iotdb://127.0.0.1:6667?charset=GB18030", "root", "root");
         final IoTDBStatement statement = (IoTDBStatement) connection.createStatement()) {
 
       final String insertSQLWithGB18030 =
@@ -63,7 +63,7 @@ private static void outputResult(String charset) throws SQLException {
     System.out.println("[Charset: " + charset + "]");
     try (final Connection connection =
             DriverManager.getConnection(
-                "jdbc:iotdb://127.0.0.1:6667?charset=" + charset, "root", "IoTDB@2011");
+                "jdbc:iotdb://127.0.0.1:6667?charset=" + charset, "root", "root");
         final IoTDBStatement statement = (IoTDBStatement) connection.createStatement()) {
       outputResult(statement.executeQuery("select ** from root"), Charset.forName(charset));
     } catch (IoTDBSQLException e) {

diff --git a/example/jdbc/src/main/java/org/apache/iotdb/JDBCExample.java b/example/jdbc/src/main/java/org/apache/iotdb/JDBCExample.java
@@ -39,7 +39,7 @@ public static void main(String[] args) throws ClassNotFoundException, SQLExcepti
     Class.forName("org.apache.iotdb.jdbc.IoTDBDriver");
     try (Connection connection =
             DriverManager.getConnection(
-                "jdbc:iotdb://127.0.0.1:6667?version=V_1_0", "root", "IoTDB@2011");
+                "jdbc:iotdb://127.0.0.1:6667?version=V_1_0", "root", "root");
         Statement statement = connection.createStatement()) {
 
       // set JDBC fetchSize

diff --git a/example/jdbc/src/main/java/org/apache/iotdb/PrepareStatementDemo.java b/example/jdbc/src/main/java/org/apache/iotdb/PrepareStatementDemo.java
@@ -37,7 +37,7 @@ public class PrepareStatementDemo {
   public static void main(String[] args) throws ClassNotFoundException, SQLException {
     Class.forName("org.apache.iotdb.jdbc.IoTDBDriver");
     try (Connection connection =
-            DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "IoTDB@2011");
+            DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
         PreparedStatement preparedStatement =
             connection.prepareStatement(
                 "insert into root.ln.wf01.wt01(timestamp,status,temperature) values(?,?,?)")) {

diff --git a/example/jdbc/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java b/example/jdbc/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
@@ -69,7 +69,7 @@ public static void main(String[] args) throws ClassNotFoundException, SQLExcepti
     Class.forName("org.apache.iotdb.jdbc.IoTDBDriver");
     try (Connection connection =
             DriverManager.getConnection(
-                "jdbc:iotdb://127.0.0.1:6667?version=V_1_0", "root", "IoTDB@2011");
+                "jdbc:iotdb://127.0.0.1:6667?version=V_1_0", "root", "root");
         Statement statement = connection.createStatement()) {
 
       // set JDBC fetchSize

diff --git a/example/jdbc/src/main/java/org/apache/iotdb/TableModelJDBCExample.java b/example/jdbc/src/main/java/org/apache/iotdb/TableModelJDBCExample.java
@@ -41,7 +41,7 @@ public static void main(String[] args) throws ClassNotFoundException, SQLExcepti
     // don't specify database in url
     try (Connection connection =
             DriverManager.getConnection(
-                "jdbc:iotdb://127.0.0.1:6667?sql_dialect=table", "root", "IoTDB@2011");
+                "jdbc:iotdb://127.0.0.1:6667?sql_dialect=table", "root", "root");
         Statement statement = connection.createStatement()) {
 
       statement.execute("CREATE DATABASE test1");
@@ -82,7 +82,7 @@ public static void main(String[] args) throws ClassNotFoundException, SQLExcepti
     // specify database in url
     try (Connection connection =
             DriverManager.getConnection(
-                "jdbc:iotdb://127.0.0.1:6667/test1?sql_dialect=table", "root", "IoTDB@2011");
+                "jdbc:iotdb://127.0.0.1:6667/test1?sql_dialect=table", "root", "root");
         Statement statement = connection.createStatement()) {
       // show tables from current database test1
       try (ResultSet resultSet = statement.executeQuery("SHOW TABLES")) {

diff --git a/example/mqtt/src/main/java/org/apache/iotdb/mqtt/MQTTClient.java b/example/mqtt/src/main/java/org/apache/iotdb/mqtt/MQTTClient.java
@@ -32,7 +32,7 @@ public static void main(String[] args) throws Exception {
     MQTT mqtt = new MQTT();
     mqtt.setHost("127.0.0.1", 1883);
     mqtt.setUserName("root");
-    mqtt.setPassword("IoTDB@2011");
+    mqtt.setPassword("root");
     mqtt.setConnectAttemptsMax(3);
     mqtt.setReconnectDelay(10);
 

diff --git a/example/odbc/README.md b/example/odbc/README.md
@@ -63,7 +63,7 @@ Then, you can see the output `iotdb-jdbc-1.3.2-SNAPSHOT-jar-with-dependencies.ja
        | Driver Class        | org.apache.iotdb.jdbc.IoTDBDriver                         | org.apache.iotdb.jdbc.IoTDBDriver                                                                                  |
        | JDBC driver file(s) | The path of IoTDB JDBC jar-with-dependencies              | C:\Users\13361\Documents\GitHub\iotdb\iotdb-client\jdbc\target\iotdb-jdbc-1.3.2-SNAPSHOT-jar-with-dependencies.jar |
        | User name           | IoTDB's user name                                         | root                                                                                                               |
-       | User password       | IoTDB's password                                          | IoTDB@2011                                                                                                         |
+       | User password       | IoTDB's password                                          | root                                                                                                         |
 
        ![ODBC_CONNECTION.png](https://alioss.timecho.com/upload/ODBC_CONNECTION.png)
 

diff --git a/example/pipe-opc-ua-sink/src/main/java/org/apache/iotdb/opcua/IoTDBKeyStoreLoaderClient.java b/example/pipe-opc-ua-sink/src/main/java/org/apache/iotdb/opcua/IoTDBKeyStoreLoaderClient.java
@@ -42,7 +42,7 @@ class IoTDBKeyStoreLoaderClient {
       Pattern.compile("^(([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.){3}([01]?\\d\\d?|2[0-4]\\d|25[0-5])$");
 
   private static final String CLIENT_ALIAS = "client-ai";
-  private static final char[] PASSWORD = "IoTDB@2011".toCharArray();
+  private static final char[] PASSWORD = "root".toCharArray();
 
   private X509Certificate[] clientCertificateChain;
   private X509Certificate clientCertificate;

diff --git a/example/rest-java-example/src/main/java/org/apache/iotdb/HttpExample.java b/example/rest-java-example/src/main/java/org/apache/iotdb/HttpExample.java
@@ -83,7 +83,7 @@ private HttpPost getHttpPost(String url) {
     HttpPost httpPost = new HttpPost(url);
     httpPost.addHeader("Content-type", "application/json; charset=utf-8");
     httpPost.setHeader("Accept", "application/json");
-    String authorization = getAuthorization("root", "IoTDB@2011");
+    String authorization = getAuthorization("root", "root");
     httpPost.setHeader("Authorization", authorization);
     return httpPost;
   }

diff --git a/example/rest-java-example/src/main/java/org/apache/iotdb/HttpsExample.java b/example/rest-java-example/src/main/java/org/apache/iotdb/HttpsExample.java
@@ -83,7 +83,7 @@ private HttpPost getHttpPost(String url) {
     HttpPost httpPost = new HttpPost(url);
     httpPost.addHeader("Content-type", "application/json; charset=utf-8");
     httpPost.setHeader("Accept", "application/json");
-    String authorization = getAuthorization("root", "IoTDB@2011");
+    String authorization = getAuthorization("root", "root");
     httpPost.setHeader("Authorization", authorization);
     return httpPost;
   }

diff --git a/example/rest-java-example/src/main/java/org/apache/iotdb/TableHttpExample.java b/example/rest-java-example/src/main/java/org/apache/iotdb/TableHttpExample.java
@@ -82,7 +82,7 @@ private HttpPost getHttpPost(String url) {
     HttpPost httpPost = new HttpPost(url);
     httpPost.addHeader("Content-type", "application/json; charset=utf-8");
     httpPost.setHeader("Accept", "application/json");
-    String authorization = getAuthorization("root", "IoTDB@2011");
+    String authorization = getAuthorization("root", "root");
     httpPost.setHeader("Authorization", authorization);
     return httpPost;
   }

diff --git a/example/rest-java-example/src/main/java/org/apache/iotdb/TableHttpsExample.java b/example/rest-java-example/src/main/java/org/apache/iotdb/TableHttpsExample.java
@@ -82,7 +82,7 @@ private HttpPost getHttpPost(String url) {
     HttpPost httpPost = new HttpPost(url);
     httpPost.addHeader("Content-type", "application/json; charset=utf-8");
     httpPost.setHeader("Accept", "application/json");
-    String authorization = getAuthorization("root", "IoTDB@2011");
+    String authorization = getAuthorization("root", "root");
     httpPost.setHeader("Authorization", authorization);
     return httpPost;
   }

diff --git a/example/schema/src/main/java/org/apache/iotdb/schema/PathCheckExample.java b/example/schema/src/main/java/org/apache/iotdb/schema/PathCheckExample.java
@@ -46,8 +46,7 @@
  *
  * <p>The usage of export-csv.sh can be found in the <a
  * href="https://iotdb.apache.org/zh/UserGuide/V1.2.x/Tools-System/Import-Export-Tool.html#csv%E5%AF%BC%E5%85%A5%E5%AF%BC%E5%87%BA%E5%B7%A5%E5%85%B7">documentation</a>.
- * For example: ./export-csv.sh -h 127.0.0.1 -p 6667 -u root -pw IoTDB@2011 -td . -q "show
- * timeseries"
+ * For example: ./export-csv.sh -h 127.0.0.1 -p 6667 -u root -pw root -td . -q "show timeseries"
  */
 public class PathCheckExample {
   private static final List<String> INPUT_LIST = new ArrayList<>();

diff --git a/example/session/src/main/java/org/apache/iotdb/AlignedTimeseriesSessionExample.java b/example/session/src/main/java/org/apache/iotdb/AlignedTimeseriesSessionExample.java
@@ -57,7 +57,7 @@ public class AlignedTimeseriesSessionExample {
 
   public static void main(String[] args)
       throws IoTDBConnectionException, StatementExecutionException {
-    session = new Session("127.0.0.1", 6667, "root", "IoTDB@2011");
+    session = new Session("127.0.0.1", 6667, "root", "root");
     session.open(false);
 
     // set session fetchSize

diff --git a/example/session/src/main/java/org/apache/iotdb/DataMigrationExample.java b/example/session/src/main/java/org/apache/iotdb/DataMigrationExample.java
@@ -75,8 +75,8 @@ public static void main(String[] args)
       path = args[0];
     }
 
-    readerPool = new SessionPool("127.0.0.1", 6667, "root", "IoTDB@2011", CONCURRENCY);
-    writerPool = new SessionPool("127.0.0.1", 6668, "root", "IoTDB@2011", CONCURRENCY);
+    readerPool = new SessionPool("127.0.0.1", 6667, "root", "root", CONCURRENCY);
+    writerPool = new SessionPool("127.0.0.1", 6668, "root", "root", CONCURRENCY);
 
     SessionDataSetWrapper deviceDataSet = readerPool.executeQueryStatement("count devices " + path);
     DataIterator deviceIter = deviceDataSet.iterator();

diff --git a/example/session/src/main/java/org/apache/iotdb/HybridTimeseriesSessionExample.java b/example/session/src/main/java/org/apache/iotdb/HybridTimeseriesSessionExample.java
@@ -50,7 +50,7 @@ public class HybridTimeseriesSessionExample {
 
   public static void main(String[] args)
       throws IoTDBConnectionException, StatementExecutionException {
-    session = new Session("127.0.0.1", 6667, "root", "IoTDB@2011");
+    session = new Session("127.0.0.1", 6667, "root", "root");
     session.open(false);
 
     // set session fetchSize

diff --git a/example/session/src/main/java/org/apache/iotdb/SessionConcurrentExample.java b/example/session/src/main/java/org/apache/iotdb/SessionConcurrentExample.java
@@ -53,7 +53,7 @@ public class SessionConcurrentExample {
   public static void main(String[] args)
       throws IoTDBConnectionException, StatementExecutionException, IOException {
 
-    try (Session session = new Session("127.0.0.1", 6667, "root", "IoTDB@2011")) {
+    try (Session session = new Session("127.0.0.1", 6667, "root", "root")) {
       session.open(false);
       createTemplate(session);
     } catch (Exception e) {
@@ -80,7 +80,7 @@ public static void main(String[] args)
 
   private static void concurrentOperation(CountDownLatch latch, int currentIndex) {
 
-    Session session = new Session("127.0.0.1", 6667, "root", "IoTDB@2011");
+    Session session = new Session("127.0.0.1", 6667, "root", "root");
     try {
       session.open(false);
     } catch (IoTDBConnectionException e) {

diff --git a/example/session/src/main/java/org/apache/iotdb/SessionExample.java b/example/session/src/main/java/org/apache/iotdb/SessionExample.java
@@ -73,7 +73,7 @@ public static void main(String[] args)
             .host(LOCAL_HOST)
             .port(6667)
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .version(Version.V_1_0)
             .build();
     session.open(false);
@@ -112,7 +112,7 @@ public static void main(String[] args)
     //    deleteTimeseries();
     //    setTimeout();
 
-    sessionEnableRedirect = new Session(LOCAL_HOST, 6667, "root", "IoTDB@2011");
+    sessionEnableRedirect = new Session(LOCAL_HOST, 6667, "root", "root");
     sessionEnableRedirect.setEnableQueryRedirection(true);
     sessionEnableRedirect.open(false);
 
@@ -820,7 +820,7 @@ private static void nonQuery() throws IoTDBConnectionException, StatementExecuti
   }
 
   private static void setTimeout() throws IoTDBConnectionException {
-    try (Session tempSession = new Session(LOCAL_HOST, 6667, "root", "IoTDB@2011", 10000, 20000)) {
+    try (Session tempSession = new Session(LOCAL_HOST, 6667, "root", "root", 10000, 20000)) {
       tempSession.setQueryTimeout(60000);
     }
   }

diff --git a/example/session/src/main/java/org/apache/iotdb/SessionPoolExample.java b/example/session/src/main/java/org/apache/iotdb/SessionPoolExample.java
@@ -48,7 +48,7 @@ private static void constructCustomSessionPool() {
             .host("127.0.0.1")
             .port(6667)
             .user("root")
-            .password("IoTDB@2011")
+            .password("root")
             .maxSize(3)
             .build();
   }
@@ -62,7 +62,7 @@ private static void constructRedirectSessionPool() {
         new SessionPool.Builder()
             .nodeUrls(nodeUrls)
             .user("root")
-            .password("IoTDB@2011")
+            .password("root")
             .maxSize(3)
             .build();
   }

diff --git a/example/session/src/main/java/org/apache/iotdb/SubscriptionSessionExample.java b/example/session/src/main/java/org/apache/iotdb/SubscriptionSessionExample.java
@@ -74,7 +74,7 @@ private static void prepareData() throws Exception {
             .host(HOST)
             .port(PORT)
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .version(Version.V_1_0)
             .build();
     session.open(false);
@@ -103,7 +103,7 @@ private static void dataQuery() throws Exception {
             .host(HOST)
             .port(PORT)
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .version(Version.V_1_0)
             .build();
     session.open(false);

diff --git a/example/session/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java b/example/session/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
@@ -84,7 +84,7 @@ public static void main(String[] args)
             .host(LOCAL_HOST)
             .port(6667)
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .version(Version.V_1_0)
             .build();
     session.open(false);

diff --git a/example/session/src/main/java/org/apache/iotdb/TableModelSessionExample.java b/example/session/src/main/java/org/apache/iotdb/TableModelSessionExample.java
@@ -45,7 +45,7 @@ public static void main(String[] args) {
         new TableSessionBuilder()
             .nodeUrls(Collections.singletonList(LOCAL_URL))
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .build()) {
 
       session.executeNonQueryStatement("CREATE DATABASE test1");
@@ -140,7 +140,7 @@ public static void main(String[] args) {
         new TableSessionBuilder()
             .nodeUrls(Collections.singletonList(LOCAL_URL))
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .database("test1")
             .build()) {
 

diff --git a/example/session/src/main/java/org/apache/iotdb/TableModelSessionPoolExample.java b/example/session/src/main/java/org/apache/iotdb/TableModelSessionPoolExample.java
@@ -46,7 +46,7 @@ public static void main(String[] args) {
         new TableSessionPoolBuilder()
             .nodeUrls(Collections.singletonList(LOCAL_URL))
             .user("root")
-            .password("IoTDB@2011")
+            .password("root")
             .maxSize(1)
             .build();
 
@@ -159,7 +159,7 @@ public static void main(String[] args) {
         new TableSessionPoolBuilder()
             .nodeUrls(Collections.singletonList(LOCAL_URL))
             .user("root")
-            .password("IoTDB@2011")
+            .password("root")
             .maxSize(1)
             .database("test1")
             .build();

diff --git a/example/session/src/main/java/org/apache/iotdb/TableModelSubscriptionSessionExample.java b/example/session/src/main/java/org/apache/iotdb/TableModelSubscriptionSessionExample.java
@@ -103,7 +103,7 @@ private static void dataSubscription() throws Exception {
             .host("127.0.0.1")
             .port(6667)
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .build()) {
       final Properties config = new Properties();
       config.put(TopicConstant.DATABASE_KEY, "db.*");
@@ -151,7 +151,7 @@ private static void dataSubscription() throws Exception {
               .host("127.0.0.1")
               .port(6667)
               .username("root")
-              .password("IoTDB@2011")
+              .password("root")
               .build()) {
         session.getTopics().forEach((System.out::println));
         session.getSubscriptions().forEach((System.out::println));
@@ -166,7 +166,7 @@ public static void main(final String[] args) throws Exception {
         new TableSessionBuilder()
             .nodeUrls(Collections.singletonList(HOST + ":" + PORT))
             .username("root")
-            .password("IoTDB@2011")
+            .password("root")
             .build()) {
       createDataBaseAndTable(session, "db1", "test1");
       createDataBaseAndTable(session, "db1", "test2");

diff --git a/example/session/src/main/java/org/apache/iotdb/TabletExample.java b/example/session/src/main/java/org/apache/iotdb/TabletExample.java
@@ -130,7 +130,7 @@ private static Map<String, ArrayList<Object>> loadCSVData(
    */
   public static void main(String[] args) throws Exception {
 
-    try (Session session = new Session("127.0.0.1", 6667, "root", "IoTDB@2011")) {
+    try (Session session = new Session("127.0.0.1", 6667, "root", "root")) {
       session.open();
       String dataFileName = "sample.csv";
       int rowSize = 10000;