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justinchen pushed a commit to branch clean
in repository https://gitbox.apache.org/repos/asf/iotdb.git


The following commit(s) were added to refs/heads/clean by this push:
     new 2d9e40e7172 partial
2d9e40e7172 is described below

commit 2d9e40e7172d3506f4d7c8f1fcb859e85d9a8b4d
Author: Caideyipi <[email protected]>
AuthorDate: Thu Jan 8 12:22:19 2026 +0800

    partial
---
 .../iotdb/SyntaxConventionRelatedExample.java      | 16 ++---
 .../iotdb/AlignedTimeseriesSessionExample.java     | 16 ++---
 .../iotdb/HybridTimeseriesSessionExample.java      | 12 ++--
 .../main/java/org/apache/iotdb/SessionExample.java | 84 +++++++++++-----------
 .../iotdb/SyntaxConventionRelatedExample.java      | 24 +++----
 .../session/it/IoTDBSessionAlignedInsertIT.java    | 46 ++++++------
 6 files changed, 99 insertions(+), 99 deletions(-)

diff --git 
a/example/jdbc/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
 
b/example/jdbc/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
index 2042ce8e725..4d1ea498ef0 100644
--- 
a/example/jdbc/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
+++ 
b/example/jdbc/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
@@ -37,28 +37,28 @@ public class SyntaxConventionRelatedExample {
    * when using session API, path is represented using String. The path should 
be written as
    * "root.db1.select".
    */
-  private static final String ROOT_SG1_KEYWORD_EXAMPLE = "root.db1.select";
+  private static final String ROOT_DB1_KEYWORD_EXAMPLE = "root.db1.select";
 
   /**
    * if you want to create a time series named root.db1.111, a possible SQL 
statement would be like:
    * create timeseries root.db1.`111` with datatype=FLOAT, encoding=RLE The 
path should be written
    * as "root.db1.`111`".
    */
-  private static final String ROOT_SG1_DIGITS_EXAMPLE = "root.db1.`111`";
+  private static final String ROOT_DB1_DIGITS_EXAMPLE = "root.db1.`111`";
 
   /**
    * if you want to create a time series named root.db1.`a"b'c``, a possible 
SQL statement would be
    * like: create timeseries root.db1.`a"b'c``` with datatype=FLOAT, 
encoding=RLE The path should be
    * written as "root.db1.`a"b`c```".
    */
-  private static final String ROOT_SG1_SPECIAL_CHARACTER_EXAMPLE = 
"root.db1.`a\"b'c```";
+  private static final String ROOT_DB1_SPECIAL_CHARACTER_EXAMPLE = 
"root.db1.`a\"b'c```";
 
   /**
    * if you want to create a time series named root.db1.a, a possible SQL 
statement would be like:
    * create timeseries root.db1.a with datatype=FLOAT, encoding=RLE The path 
should be written as
    * "root.db1.a".
    */
-  private static final String ROOT_SG1_NORMAL_NODE_EXAMPLE = "root.db1.a";
+  private static final String ROOT_DB1_NORMAL_NODE_EXAMPLE = "root.db1.a";
 
   public static final String CREATE =
       "CREATE TIMESERIES %s WITH DATATYPE=INT64, ENCODING=RLE, 
COMPRESSOR=SNAPPY";
@@ -78,10 +78,10 @@ public class SyntaxConventionRelatedExample {
       // create time series
 
       statement.execute(String.format("CREATE DATABASE %s", DEVICE));
-      statement.execute(String.format(CREATE, ROOT_SG1_DIGITS_EXAMPLE));
-      statement.execute(String.format(CREATE, ROOT_SG1_KEYWORD_EXAMPLE));
-      statement.execute(String.format(CREATE, ROOT_SG1_NORMAL_NODE_EXAMPLE));
-      statement.execute(String.format(CREATE, 
ROOT_SG1_SPECIAL_CHARACTER_EXAMPLE));
+      statement.execute(String.format(CREATE, ROOT_DB1_DIGITS_EXAMPLE));
+      statement.execute(String.format(CREATE, ROOT_DB1_KEYWORD_EXAMPLE));
+      statement.execute(String.format(CREATE, ROOT_DB1_NORMAL_NODE_EXAMPLE));
+      statement.execute(String.format(CREATE, 
ROOT_DB1_SPECIAL_CHARACTER_EXAMPLE));
 
       // show timeseries
       ResultSet resultSet = statement.executeQuery("show timeseries 
root.db1.*");
diff --git 
a/example/session/src/main/java/org/apache/iotdb/AlignedTimeseriesSessionExample.java
 
b/example/session/src/main/java/org/apache/iotdb/AlignedTimeseriesSessionExample.java
index ea135cd89e3..6e459de589b 100644
--- 
a/example/session/src/main/java/org/apache/iotdb/AlignedTimeseriesSessionExample.java
+++ 
b/example/session/src/main/java/org/apache/iotdb/AlignedTimeseriesSessionExample.java
@@ -311,7 +311,7 @@ public class AlignedTimeseriesSessionExample {
     alias.add(null);
 
     session.createAlignedTimeseries(
-        ROOT_SG1_D1,
+        ROOT_DB1_D1,
         measurements,
         dataTypes,
         encodings,
@@ -385,7 +385,7 @@ public class AlignedTimeseriesSessionExample {
     schemaList.add(new MeasurementSchema("s2", TSDataType.INT32));
 
 <<<<<<< refs/remotes/upstream/clean
-    Tablet tablet = new Tablet(ROOT_SG1_D1_VECTOR2, schemaList);
+    Tablet tablet = new Tablet(ROOT_DB1_D1_VECTOR2, schemaList);
 =======
     Tablet tablet = new Tablet(ROOT_DB1_D1_VECTOR2, schemaList);
     long[] timestamps = tablet.timestamps;
@@ -645,14 +645,14 @@ public class AlignedTimeseriesSessionExample {
     schemaList3.add(new MeasurementSchema("s1", TSDataType.INT64));
     schemaList3.add(new MeasurementSchema("s2", TSDataType.INT64));
 
-    Tablet tablet1 = new Tablet(ROOT_SG2_D1_VECTOR6, schemaList1, 100);
-    Tablet tablet2 = new Tablet(ROOT_SG2_D1_VECTOR7, schemaList2, 100);
-    Tablet tablet3 = new Tablet(ROOT_SG2_D1_VECTOR8, schemaList3, 100);
+    Tablet tablet1 = new Tablet(ROOT_DB2_D1_VECTOR6, schemaList1, 100);
+    Tablet tablet2 = new Tablet(ROOT_DB2_D1_VECTOR7, schemaList2, 100);
+    Tablet tablet3 = new Tablet(ROOT_DB2_D1_VECTOR8, schemaList3, 100);
 
     Map<String, Tablet> tabletMap = new HashMap<>();
-    tabletMap.put(ROOT_SG2_D1_VECTOR6, tablet1);
-    tabletMap.put(ROOT_SG2_D1_VECTOR7, tablet2);
-    tabletMap.put(ROOT_SG2_D1_VECTOR8, tablet3);
+    tabletMap.put(ROOT_DB2_D1_VECTOR6, tablet1);
+    tabletMap.put(ROOT_DB2_D1_VECTOR7, tablet2);
+    tabletMap.put(ROOT_DB2_D1_VECTOR8, tablet3);
 
     // Method 1 to add tablet data
     long timestamp = System.currentTimeMillis();
diff --git 
a/example/session/src/main/java/org/apache/iotdb/HybridTimeseriesSessionExample.java
 
b/example/session/src/main/java/org/apache/iotdb/HybridTimeseriesSessionExample.java
index eea0fe3cce6..2e4d052e931 100644
--- 
a/example/session/src/main/java/org/apache/iotdb/HybridTimeseriesSessionExample.java
+++ 
b/example/session/src/main/java/org/apache/iotdb/HybridTimeseriesSessionExample.java
@@ -44,9 +44,9 @@ public class HybridTimeseriesSessionExample {
       LoggerFactory.getLogger(HybridTimeseriesSessionExample.class);
 
   private static Session session;
-  private static final String ROOT_SG1_ALIGNEDDEVICE = 
"root.db_1.aligned_device";
-  private static final String ROOT_SG1_D1 = "root.db_1.d1";
-  private static final String ROOT_SG1_D2 = "root.db_1.d2";
+  private static final String ROOT_DB1_ALIGNEDDEVICE = 
"root.db_1.aligned_device";
+  private static final String ROOT_DB1_D1 = "root.db_1.d1";
+  private static final String ROOT_DB1_D2 = "root.db_1.d2";
 
   public static void main(String[] args)
       throws IoTDBConnectionException, StatementExecutionException {
@@ -56,9 +56,9 @@ public class HybridTimeseriesSessionExample {
     // set session fetchSize
     session.setFetchSize(10000);
 
-    insertRecord(ROOT_SG1_D2, 0, 100);
+    insertRecord(ROOT_DB1_D2, 0, 100);
     insertTabletWithAlignedTimeseriesMethod(0, 100);
-    insertRecord(ROOT_SG1_D1, 0, 100);
+    insertRecord(ROOT_DB1_D1, 0, 100);
     session.executeNonQueryStatement("flush");
     selectTest();
 
@@ -84,7 +84,7 @@ public class HybridTimeseriesSessionExample {
     schemaList.add(new MeasurementSchema("s1", TSDataType.INT64));
     schemaList.add(new MeasurementSchema("s2", TSDataType.INT32));
 
-    Tablet tablet = new Tablet(ROOT_SG1_ALIGNEDDEVICE, schemaList);
+    Tablet tablet = new Tablet(ROOT_DB1_ALIGNEDDEVICE, schemaList);
     long timestamp = minTime;
 
     for (long row = minTime; row < maxTime; row++) {
diff --git a/example/session/src/main/java/org/apache/iotdb/SessionExample.java 
b/example/session/src/main/java/org/apache/iotdb/SessionExample.java
index ab3962604c4..e0484e96d56 100644
--- a/example/session/src/main/java/org/apache/iotdb/SessionExample.java
+++ b/example/session/src/main/java/org/apache/iotdb/SessionExample.java
@@ -54,13 +54,13 @@ public class SessionExample {
 
   private static Session session;
   private static Session sessionEnableRedirect;
-  private static final String ROOT_SG1_D1_S1 = "root.db1.d1.s1";
-  private static final String ROOT_SG1_D1_S2 = "root.db1.d1.s2";
-  private static final String ROOT_SG1_D1_S3 = "root.db1.d1.s3";
-  private static final String ROOT_SG1_D1_S4 = "root.db1.d1.s4";
-  private static final String ROOT_SG1_D1_S5 = "root.db1.d1.s5";
-  private static final String ROOT_SG1_D1 = "root.db1.d1";
-  private static final String ROOT_SG1 = "root.db1";
+  private static final String ROOT_DB1_D1_S1 = "root.db1.d1.s1";
+  private static final String ROOT_DB1_D1_S2 = "root.db1.d1.s2";
+  private static final String ROOT_DB1_D1_S3 = "root.db1.d1.s3";
+  private static final String ROOT_DB1_D1_S4 = "root.db1.d1.s4";
+  private static final String ROOT_DB1_D1_S5 = "root.db1.d1.s5";
+  private static final String ROOT_DB1_D1 = "root.db1.d1";
+  private static final String ROOT_DB1 = "root.db1";
   private static final String LOCAL_HOST = "127.0.0.1";
   public static final String SELECT_D1 = "select * from root.db1.d1";
 
@@ -150,27 +150,27 @@ public class SessionExample {
   private static void createTimeseries()
       throws IoTDBConnectionException, StatementExecutionException {
 
-    if (!session.checkTimeseriesExists(ROOT_SG1_D1_S1)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_D1_S1)) {
       session.createTimeseries(
-          ROOT_SG1_D1_S1, TSDataType.INT64, TSEncoding.RLE, 
CompressionType.SNAPPY);
+          ROOT_DB1_D1_S1, TSDataType.INT64, TSEncoding.RLE, 
CompressionType.SNAPPY);
     }
-    if (!session.checkTimeseriesExists(ROOT_SG1_D1_S2)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_D1_S2)) {
       session.createTimeseries(
-          ROOT_SG1_D1_S2, TSDataType.INT64, TSEncoding.RLE, 
CompressionType.SNAPPY);
+          ROOT_DB1_D1_S2, TSDataType.INT64, TSEncoding.RLE, 
CompressionType.SNAPPY);
     }
-    if (!session.checkTimeseriesExists(ROOT_SG1_D1_S3)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_D1_S3)) {
       session.createTimeseries(
-          ROOT_SG1_D1_S3, TSDataType.INT64, TSEncoding.RLE, 
CompressionType.SNAPPY);
+          ROOT_DB1_D1_S3, TSDataType.INT64, TSEncoding.RLE, 
CompressionType.SNAPPY);
     }
 
     // create timeseries with tags and attributes
-    if (!session.checkTimeseriesExists(ROOT_SG1_D1_S4)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_D1_S4)) {
       Map<String, String> tags = new HashMap<>();
       tags.put("tag1", "v1");
       Map<String, String> attributes = new HashMap<>();
       attributes.put("description", "v1");
       session.createTimeseries(
-          ROOT_SG1_D1_S4,
+          ROOT_DB1_D1_S4,
           TSDataType.INT64,
           TSEncoding.RLE,
           CompressionType.SNAPPY,
@@ -181,7 +181,7 @@ public class SessionExample {
     }
 
     // create timeseries with SDT property, SDT will take place when flushing
-    if (!session.checkTimeseriesExists(ROOT_SG1_D1_S5)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_D1_S5)) {
       // COMPDEV is required
       // COMPMAXTIME and COMPMINTIME are optional and their unit is ms
       Map<String, String> props = new HashMap<>();
@@ -190,7 +190,7 @@ public class SessionExample {
       props.put("COMPMINTIME", "2");
       props.put("COMPMAXTIME", "10");
       session.createTimeseries(
-          ROOT_SG1_D1_S5,
+          ROOT_DB1_D1_S5,
           TSDataType.INT64,
           TSEncoding.RLE,
           CompressionType.SNAPPY,
@@ -308,7 +308,7 @@ public class SessionExample {
   }
 
   private static void insertRecord() throws IoTDBConnectionException, 
StatementExecutionException {
-    String deviceId = ROOT_SG1_D1;
+    String deviceId = ROOT_DB1_D1;
     List<String> measurements = new ArrayList<>();
     List<TSDataType> types = new ArrayList<>();
     measurements.add("s1");
@@ -354,7 +354,7 @@ public class SessionExample {
 
   private static void insertStrRecord()
       throws IoTDBConnectionException, StatementExecutionException {
-    String deviceId = ROOT_SG1_D1;
+    String deviceId = ROOT_DB1_D1;
     List<String> measurements = new ArrayList<>();
     measurements.add("s1");
     measurements.add("s2");
@@ -371,7 +371,7 @@ public class SessionExample {
 
   private static void insertRecordInObject()
       throws IoTDBConnectionException, StatementExecutionException {
-    String deviceId = ROOT_SG1_D1;
+    String deviceId = ROOT_DB1_D1;
     List<String> measurements = new ArrayList<>();
     List<TSDataType> types = new ArrayList<>();
     measurements.add("s1");
@@ -387,7 +387,7 @@ public class SessionExample {
   }
 
   private static void insertRecords() throws IoTDBConnectionException, 
StatementExecutionException {
-    String deviceId = ROOT_SG1_D1;
+    String deviceId = ROOT_DB1_D1;
     List<String> measurements = new ArrayList<>();
     measurements.add("s1");
     measurements.add("s2");
@@ -447,7 +447,7 @@ public class SessionExample {
     schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
     schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));
 
-    Tablet tablet = new Tablet(ROOT_SG1_D1, schemaList, 100);
+    Tablet tablet = new Tablet(ROOT_DB1_D1, schemaList, 100);
 
     long timestamp = System.currentTimeMillis();
 
@@ -488,7 +488,7 @@ public class SessionExample {
     schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
     schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));
 
-    Tablet tablet = new Tablet(ROOT_SG1_D1, schemaList, 100);
+    Tablet tablet = new Tablet(ROOT_DB1_D1, schemaList, 100);
 
     long timestamp = System.currentTimeMillis();
 
@@ -543,7 +543,7 @@ public class SessionExample {
     schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
     schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));
 
-    Tablet tablet = new Tablet(ROOT_SG1_D1, schemaList, 100);
+    Tablet tablet = new Tablet(ROOT_DB1_D1, schemaList, 100);
 
     insertTablet1(schemaList, tablet);
   }
@@ -583,12 +583,12 @@ public class SessionExample {
     schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
     schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));
 
-    Tablet tablet1 = new Tablet(ROOT_SG1_D1, schemaList, 100);
+    Tablet tablet1 = new Tablet(ROOT_DB1_D1, schemaList, 100);
     Tablet tablet2 = new Tablet("root.db1.d2", schemaList, 100);
     Tablet tablet3 = new Tablet("root.sg1.d3", schemaList, 100);
 
     Map<String, Tablet> tabletMap = new HashMap<>();
-    tabletMap.put(ROOT_SG1_D1, tablet1);
+    tabletMap.put(ROOT_DB1_D1, tablet1);
     tabletMap.put("root.sg1.d2", tablet2);
     tabletMap.put("root.sg1.d3", tablet3);
 
@@ -675,7 +675,7 @@ public class SessionExample {
   }
 
   private static void deleteData() throws IoTDBConnectionException, 
StatementExecutionException {
-    String path = ROOT_SG1_D1_S1;
+    String path = ROOT_DB1_D1_S1;
     long deleteTime = 99;
     session.deleteData(path, deleteTime);
   }
@@ -683,9 +683,9 @@ public class SessionExample {
   private static void deleteTimeseries()
       throws IoTDBConnectionException, StatementExecutionException {
     List<String> paths = new ArrayList<>();
-    paths.add(ROOT_SG1_D1_S1);
-    paths.add(ROOT_SG1_D1_S2);
-    paths.add(ROOT_SG1_D1_S3);
+    paths.add(ROOT_DB1_D1_S1);
+    paths.add(ROOT_DB1_D1_S2);
+    paths.add(ROOT_DB1_D1_S3);
     session.deleteTimeseries(paths);
   }
 
@@ -740,9 +740,9 @@ public class SessionExample {
 
   private static void rawDataQuery() throws IoTDBConnectionException, 
StatementExecutionException {
     List<String> paths = new ArrayList<>();
-    paths.add(ROOT_SG1_D1_S1);
-    paths.add(ROOT_SG1_D1_S2);
-    paths.add(ROOT_SG1_D1_S3);
+    paths.add(ROOT_DB1_D1_S1);
+    paths.add(ROOT_DB1_D1_S2);
+    paths.add(ROOT_DB1_D1_S3);
     long startTime = 10L;
     long endTime = 200L;
     long timeOut = 60000;
@@ -754,9 +754,9 @@ public class SessionExample {
 
   private static void lastDataQuery() throws IoTDBConnectionException, 
StatementExecutionException {
     List<String> paths = new ArrayList<>();
-    paths.add(ROOT_SG1_D1_S1);
-    paths.add(ROOT_SG1_D1_S2);
-    paths.add(ROOT_SG1_D1_S3);
+    paths.add(ROOT_DB1_D1_S1);
+    paths.add(ROOT_DB1_D1_S2);
+    paths.add(ROOT_DB1_D1_S3);
     try (SessionDataSet dataSet = session.executeLastDataQuery(paths, 3, 
60000)) {
       printDataSet(dataSet);
     }
@@ -771,7 +771,7 @@ public class SessionExample {
     paths.add("s3");
     try (SessionDataSet dataSet =
         sessionEnableRedirect.executeLastDataQueryForOneDevice(
-            ROOT_SG1, ROOT_SG1_D1, paths, true)) {
+            ROOT_DB1, ROOT_DB1_D1, paths, true)) {
       printDataSet(dataSet);
     }
   }
@@ -789,9 +789,9 @@ public class SessionExample {
   private static void aggregationQuery()
       throws IoTDBConnectionException, StatementExecutionException {
     List<String> paths = new ArrayList<>();
-    paths.add(ROOT_SG1_D1_S1);
-    paths.add(ROOT_SG1_D1_S2);
-    paths.add(ROOT_SG1_D1_S3);
+    paths.add(ROOT_DB1_D1_S1);
+    paths.add(ROOT_DB1_D1_S2);
+    paths.add(ROOT_DB1_D1_S3);
 
     List<TAggregationType> aggregations = new ArrayList<>();
     aggregations.add(TAggregationType.COUNT);
@@ -804,8 +804,8 @@ public class SessionExample {
 
   private static void groupByQuery() throws IoTDBConnectionException, 
StatementExecutionException {
     List<String> paths = new ArrayList<>();
-    paths.add(ROOT_SG1_D1_S1);
-    paths.add(ROOT_SG1_D1_S2);
+    paths.add(ROOT_DB1_D1_S1);
+    paths.add(ROOT_DB1_D1_S2);
     paths.add(ROOT_SG1_D1_S3);
 
     List<TAggregationType> aggregations = new ArrayList<>();
diff --git 
a/example/session/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
 
b/example/session/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
index caa1dcbda6a..53066a214d7 100644
--- 
a/example/session/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
+++ 
b/example/session/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java
@@ -54,28 +54,28 @@ public class SyntaxConventionRelatedExample {
    * when using session API, path is represented using String. The path should 
be written as
    * "root.db1.select".
    */
-  private static final String ROOT_SG1_KEYWORD_EXAMPLE = "root.db1.select";
+  private static final String ROOT_DB1_KEYWORD_EXAMPLE = "root.db1.select";
 
   /**
    * if you want to create a time series named root.db1.111, a possible SQL 
statement would be like:
    * create timeseries root.db1.`111` with datatype=FLOAT, encoding=RLE The 
path should be written
    * as "root.db1.`111`".
    */
-  private static final String ROOT_SG1_DIGITS_EXAMPLE = "root.db1.`111`";
+  private static final String ROOT_DB1_DIGITS_EXAMPLE = "root.db1.`111`";
 
   /**
    * if you want to create a time series named root.db1.`a"b'c``, a possible 
SQL statement would be
    * like: create timeseries root.db1.`a"b'c``` with datatype=FLOAT, 
encoding=RLE The path should be
    * written as "root.db1.`a"b`c```".
    */
-  private static final String ROOT_SG1_SPECIAL_CHARACTER_EXAMPLE = 
"root.db1.`a\"b'c```";
+  private static final String ROOT_DB1_SPECIAL_CHARACTER_EXAMPLE = 
"root.db1.`a\"b'c```";
 
   /**
    * if you want to create a time series named root.db1.a, a possible SQL 
statement would be like:
    * create timeseries root.sg1.a with datatype=FLOAT, encoding=RLE The path 
should be written as
    * "root.sg1.a".
    */
-  private static final String ROOT_SG1_NORMAL_NODE_EXAMPLE = "root.sg1.a";
+  private static final String ROOT_DB1_NORMAL_NODE_EXAMPLE = "root.sg1.a";
 
   public static void main(String[] args)
       throws IoTDBConnectionException, StatementExecutionException {
@@ -133,24 +133,24 @@ public class SyntaxConventionRelatedExample {
 
   private static void createTimeSeries()
       throws IoTDBConnectionException, StatementExecutionException {
-    if (!session.checkTimeseriesExists(ROOT_SG1_KEYWORD_EXAMPLE)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_KEYWORD_EXAMPLE)) {
       session.createTimeseries(
-          ROOT_SG1_KEYWORD_EXAMPLE, TSDataType.FLOAT, TSEncoding.RLE, 
CompressionType.SNAPPY);
+          ROOT_DB1_KEYWORD_EXAMPLE, TSDataType.FLOAT, TSEncoding.RLE, 
CompressionType.SNAPPY);
     }
-    if (!session.checkTimeseriesExists(ROOT_SG1_DIGITS_EXAMPLE)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_DIGITS_EXAMPLE)) {
       session.createTimeseries(
-          ROOT_SG1_DIGITS_EXAMPLE, TSDataType.FLOAT, TSEncoding.RLE, 
CompressionType.SNAPPY);
+          ROOT_DB1_DIGITS_EXAMPLE, TSDataType.FLOAT, TSEncoding.RLE, 
CompressionType.SNAPPY);
     }
-    if (!session.checkTimeseriesExists(ROOT_SG1_SPECIAL_CHARACTER_EXAMPLE)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_SPECIAL_CHARACTER_EXAMPLE)) {
       session.createTimeseries(
-          ROOT_SG1_SPECIAL_CHARACTER_EXAMPLE,
+          ROOT_DB1_SPECIAL_CHARACTER_EXAMPLE,
           TSDataType.FLOAT,
           TSEncoding.RLE,
           CompressionType.SNAPPY);
     }
-    if (!session.checkTimeseriesExists(ROOT_SG1_NORMAL_NODE_EXAMPLE)) {
+    if (!session.checkTimeseriesExists(ROOT_DB1_NORMAL_NODE_EXAMPLE)) {
       session.createTimeseries(
-          ROOT_SG1_NORMAL_NODE_EXAMPLE, TSDataType.FLOAT, TSEncoding.RLE, 
CompressionType.SNAPPY);
+          ROOT_DB1_NORMAL_NODE_EXAMPLE, TSDataType.FLOAT, TSEncoding.RLE, 
CompressionType.SNAPPY);
     }
   }
 }
diff --git 
a/integration-test/src/test/java/org/apache/iotdb/session/it/IoTDBSessionAlignedInsertIT.java
 
b/integration-test/src/test/java/org/apache/iotdb/session/it/IoTDBSessionAlignedInsertIT.java
index 2340cf3f326..08858e0a53f 100644
--- 
a/integration-test/src/test/java/org/apache/iotdb/session/it/IoTDBSessionAlignedInsertIT.java
+++ 
b/integration-test/src/test/java/org/apache/iotdb/session/it/IoTDBSessionAlignedInsertIT.java
@@ -48,9 +48,9 @@ import static org.junit.Assert.fail;
 @Category({LocalStandaloneIT.class, ClusterIT.class})
 public class IoTDBSessionAlignedInsertIT {
 
-  private static final String ROOT_SG1_D1_VECTOR1 = "root.sg_1.d1.vector";
-  private static final String ROOT_SG1_D1 = "root.sg_1.d1";
-  private static final String ROOT_SG1_D2 = "root.sg_1.d2";
+  private static final String ROOT_DB1_D1_VECTOR1 = "root.sg_1.d1.vector";
+  private static final String ROOT_DB1_D1 = "root.sg_1.d1";
+  private static final String ROOT_DB1_D2 = "root.sg_1.d2";
   private static final double DELTA_DOUBLE = 1e-7d;
 
   @Before
@@ -72,8 +72,8 @@ public class IoTDBSessionAlignedInsertIT {
       SessionDataSet dataSet = session.executeQueryStatement("select * from 
root.sg_1.d1.vector");
       assertEquals(dataSet.getColumnNames().size(), 3);
       assertEquals(dataSet.getColumnNames().get(0), "Time");
-      assertEquals(dataSet.getColumnNames().get(1), ROOT_SG1_D1_VECTOR1 + 
".s1");
-      assertEquals(dataSet.getColumnNames().get(2), ROOT_SG1_D1_VECTOR1 + 
".s2");
+      assertEquals(dataSet.getColumnNames().get(1), ROOT_DB1_D1_VECTOR1 + 
".s1");
+      assertEquals(dataSet.getColumnNames().get(2), ROOT_DB1_D1_VECTOR1 + 
".s2");
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -116,12 +116,12 @@ public class IoTDBSessionAlignedInsertIT {
   @Test
   public void insertAlignedRecordTest() {
     try (ISession session = EnvFactory.getEnv().getSessionConnection()) {
-      insertAlignedRecord(session, ROOT_SG1_D1_VECTOR1);
+      insertAlignedRecord(session, ROOT_DB1_D1_VECTOR1);
       session.executeNonQueryStatement("flush");
       SessionDataSet dataSet = session.executeQueryStatement("select s2 from 
root.sg_1.d1.vector");
       assertEquals(2, dataSet.getColumnNames().size());
       assertEquals("Time", dataSet.getColumnNames().get(0));
-      assertEquals(dataSet.getColumnNames().get(1), ROOT_SG1_D1_VECTOR1 + 
".s2");
+      assertEquals(dataSet.getColumnNames().get(1), ROOT_DB1_D1_VECTOR1 + 
".s2");
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -140,12 +140,12 @@ public class IoTDBSessionAlignedInsertIT {
   @Test
   public void insertAlignedStringRecordTest() {
     try (ISession session = EnvFactory.getEnv().getSessionConnection()) {
-      insertAlignedStringRecord(session, ROOT_SG1_D1_VECTOR1);
+      insertAlignedStringRecord(session, ROOT_DB1_D1_VECTOR1);
       session.executeNonQueryStatement("flush");
       SessionDataSet dataSet = session.executeQueryStatement("select s2 from 
root.sg_1.d1.vector");
       assertEquals(2, dataSet.getColumnNames().size());
       assertEquals("Time", dataSet.getColumnNames().get(0));
-      assertEquals(ROOT_SG1_D1_VECTOR1 + ".s2", 
dataSet.getColumnNames().get(1));
+      assertEquals(ROOT_DB1_D1_VECTOR1 + ".s2", 
dataSet.getColumnNames().get(1));
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -164,12 +164,12 @@ public class IoTDBSessionAlignedInsertIT {
   @Test
   public void insertAlignedStringRecordsTest() {
     try (ISession session = EnvFactory.getEnv().getSessionConnection()) {
-      insertAlignedStringRecords(session, ROOT_SG1_D1_VECTOR1);
+      insertAlignedStringRecords(session, ROOT_DB1_D1_VECTOR1);
       session.executeNonQueryStatement("flush");
       SessionDataSet dataSet = session.executeQueryStatement("select s2 from 
root.sg_1.d1.vector");
       assertEquals(2, dataSet.getColumnNames().size());
       assertEquals("Time", dataSet.getColumnNames().get(0));
-      assertEquals(dataSet.getColumnNames().get(1), ROOT_SG1_D1_VECTOR1 + 
".s2");
+      assertEquals(dataSet.getColumnNames().get(1), ROOT_DB1_D1_VECTOR1 + 
".s2");
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -188,12 +188,12 @@ public class IoTDBSessionAlignedInsertIT {
   @Test
   public void insertAlignedRecordsTest() {
     try (ISession session = EnvFactory.getEnv().getSessionConnection()) {
-      insertAlignedRecords(session, ROOT_SG1_D1_VECTOR1);
+      insertAlignedRecords(session, ROOT_DB1_D1_VECTOR1);
       session.executeNonQueryStatement("flush");
       SessionDataSet dataSet = session.executeQueryStatement("select s2 from 
root.sg_1.d1.vector");
       assertEquals(2, dataSet.getColumnNames().size());
       assertEquals("Time", dataSet.getColumnNames().get(0));
-      assertEquals(dataSet.getColumnNames().get(1), ROOT_SG1_D1_VECTOR1 + 
".s2");
+      assertEquals(dataSet.getColumnNames().get(1), ROOT_DB1_D1_VECTOR1 + 
".s2");
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -212,12 +212,12 @@ public class IoTDBSessionAlignedInsertIT {
   @Test
   public void insertAlignedRecordsOfOneDeviceTest() {
     try (ISession session = EnvFactory.getEnv().getSessionConnection()) {
-      insertAlignedRecordsOfOneDevice(session, ROOT_SG1_D1_VECTOR1);
+      insertAlignedRecordsOfOneDevice(session, ROOT_DB1_D1_VECTOR1);
       session.executeNonQueryStatement("flush");
       SessionDataSet dataSet = session.executeQueryStatement("select s2 from 
root.sg_1.d1.vector");
       assertEquals(2, dataSet.getColumnNames().size());
       assertEquals("Time", dataSet.getColumnNames().get(0));
-      assertEquals(dataSet.getColumnNames().get(1), ROOT_SG1_D1_VECTOR1 + 
".s2");
+      assertEquals(dataSet.getColumnNames().get(1), ROOT_DB1_D1_VECTOR1 + 
".s2");
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -236,14 +236,14 @@ public class IoTDBSessionAlignedInsertIT {
   @Test
   public void nonAlignedSingleSelectTest() {
     try (ISession session = EnvFactory.getEnv().getSessionConnection()) {
-      insertNonAlignedRecord(session, ROOT_SG1_D1);
+      insertNonAlignedRecord(session, ROOT_DB1_D1);
       insertTabletWithAlignedTimeseriesMethod(session);
-      insertNonAlignedRecord(session, ROOT_SG1_D2);
+      insertNonAlignedRecord(session, ROOT_DB1_D2);
       session.executeNonQueryStatement("flush");
       SessionDataSet dataSet = session.executeQueryStatement("select s2 from 
root.sg_1.d1.vector");
       assertEquals(2, dataSet.getColumnNames().size());
       assertEquals("Time", dataSet.getColumnNames().get(0));
-      assertEquals(dataSet.getColumnNames().get(1), ROOT_SG1_D1_VECTOR1 + 
".s2");
+      assertEquals(dataSet.getColumnNames().get(1), ROOT_DB1_D1_VECTOR1 + 
".s2");
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -262,15 +262,15 @@ public class IoTDBSessionAlignedInsertIT {
   @Test
   public void nonAlignedVectorSelectTest() {
     try (ISession session = EnvFactory.getEnv().getSessionConnection()) {
-      insertNonAlignedRecord(session, ROOT_SG1_D1);
+      insertNonAlignedRecord(session, ROOT_DB1_D1);
       insertTabletWithAlignedTimeseriesMethod(session);
-      insertNonAlignedRecord(session, ROOT_SG1_D2);
+      insertNonAlignedRecord(session, ROOT_DB1_D2);
       session.executeNonQueryStatement("flush");
       SessionDataSet dataSet = session.executeQueryStatement("select * from 
root.sg_1.d1.vector");
       assertEquals(3, dataSet.getColumnNames().size());
       assertEquals("Time", dataSet.getColumnNames().get(0));
-      assertEquals(ROOT_SG1_D1_VECTOR1 + ".s1", 
dataSet.getColumnNames().get(1));
-      assertEquals(ROOT_SG1_D1_VECTOR1 + ".s2", 
dataSet.getColumnNames().get(2));
+      assertEquals(ROOT_DB1_D1_VECTOR1 + ".s1", 
dataSet.getColumnNames().get(1));
+      assertEquals(ROOT_DB1_D1_VECTOR1 + ".s2", 
dataSet.getColumnNames().get(2));
       long time = 0;
       while (dataSet.hasNext()) {
         RowRecord rowRecord = dataSet.next();
@@ -296,7 +296,7 @@ public class IoTDBSessionAlignedInsertIT {
     schemaList.add(new MeasurementSchema("s1", TSDataType.INT64));
     schemaList.add(new MeasurementSchema("s2", TSDataType.INT32));
 
-    Tablet tablet = new Tablet(ROOT_SG1_D1_VECTOR1, schemaList);
+    Tablet tablet = new Tablet(ROOT_DB1_D1_VECTOR1, schemaList);
     long timestamp = 0;
 
     for (long row = 0; row < 100; row++) {

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