@@ -19,6 +19,44 @@
 
 -->
 
+# Apache IoTDB 2.0.10
+
+## Features & Improvements
+
+- Data Query: Support schema-level and table-level storage space statistics
+- Data Query: Add DEBUG SQL capability and optimize the result set of Explain Analyze
+- Data Query: Support set operations (UNION/INTERSECT/EXCEPT) and Common Table Expressions (CTE) in the table model
+- Data Query: Add IF scalar function, binary functions and APPROX_PERCENTILE aggregate function for the table model
+- Data Query: Optimize display fields of the show queries command, add three new columns: client IP that initiates the query, timeout threshold, and total request waiting latency
+- Storage Management: Provide C-language driver SDK interfaces, including parameter binding, automatic failover for multi-node switching and other fault-tolerant capabilities
+- System Management: Add the capability to manually trigger node load balancing
+- System Management: Add progress query capability for the remove datanode operation
+- System Management: Introduce the show configuration statement to view cluster configuration information
+- System Management: Add statistics for the number of slow write requests
+- AI Management: Add two built-in models: Moirai2 and Toto
+- AI Management: Enable AINode to manage multiple models under the same model_type
+- AI Management: Support loading built-in models for CPU inference with isolated inference processes
+
+## Bugs
+
+- Fix the issue that partition tables get lost when leader switch happens on single-node ConfigNode
+- Fix the bug where configurations delivered via set configuration to a single DataNode take effect on all other DataNodes unexpectedly
+- Fix the occasional continuous accumulation of reservedSize for timeout-only queries across multiple devices in tree model, which triggers query errors after hitting the max capacity limit
+- Fix the parsing error in tree-model-to-table conversion logic when tree paths consist entirely of numeric characters
+- Correct abnormal output of show devices root.db.** when root.db itself is a device, making it display root.db properly
+- Fix the failure of kill query and query timeout mechanism when the client holds the connection open without fully consuming all result sets
+- Fix array index out-of-bounds error caused by null values in attribute fields on the receiver side, which blocks the data synchronization pipeline
+- Fix connection pool leakage exceptions in the C# client
+- Fix exceptions occurring in the C++ client when write redirection is enabled while dn_rpc_address is configured to 0.0.0.0 on DataNode server
+- Fix abnormal repeated broadcasting of deletion markers (Deletions) during the load operation
+- Fix the issue that rows with null inserted fields cannot be synchronized to the receiver in real-time data synchronization scenarios
+- Fix incorrect idempotency logic for out-of-order TTL-expired data on the synchronization receiver, which leads to repeated synchronization of expired data
+- Fix the problem that enable-send-tsfile-limit parameter cannot be manually configured for historical Pipes split from full-data Pipe tasks
+- Fix Pipe temporary stoppage triggered by insufficient memory of a single subtask within synchronization jobs
+- Fix the issue that modifying username/password of source or sink in write-back-sink model generates error logs and prevents data from being received on the sink side
+- Fix permission issue preventing non-root users from stopping the AINode process
+- Mitigate memory leaks that tend to occur during long-running continuous inference of models running on CPU
+
 # Apache IoTDB 2.0.8
 
 ## Features & Improvements
 
@@ -33,11 +33,17 @@ public class MultiEnvFactory {
   private static final List<BaseEnv> envList = new ArrayList<>();
   private static final Logger logger = IoTDBTestLogger.logger;
   private static String currentMethodName;
+  private static String currentClassName;
 
   private MultiEnvFactory() {
     // Empty constructor
   }
 
+  public static void setTestClassName(final String testClassName) {
+    currentClassName = testClassName;
+    envList.forEach(baseEnv -> baseEnv.setTestClassName(testClassName));
+  }
+
   public static void setTestMethodName(final String testMethodName) {
     currentMethodName = testMethodName;
     envList.forEach(baseEnv -> baseEnv.setTestMethodName(testMethodName));
@@ -56,7 +62,7 @@ public static void createEnv(final int num) {
     for (int i = 0; i < num; ++i) {
       try {
         Class.forName(Config.JDBC_DRIVER_NAME);
-        envList.add(new MultiClusterEnv(startTime, i, currentMethodName));
+        envList.add(new MultiClusterEnv(startTime, i, currentClassName, currentMethodName));
       } catch (final ClassNotFoundException e) {
         logger.error("Create env error", e);
         System.exit(-1);
 
@@ -85,6 +85,12 @@ public CommonConfig setMemtableSizeThreshold(long memtableSizeThreshold) {
     return this;
   }
 
+  @Override
+  public CommonConfig setMetadataLeaseFenceMs(long metadataLeaseFenceMs) {
+    setProperty("metadata_lease_fence_ms", String.valueOf(metadataLeaseFenceMs));
+    return this;
+  }
+
   @Override
   public CommonConfig setPartitionInterval(long partitionInterval) {
     setProperty("time_partition_interval", String.valueOf(partitionInterval));
 
@@ -61,6 +61,13 @@ public CommonConfig setMemtableSizeThreshold(long memtableSizeThreshold) {
     return this;
   }
 
+  @Override
+  public CommonConfig setMetadataLeaseFenceMs(long metadataLeaseFenceMs) {
+    cnConfig.setMetadataLeaseFenceMs(metadataLeaseFenceMs);
+    dnConfig.setMetadataLeaseFenceMs(metadataLeaseFenceMs);
+    return this;
+  }
+
   @Override
   public CommonConfig setPartitionInterval(long partitionInterval) {
     cnConfig.setPartitionInterval(partitionInterval);
 
@@ -105,6 +105,7 @@ public abstract class AbstractEnv implements BaseEnv {
   protected List<ConfigNodeWrapper> configNodeWrapperList = Collections.emptyList();
   protected List<DataNodeWrapper> dataNodeWrapperList = Collections.emptyList();
   protected List<AbstractNodeWrapper> extraNodeWrappers = Collections.emptyList();
+  protected String testClassName = null;
   protected String testMethodName = null;
   protected int index = 0;
   protected long startTime;
@@ -331,6 +332,9 @@ private DataNodeWrapper newDataNode() {
   }
 
   public String getTestClassName() {
+    if (testClassName != null) {
+      return testClassName;
+    }
     final StackTraceElement[] stack = Thread.currentThread().getStackTrace();
     for (final StackTraceElement stackTraceElement : stack) {
       final String className = stackTraceElement.getClassName();
@@ -1228,6 +1232,17 @@ public String getTestMethodName() {
     return testMethodName;
   }
 
+  @Override
+  public void setTestClassName(final String testClassName) {
+    if (testClassName == null || testClassName.isEmpty()) {
+      this.testClassName = null;
+      return;
+    }
+    final int lastDotIndex = testClassName.lastIndexOf(".");
+    this.testClassName =
+        lastDotIndex >= 0 ? testClassName.substring(lastDotIndex + 1) : testClassName;
+  }
+
   @Override
   public void setTestMethodName(final String testMethodName) {
     this.testMethodName = testMethodName;
 
@@ -26,8 +26,17 @@
 public class MultiClusterEnv extends AbstractEnv {
 
   public MultiClusterEnv(final long startTime, final int index, final String currentMethodName) {
+    this(startTime, index, null, currentMethodName);
+  }
+
+  public MultiClusterEnv(
+      final long startTime,
+      final int index,
+      final String currentClassName,
+      final String currentMethodName) {
     super(startTime);
     this.index = index;
+    setTestClassName(currentClassName);
     this.testMethodName = currentMethodName;
   }
 
 
@@ -44,6 +44,11 @@ public CommonConfig setMemtableSizeThreshold(long memtableSizeThreshold) {
     return this;
   }
 
+  @Override
+  public CommonConfig setMetadataLeaseFenceMs(long metadataLeaseFenceMs) {
+    return this;
+  }
+
   @Override
   public CommonConfig setPartitionInterval(long partitionInterval) {
     return this;
 
@@ -205,6 +205,10 @@ default Connection getConnectionWithSpecifiedDataNode(DataNodeWrapper dataNode)
   Connection getConnectionWithSpecifiedDataNode(
       DataNodeWrapper dataNode, String username, String password) throws SQLException;
 
+  default void setTestClassName(String testClassName) {
+    // Default no-op for env implementations that do not create local node log directories.
+  }
+
   void setTestMethodName(String testCaseName);
 
   void dumpTestJVMSnapshot();
 
@@ -32,6 +32,8 @@ public interface CommonConfig {
 
   CommonConfig setMemtableSizeThreshold(long memtableSizeThreshold);
 
+  CommonConfig setMetadataLeaseFenceMs(long metadataLeaseFenceMs);
+
   CommonConfig setPartitionInterval(long partitionInterval);
 
   CommonConfig setCompressor(String compressor);