diff --git a/connectors/paimon-connector/src/main/java/io/tapdata/connector/paimon/service/PaimonService.java b/connectors/paimon-connector/src/main/java/io/tapdata/connector/paimon/service/PaimonService.java
index c406fd0b..4392f9d9 100644
--- a/connectors/paimon-connector/src/main/java/io/tapdata/connector/paimon/service/PaimonService.java
+++ b/connectors/paimon-connector/src/main/java/io/tapdata/connector/paimon/service/PaimonService.java
@@ -16,14 +16,14 @@
 import io.tapdata.pdk.apis.context.TapConnectorContext;
 import io.tapdata.pdk.apis.entity.WriteListResult;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.paimon.catalog.Catalog;
-import org.apache.paimon.catalog.CatalogContext;
-import org.apache.paimon.catalog.CatalogFactory;
-import org.apache.paimon.catalog.Identifier;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.paimon.catalog.*;
 import org.apache.paimon.data.BinaryString;
 import org.apache.paimon.data.Decimal;
 import org.apache.paimon.data.GenericRow;
 import org.apache.paimon.data.Timestamp;
+import org.apache.paimon.fs.FileIO;
+import org.apache.paimon.fs.hadoop.HadoopFileIO;
 import org.apache.paimon.options.Options;
 import org.apache.paimon.schema.Schema;
 import org.apache.paimon.table.Table;
@@ -34,6 +34,7 @@
 import org.apache.paimon.types.RowKind;
 
 import java.io.Closeable;
+import java.lang.reflect.Field;
 import java.math.BigDecimal;
 import java.util.*;
 import java.util.concurrent.*;
@@ -255,6 +256,7 @@ private Configuration buildHadoopConfiguration() {
 			// NoClassDefFoundError due to classloader/version conflicts.
 			// Ensure S3A filesystem is used when scheme is s3a
 			conf.set("fs.s3a.impl", "org.apache.hadoop.fs.s3a.S3AFileSystem");
+			conf.set("fs.s3a.impl.disable.cache", "true");
 			conf.set("fs.AbstractFileSystem.s3a.impl", "org.apache.hadoop.fs.s3a.S3A");
 
 		}
@@ -796,11 +798,11 @@ private WriteListResult<TapRecordEvent> writeRecordsWithStreamWriteInternal(List
 			WriteListResult<TapRecordEvent> result = new WriteListResult<>();
 			Identifier identifier = Identifier.create(database, tableName);
 
-			// Get or create cached writer and commit
-			StreamTableWrite writer = getOrCreateStreamWriter(tableKey, identifier);
-			StreamTableCommit commit = getOrCreateStreamCommit(tableKey, identifier);
-
 			try {
+				// Get or create cached writer and commit
+				StreamTableWrite writer = getOrCreateStreamWriter(tableKey, identifier);
+				StreamTableCommit commit = getOrCreateStreamCommit(tableKey, identifier);
+
 				// Write all records to the writer
 				for (TapRecordEvent event : recordEvents) {
 					if (event instanceof TapInsertRecordEvent) {
@@ -946,11 +948,30 @@ private void cleanupAllResources() {
 		// Close old catalog if exists
 		if (catalog != null) {
 			try {
+				if (catalog instanceof CachingCatalog) {
+					CachingCatalog cachingCatalog = (CachingCatalog) catalog;
+					Catalog wrapped = cachingCatalog.wrapped();
+					if (wrapped instanceof FileSystemCatalog) {
+						FileSystemCatalog fileSystemCatalog = (FileSystemCatalog) wrapped;
+						FileIO fileIO = null;
+						try {
+							fileIO = fileSystemCatalog.fileIO();
+						} catch (Throwable ignore) {
+							// Ignore fileIO lookup errors
+						}
+
+						// Best-effort close: proactively close FileSystem instances cached by HadoopFileIO
+						closeHadoopFileIOCachedFileSystems(fileIO);
+						closeQuietly(fileIO);
+					}
+				}
+
 				catalog.close();
-			} catch (Exception e) {
+			} catch (Throwable e) {
 				// Ignore close errors
+			} finally {
+				catalog = null;
 			}
-			catalog = null;
 		}
 
 		// Wait a bit to ensure all internal threads are cleaned up
@@ -962,6 +983,66 @@ private void cleanupAllResources() {
 		}
 	}
 
+	private void closeQuietly(Closeable closeable) {
+		if (closeable == null) {
+			return;
+		}
+		try {
+			closeable.close();
+		} catch (Exception ignore) {
+			// Ignore close errors
+		}
+	}
+
+	/**
+	 * Best-effort close for cached Hadoop FileSystem instances inside Paimon HadoopFileIO.
+	 * <p>
+	 * HadoopFileIO may cache FileSystem instances (e.g., in a field named "fsMap"). Even if
+	 * Hadoop global FileSystem cache is disabled, this internal cache can still keep an S3A
+	 * FileSystem whose thread factory captured a Task ThreadGroup that will be destroyed later.
+	 */
+	private void closeHadoopFileIOCachedFileSystems(Object fileIO) {
+		if (!(fileIO instanceof HadoopFileIO)) {
+			return;
+		}
+
+		try {
+			Field fsMapField = fileIO.getClass().getDeclaredField("fsMap");
+			fsMapField.setAccessible(true);
+			Object fsMapObject = fsMapField.get(fileIO);
+			if (!(fsMapObject instanceof Map)) {
+				return;
+			}
+
+			Map<?, ?> fsMap = (Map<?, ?>) fsMapObject;
+			if (fsMap.isEmpty()) {
+				return;
+			}
+
+			// Copy values first to avoid ConcurrentModificationException in case close triggers internal updates.
+			List<Object> fileSystems = new ArrayList<>(fsMap.values());
+			for (Object fs : fileSystems) {
+				if (fs instanceof FileSystem) {
+					try {
+						((FileSystem) fs).close();
+					} catch (Exception ignore) {
+						// Ignore close errors
+					}
+				}
+			}
+
+			try {
+				fsMap.clear();
+			} catch (Exception ignore) {
+				// Ignore clear errors
+			}
+		} catch (NoSuchFieldException ignore) {
+			// HadoopFileIO implementation differs; ignore.
+		} catch (Throwable ignore) {
+			// Best-effort only
+		}
+	}
+
 	/**
 	 * Check if the exception is caused by ThreadGroup being destroyed.
 	 * This typically happens when the classloader that created Paimon's thread factory