diff --git a/java/tsfile/src/main/java/org/apache/tsfile/read/TsFileSequenceReader.java b/java/tsfile/src/main/java/org/apache/tsfile/read/TsFileSequenceReader.java
index 376fc9b9f..ff7c50069 100644
--- a/java/tsfile/src/main/java/org/apache/tsfile/read/TsFileSequenceReader.java
+++ b/java/tsfile/src/main/java/org/apache/tsfile/read/TsFileSequenceReader.java
@@ -1828,7 +1828,7 @@ public long fileSize() throws IOException {
    * @param totalSize the size of data that want to read
    * @return data that been read.
    */
-  protected ByteBuffer readData(long position, int totalSize) throws IOException {
+  protected final ByteBuffer readData(long position, int totalSize) throws IOException {
     return readData(position, totalSize, null);
   }
 
@@ -1889,7 +1889,7 @@ protected ByteBuffer readData(long position, int totalSize, LongConsumer ioSizeR
    * @param end the end position of data that want to read
    * @return data that been read.
    */
-  protected ByteBuffer readData(long start, long end) throws IOException {
+  protected final ByteBuffer readData(long start, long end) throws IOException {
     return readData(start, end, null);
   }
 
@@ -1903,7 +1903,7 @@ protected ByteBuffer readData(long start, long end) throws IOException {
    * @param ioSizeRecorder can be null
    * @return data that been read.
    */
-  protected ByteBuffer readData(long start, long end, LongConsumer ioSizeRecorder)
+  protected final ByteBuffer readData(long start, long end, LongConsumer ioSizeRecorder)
       throws IOException {
     try {
       return readData(start, (int) (end - start), ioSizeRecorder);