From 5679380e2cce4dc0e42f82fce7ab774e3a51c4b7 Mon Sep 17 00:00:00 2001
From: shuwenwei <s13979062948@gmail.com>
Date: Thu, 5 Feb 2026 15:29:15 +0800
Subject: [PATCH] Prevent modified flag from being overwritten

---
 .../src/main/java/org/apache/tsfile/file/header/PageHeader.java | 2 +-
 .../java/org/apache/tsfile/file/metadata/ChunkMetadata.java     | 2 +-
 .../org/apache/tsfile/file/metadata/TimeseriesMetadata.java     | 2 +-
 .../tsfile/read/reader/page/AbstractAlignedPageReader.java      | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/java/tsfile/src/main/java/org/apache/tsfile/file/header/PageHeader.java b/java/tsfile/src/main/java/org/apache/tsfile/file/header/PageHeader.java
index 78d80f32f..d752d509f 100644
--- a/java/tsfile/src/main/java/org/apache/tsfile/file/header/PageHeader.java
+++ b/java/tsfile/src/main/java/org/apache/tsfile/file/header/PageHeader.java
@@ -170,7 +170,7 @@ public boolean isModified() {
   }
 
   public void setModified(boolean modified) {
-    this.modified = modified;
+    this.modified |= modified;
   }
 
   /** max page header size without statistics. */
diff --git a/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/ChunkMetadata.java b/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/ChunkMetadata.java
index a76ef65c2..426486215 100644
--- a/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/ChunkMetadata.java
+++ b/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/ChunkMetadata.java
@@ -334,7 +334,7 @@ public boolean isModified() {
 
   @Override
   public void setModified(boolean modified) {
-    this.modified = modified;
+    this.modified |= modified;
   }
 
   public static long calculateRamSize(String measurementId, TSDataType dataType) {
diff --git a/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/TimeseriesMetadata.java b/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/TimeseriesMetadata.java
index 96f9c5623..1e254e065 100644
--- a/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/TimeseriesMetadata.java
+++ b/java/tsfile/src/main/java/org/apache/tsfile/file/metadata/TimeseriesMetadata.java
@@ -355,7 +355,7 @@ public boolean isModified() {
 
   @Override
   public void setModified(boolean modified) {
-    this.modified = modified;
+    this.modified |= modified;
   }
 
   @Override
diff --git a/java/tsfile/src/main/java/org/apache/tsfile/read/reader/page/AbstractAlignedPageReader.java b/java/tsfile/src/main/java/org/apache/tsfile/read/reader/page/AbstractAlignedPageReader.java
index 42a802c90..b3090a575 100644
--- a/java/tsfile/src/main/java/org/apache/tsfile/read/reader/page/AbstractAlignedPageReader.java
+++ b/java/tsfile/src/main/java/org/apache/tsfile/read/reader/page/AbstractAlignedPageReader.java
@@ -350,7 +350,7 @@ public boolean isModified() {
 
   @Override
   public void setModified(boolean modified) {
-    this.isModified = modified;
+    this.isModified |= modified;
   }
 
   @Override