diff --git a/backend/src/main/java/com/storage/engine/service/adapter/StorageUtils.java b/backend/src/main/java/com/storage/engine/service/adapter/StorageUtils.java
index 6de7d80..4eddcb8 100644
--- a/backend/src/main/java/com/storage/engine/service/adapter/StorageUtils.java
+++ b/backend/src/main/java/com/storage/engine/service/adapter/StorageUtils.java
@@ -125,7 +125,6 @@ public static String toFileLeafPath(String iginxPath, String originalFileName) {
         if (slash >= 0 && slash < base.length() - 1) {
             base = base.substring(slash + 1);
         }
-        base = base.replaceAll("[^a-zA-Z0-9._-]", "_");
         if (base.isEmpty()) {
             base = "content.bin";
         }
diff --git a/backend/src/main/resources/udf/metadata/extractors/document_extractor.py b/backend/src/main/resources/udf/metadata/extractors/document_extractor.py
index d8556e7..a0909e8 100644
--- a/backend/src/main/resources/udf/metadata/extractors/document_extractor.py
+++ b/backend/src/main/resources/udf/metadata/extractors/document_extractor.py
@@ -6,6 +6,7 @@ class DocumentMetadataExtractor(BaseMetadataExtractor):
 
     USER_PROMPT_TEMPLATE = (
         "请从输入的文档文本中抽取语义三元组。 "
+        "尽可能提取代表元数据的语义，而非具体的数值或事实。 "
         "请严格只返回 JSON，不要输出 Markdown 或解释。 "
         "返回格式要求："
         "{{\"entities\":[\"entity\"],\"triples\":[{{\"subject\":\"entityA\",\"predicate\":\"relation\",\"object\":\"entityB\"}}]}}. "
@@ -15,7 +16,7 @@ class DocumentMetadataExtractor(BaseMetadataExtractor):
     )
 
     USER_RETRY_PROMPT_TEMPLATE = (
-        "你上一轮可能没有返回可用三元组。请再次检查内容并尽量抽取核心语义关系；若确实无关系，triples 返回空数组。 "
+        "你上一轮可能没有返回可用三元组。请再次检查内容并尽量抽取核心语义关系；尽可能提取代表元数据的语义，而非具体的数值或事实；若确实无关系，triples 返回空数组。 "
         "请严格只返回 JSON，不要输出 Markdown 或解释。 "
         "返回格式要求："
         "{{\"entities\":[\"entity\"],\"triples\":[{{\"subject\":\"entityA\",\"predicate\":\"relation\",\"object\":\"entityB\"}}]}}. "
diff --git a/frontend/app.js b/frontend/app.js
index efdf641..13e76a4 100644
--- a/frontend/app.js
+++ b/frontend/app.js
@@ -113,7 +113,7 @@ function renderPagination(containerId, stateKey, totalPages, total, onPageChange
 function formatBytes(bytes) {
   const value = Number(bytes || 0);
   if (!Number.isFinite(value) || value <= 0) return '0 B';
-  const units = ['B', 'KB', 'MB', 'GB', 'TB'];
+  const units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
   let size = value;
   let idx = 0;
   while (size >= 1024 && idx < units.length - 1) {
@@ -2982,7 +2982,7 @@ function escapeHtml(str) {
 
 function formatFileSize(bytes) {
   if (!bytes || bytes === 0) return '0 B';
-  const units = ['B', 'KB', 'MB', 'GB', 'TB'];
+  const units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
   const i = Math.floor(Math.log(bytes) / Math.log(1024));
   return (bytes / Math.pow(1024, i)).toFixed(1) + ' ' + units[i];
 }
diff --git a/test/batch_add_datasource.py b/test/batch_add_datasource.py
index 8961a8e..b70c08b 100644
--- a/test/batch_add_datasource.py
+++ b/test/batch_add_datasource.py
@@ -25,6 +25,8 @@
 SSH_PORT = 22
 
 REQUEST_DELAY = 0.1  # 请求间隔（秒）
+BATCH_SIZE = 10 # 每批请求数量
+BATCH_REQUEST_DELAY = 0 # 每批请求间隔（秒）
 TIMEOUT = 60  # 请求超时（秒）
 
 # ==================== 颜色输出 ====================
@@ -124,8 +126,8 @@ def main():
                 Colors.RED
             )
         
-        # 每10个打印进度
-        if i % 10 == 0:
+        # 每 BATCH_SIZE 个打印进度
+        if i % BATCH_SIZE == 0:
             progress = (i * 100.0) / TOTAL_COUNT
             print()
             print_colored(
@@ -134,6 +136,7 @@ def main():
                 Colors.YELLOW
             )
             print()
+            time.sleep(BATCH_REQUEST_DELAY)
         
         # 延迟
         time.sleep(REQUEST_DELAY)