Use Infinity single-field-multi-index (#11444)

### What problem does this PR solve?

Use Infinity single-field-multi-index

### Type of change

- [x] Refactoring
- [x] Performance Improvement

api/apps/sdk/doc.py

@@ -1289,7 +1289,7 @@ async def update_chunk(tenant_id, dataset_id, document_id, chunk_id):
         return get_error_data_result(message=f"You don't own the document {document_id}.")
     doc = doc[0]
     req = await request_json()
-    if "content" in req:
+    if "content" in req and req["content"] is not None:
         content = req["content"]
     else:
         content = chunk.get("content_with_weight", "")

api/ragflow_server.py

@@ -20,7 +20,6 @@
 
 from common.log_utils import init_root_logger
 from plugin import GlobalPluginManager
-init_root_logger("ragflow_server")
 
 import logging
 import os
@@ -30,6 +29,7 @@ import time
 import traceback
 import threading
 import uuid
+import faulthandler
 
 from api.apps import app, smtp_mail_server
 from api.db.runtime_config import RuntimeConfig
@@ -73,6 +73,8 @@ def signal_handler(sig, frame):
     sys.exit(0)
 
 if __name__ == '__main__':
+    faulthandler.enable()
+    init_root_logger("ragflow_server")
     logging.info(r"""
         ____   ___    ______ ______ __
        / __ \ /   |  / ____// ____// /____  _      __

api/utils/api_utils.py

@@ -89,7 +89,8 @@ def get_data_error_result(code=RetCode.DATA_ERROR, message="Sorry! Data missing!
 
 
 def server_error_response(e):
-    logging.exception(e)
+    # Quart invokes this handler outside the original except block, so we must pass exc_info manually.
+    logging.error("Unhandled exception during request", exc_info=(type(e), e, e.__traceback__))
     try:
         msg = repr(e).lower()
         if getattr(e, "code", None) == 401 or ("unauthorized" in msg) or ("401" in msg):