From cd77425b87264e76d1c60af971b8cdebd148b52c Mon Sep 17 00:00:00 2001
From: Yongteng Lei <yongtengrey@outlook.com>
Date: Tue, 21 Oct 2025 15:49:51 +0800
Subject: [PATCH] Fix: potential negative max_tokens in RAPTOR (#10701)

### What problem does this PR solve?

Fix potential negative max_tokens in RAPTOR. #10235.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue
---
 rag/raptor.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rag/raptor.py b/rag/raptor.py
index 6ce776a68..191ecdeb4 100644
--- a/rag/raptor.py
+++ b/rag/raptor.py
@@ -114,7 +114,7 @@ class RecursiveAbstractiveProcessing4TreeOrganizedRetrieval:
                             ),
                         }
                     ],
-                    {"max_tokens": self._max_token},
+                    {"max_tokens": max(self._max_token, 512)}, # fix issue:  #10235
                 )
                 cnt = re.sub(
                     "(······\n由于长度的原因，回答被截断了，要继续吗？|For the content length reason, it stopped, continue?)",