From a775bbfdf2be51b208474a71b6f9c7c3dd4ad9a8 Mon Sep 17 00:00:00 2001
From: cthomas <caren@letta.com>
Date: Wed, 7 Jan 2026 11:58:51 -0800
Subject: [PATCH] feat: offload llama index init logic (#8387)

---
 letta/services/file_processor/file_processor.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/letta/services/file_processor/file_processor.py b/letta/services/file_processor/file_processor.py
index ed4e0c5b..81ca5513 100644
--- a/letta/services/file_processor/file_processor.py
+++ b/letta/services/file_processor/file_processor.py
@@ -50,8 +50,10 @@ class FileProcessor:
         """Chunk text and generate embeddings with fallback to default chunker if needed"""
         filename = file_metadata.file_name
 
-        # Create file-type-specific chunker
-        text_chunker = LlamaIndexChunker(file_type=file_metadata.file_type, chunk_size=self.embedder.embedding_config.embedding_chunk_size)
+        # Create file-type-specific chunker in thread pool to avoid blocking event loop
+        text_chunker = await asyncio.to_thread(
+            LlamaIndexChunker, file_type=file_metadata.file_type, chunk_size=self.embedder.embedding_config.embedding_chunk_size
+        )
 
         # First attempt with file-specific chunker
         try: