[Bug]: Large Document Processing Failure and Missing Graph Relationships

[axunrun]

Do you need to file an issue?

• I have searched the existing issues and this bug is not already filed.
• I believe this is a legitimate bug, not just a question or feature request.

Describe the bug

Processing failure observed when handling a large text document (2.3MB TXT file). The system is unable to complete the expected processing tasks.

Current Behavior

1. Document processing task does not complete successfully
2. Expected data is missing from the database
3. Neo4j database shows connection blocking issues
4. Graph nodes exist in isolation without relationships between them

Steps to reproduce

1. Upload a 2.3MB text document
2. Wait for processing to complete
3. Check database for results

Expected Behavior

1. Database Connection
   • Neo4j connection blocking observed
   • Insufficient debug information in backend logs
2. Data Integrity
   • Graph relationships are not established
   • Nodes exist but are disconnected
   • Expected processing results are missing from database

LightRAG Config Used

Document Size: 2.3MB
File Type: TXT
Database: Neo4j (Graph Database)

Storage Configuration

LIGHTRAG_KV_STORAGE=PGKVStorage
LIGHTRAG_VECTOR_STORAGE=QdrantVectorDBStorage
LIGHTRAG_GRAPH_STORAGE=Neo4JStorage
LIGHTRAG_DOC_STATUS_STORAGE=PGDocStatusStorage

Logs and screenshots

neo4j logs

Additional Information

• LightRAG Version:
• Operating System:
• Python Version:
• Related Issues:

[15388576368]

你好，你上传大型文件花费的时间长嘛