Aari a0e091e750 fix(data_source): scope table and link state to ancestors in format_document_soup (#17045)
### Summary

`format_document_soup` tracks "am I inside a table" and "am I inside a
link" with sticky flags that are meant to be reset by `elif e.name ==
"/table"` and `elif e.name == "/a"`. BeautifulSoup's `.descendants` only
yields opening tags — a `Tag` named `/table` or `/a` never exists — so
both branches are dead code and neither flag is ever cleared.

Everything after the first `<table>` on a page is therefore formatted as
if it were still table content: paragraphs lose their newline, list
items lose their `- ` marker, headings lose their break, and the text is
glued onto the last table cell. Under
`HTML_BASED_CONNECTOR_TRANSFORM_LINKS_STRATEGY=markdown` the same bug
leaks a link's `href` into everything that follows it, including whole
subsequent paragraphs. The Confluence connector
(`confluence_connector.py:948`) goes through this path.

Real output for a Confluence-shaped page (heading, intro, spec table,
then the body) via the public `parse_html_page_basic`:

**Before**

```
	prod	us-east-1 Rollback procedure If the canary fails, run the rollback script immediately. Drain the load balancer Revert the deployment Escalate to the on-call rota if the rollback stalls. Do not skip the post-mortem.
```

**After**

```
	prod	us-east-1
Rollback procedure
If the canary fails, run the rollback script immediately.
- Drain the load balancer
- Revert the deployment
Escalate to [the on-call rota](http://oncall.example.com) if the rollback stalls.
Do not skip the post-mortem.
```

Every heading, paragraph and list marker after the table is lost, and
the whole body is indexed as one run-on line hanging off a table cell.

### Fix

Derive both scopes from each element's **ancestors** instead of from
flags that nothing can clear, and drop the two dead branches plus the
two that become redundant.

The scopes are resolved in one up-front pass into `id`-keyed maps
(`table_scope`, `href_scope`) and looked up in O(1) per element. Probing
per element with `find_parent` instead is O(depth) each, which measured
12–13× slower on table-heavy pages and up to 103× on deeply nested
markup; the map version costs a depth-independent 1.13–1.35× over
`main`. Numbers and method are in the round-2 comment below.

This also changes one adjacent behaviour worth calling out explicitly: a
link **inside** a table cell now renders as markdown, where before it
rendered as plain text. That previous behaviour was not by design — it
only held when no link preceded the table. With a link before the table,
`main` stamps the stale href onto every cell:

```
main:   '[pre](http://STALE.com)\n\t[cellA](http://STALE.com)\t[cellB](http://STALE.com)'
branch: '[pre](http://STALE.com)\n\tcellA\tcellB'
```

Those cells are not links. Both symptoms are the same sticky-state bug,
so they are fixed together rather than left half-done.

### Testing

`test/unit_test/data_source/test_html_utils.py` is new —
`format_document_soup` had no test coverage. 11 tests: 8 fail on `main`
and pass on this branch, 3 are controls that pass on both (the table
itself still separates rows and cells, anchor text is still linkified,
the default `strip` strategy still strips).

Representative failures on `main`:

```
assert '\nAfter' in 'Before\n\tA\tB After'
assert '\n- item1' in 'Before\n\tA\tB item1 item2'
assert 'see [link](http://x.com) [ after](http://x.com)' == 'see [link](http://x.com) after'
assert '[next paragraph]' not in '[link](http://x.com)\n[next paragraph](http://x.com)'
```

Reverting each clause of the fix independently keeps the anchors honest:
reverting only the table clause fails exactly the 4 table tests and
leaves the link tests green; reverting only the link clause fails
exactly the 3 link tests and leaves the table tests green.
(`test_link_inside_a_table_cell_is_linkified` needs both clauses broken
to fail, so it appears in neither single-clause revert — it is covered
by the 8-fail run against `main`.)

Full `test/unit_test/data_source/` suite: **3 failed, 199 passed**, and
the failure set is byte-identical to clean `main` (**3 failed, 188
passed**) — the 3 are `TestSSRFValidation::*`, which resolve
`api.example.com` against real DNS and are unrelated to this change.
`ruff check` and `ruff format --check` are clean on both touched files.

---

This PR was drafted with AI assistance (Claude). I reviewed the change,
independently reproduced both symptoms against `main`, and take
responsibility for it.
2026-08-11 22:28:40 +08:00
2026-07-20 14:30:24 +08:00
2026-07-03 17:00:43 +08:00
2026-07-03 17:00:43 +08:00

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📕 Table of Contents

💡 What is RAGFlow?

RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs. It offers a streamlined RAG workflow adaptable to enterprises of any scale. Powered by a converged context engine and pre-built agent templates, RAGFlow enables developers to transform complex data into high-fidelity, production-ready AI systems with exceptional efficiency and precision.

🎮 Get Started

Try our cloud service at https://cloud.ragflow.io.

Chunking demonstration Agentic workflow demonstration

🔥 Latest Updates

  • 2026-06-15 Support multiple chat channels such as Feishu, Discord, Telegram, Line, etc.
  • 2026-04-24 Supports DeepSeek v4.
  • 2026-03-24 RAGFlow Skill on OpenClaw — Provides an official skill for accessing RAGFlow datasets via OpenClaw.
  • 2025-12-26 Supports 'Memory' for AI agent.
  • 2025-11-19 Supports Gemini 3 Pro.
  • 2025-11-12 Supports data synchronization from Confluence, S3, Notion, Discord, Google Drive.
  • 2025-10-23 Supports MinerU & Docling as document parsing methods.
  • 2025-10-15 Supports orchestrable ingestion pipeline.
  • 2025-08-08 Supports OpenAI's latest GPT-5 series models.
  • 2025-08-01 Supports agentic workflow and MCP.
  • 2025-05-23 Adds a Python/JavaScript code executor component to Agent.
  • 2025-03-19 Supports using a multi-modal model to make sense of images within PDF or DOCX files.

🎉 Stay Tuned

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RAGFlow feature updates

🌟 Key Features

🍭 "Quality in, quality out"

  • Deep document understanding-based knowledge extraction from unstructured data with complicated formats.
  • Finds "needle in a data haystack" of literally unlimited tokens.

🍱 Template-based chunking

  • Intelligent and explainable.
  • Plenty of template options to choose from.

🌱 Grounded citations with reduced hallucinations

  • Visualization of text chunking to allow human intervention.
  • Quick view of the key references and traceable citations to support grounded answers.

🍔 Compatibility with heterogeneous data sources

  • Supports Word, Slides, Excel, TXT, images, scanned copies, structured data, web pages, and more.

🛀 Automated and effortless RAG workflow

  • Streamlined RAG orchestration catered to both personal and large businesses.
  • Configurable LLMs as well as embedding models.
  • Multiple recall paired with fused re-ranking.
  • Intuitive APIs for seamless integration with business.

🔎 System Architecture

RAGFlow system architecture

🎬 Self-Hosting

📝 Prerequisites

  • CPU >= 4 cores
  • RAM >= 16 GB
  • Disk >= 50 GB
  • Docker >= 24.0.0 & Docker Compose >= v2.26.1
  • Python >= 3.13
  • gVisor: Required only if you intend to use the code executor (sandbox) feature of RAGFlow.

Tip

If you have not installed Docker on your local machine (Windows, Mac, or Linux), see Install Docker Engine.

🚀 Start up the server

  1. Ensure vm.max_map_count >= 262144:

    To check the value of vm.max_map_count:

    sysctl vm.max_map_count
    

    Reset vm.max_map_count to a value at least 262144 if it is not.

    # In this case, we set it to 262144:
    sudo sysctl -w vm.max_map_count=262144
    

    This change will be reset after a system reboot. To ensure your change remains permanent, add or update the vm.max_map_count value in /etc/sysctl.conf accordingly:

    vm.max_map_count=262144
    
  2. Clone the repo:

    git clone https://github.com/infiniflow/ragflow.git
    
  3. Start up the server using the pre-built Docker images:

Caution

All Docker images are built for x86 platforms. We don't currently offer Docker images for ARM64. If you are on an ARM64 platform, follow this guide to build a Docker image compatible with your system.

The command below downloads the v0.26.4 edition of the RAGFlow Docker image. See the following table for descriptions of different RAGFlow editions. To download a RAGFlow edition different from v0.26.4, update the RAGFLOW_IMAGE variable accordingly in docker/.env before using docker compose to start the server.

   cd ragflow/docker

   git checkout v0.26.4
   # Optional: use a stable tag (see releases: https://github.com/infiniflow/ragflow/releases)
   # This step ensures the **entrypoint.sh** file in the code matches the Docker image version.

   # Use CPU for DeepDoc tasks:
   docker compose -f docker-compose.yml up -d

   # To use GPU to accelerate DeepDoc tasks:
   # sed -i '1i DEVICE=gpu' .env
   # docker compose -f docker-compose.yml up -d

Note: Prior to v0.22.0, we provided both images with embedding models and slim images without embedding models. Details as follows:

RAGFlow image tag Image size (GB) Has embedding models? Stable?
v0.21.1 ≈9 ✔️ Stable release
v0.21.1-slim ≈2 Stable release

Starting with v0.22.0, we ship only the slim edition and no longer append the -slim suffix to the image tag.

  1. Check the server status after having the server up and running:

    docker logs -f docker-ragflow-cpu-1
    

    The following output confirms a successful launch of the system:

    
          ____   ___    ______ ______ __
         / __ \ /   |  / ____// ____// /____  _      __
        / /_/ // /| | / / __ / /_   / // __ \| | /| / /
       / _, _// ___ |/ /_/ // __/  / // /_/ /| |/ |/ /
      /_/ |_|/_/  |_|\____//_/    /_/ \____/ |__/|__/
    
     * Running on all addresses (0.0.0.0)
    

    If you skip this confirmation step and directly log in to RAGFlow, your browser may prompt a network abnormal error because, at that moment, your RAGFlow may not be fully initialized.

  2. In your web browser, enter the IP address of your server and log in to RAGFlow.

    With the default settings, you only need to enter http://IP_OF_YOUR_MACHINE (sans port number) as the default HTTP serving port 80 can be omitted when using the default configurations.

  3. In service_conf.yaml.template, select the desired LLM factory in user_default_llm and update the API_KEY field with the corresponding API key.

    See llm_api_key_setup for more information.

    The show is on!

🔧 Configurations

When it comes to system configurations, you will need to manage the following files:

  • .env: Keeps the fundamental setups for the system, such as SVR_HTTP_PORT, MYSQL_PASSWORD, and MINIO_PASSWORD.
  • service_conf.yaml.template: Configures the back-end services. The environment variables in this file will be automatically populated when the Docker container starts. Any environment variables set within the Docker container will be available for use, allowing you to customize service behavior based on the deployment environment.
  • docker-compose.yml: The system relies on docker-compose.yml to start up.

The ./docker/README file provides a detailed description of the environment settings and service configurations which can be used as ${ENV_VARS} in the service_conf.yaml.template file.

To update the default HTTP serving port (80), go to docker-compose.yml and change 80:80 to <YOUR_SERVING_PORT>:80.

Updates to the above configurations require a reboot of all containers to take effect:

docker compose -f docker-compose.yml up -d

Switch doc engine from Elasticsearch to Infinity

RAGFlow uses Elasticsearch by default for storing full text and vectors. To switch to Infinity, follow these steps:

  1. Stop all running containers:

    docker compose -f docker/docker-compose.yml down -v
    

Warning

-v will delete the docker container volumes, and the existing data will be cleared.

  1. Set DOC_ENGINE in docker/.env to infinity.

  2. Start the containers:

    docker compose -f docker/docker-compose.yml up -d
    

Warning

Switching to Infinity on a Linux/arm64 machine is not yet officially supported.

🔧 Build a Docker Image

This image is approximately 2 GB in size and relies on external LLM and embedding services.

git clone https://github.com/infiniflow/ragflow.git
cd ragflow/
docker build --platform linux/amd64 -f Dockerfile -t infiniflow/ragflow:nightly .

Or if you are behind a proxy, you can pass proxy arguments:

docker build --platform linux/amd64 \
  --build-arg http_proxy=http://YOUR_PROXY:PORT \
  --build-arg https_proxy=http://YOUR_PROXY:PORT \
  -f Dockerfile -t infiniflow/ragflow:nightly .

🔨 Launch Service from Source for Development

Important

After cloning the repository for the first time, run git config --local --unset core.hooksPath, uv tool install lefthook and lefthook install once from the repo root to enable local Git hooks.

  1. Install uv, or skip this step if it is already installed:

    pipx install uv
    
  2. Clone the source code and install Python dependencies:

    git clone https://github.com/infiniflow/ragflow.git
    cd ragflow/
    uv sync --python 3.13 # install RAGFlow dependent python modules
    uv run python3 ragflow_deps/download_deps.py
    git config --local --unset core.hooksPath
    uv tool install lefthook
    lefthook install
    
  3. Launch the dependent services (MinIO, Elasticsearch, Redis, and MySQL) using Docker Compose:

    docker compose -f docker/docker-compose-base.yml up -d
    

    Add the following line to /etc/hosts to resolve all hosts specified in docker/.env to 127.0.0.1:

    127.0.0.1       es01 infinity mysql minio redis sandbox-executor-manager
    
  4. If you cannot access HuggingFace, set the HF_ENDPOINT environment variable to use a mirror site:

    export HF_ENDPOINT=https://hf-mirror.com
    
  5. If your operating system does not have jemalloc, please install it as follows:

    # Ubuntu
    sudo apt-get install libjemalloc-dev
    # CentOS
    sudo yum install jemalloc
    # OpenSUSE
    sudo zypper install jemalloc
    # macOS
    brew install jemalloc
    
  6. Launch backend service:

    source .venv/bin/activate
    export PYTHONPATH=$(pwd)
    bash docker/launch_backend_service.sh
    
  7. Install frontend dependencies:

    cd web
    npm install
    
  8. Launch frontend service:

    npm run dev
    

    The following output confirms a successful launch of the system:

    RAGFlow web interface

  9. Stop RAGFlow front-end and back-end service after development is complete:

    pkill -f "ragflow_server.py|task_executor.py"
    

📚 Documentation

📜 Roadmap

See the RAGFlow Roadmap 2026

🏄 Community

🙌 Contributing

RAGFlow flourishes via open-source collaboration. In this spirit, we embrace diverse contributions from the community. If you would like to be a part, review our Contribution Guidelines first.

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