Spark EventLog MCP Server

中文版本 | English

A comprehensive Spark event log analysis MCP server built on FastMCP 2.0 and FastAPI, providing in-depth performance analysis, resource monitoring, and optimization recommendations.

Features

• 🌐 FastMCP & FastAPI Integration: MCP protocol support and analysis report APIs powered by FastAPI & FastMCP
• 📊 Performance Analysis: Shuffle analysis, resource utilization monitoring, task execution analysis
• 📈 Visual Reports: Auto-generated interactive HTML reports with direct browser access
• ☁️ Multiple Data Sources: Support for S3, HTTP URLs, and local files
• 💡 Intelligent Optimization: Automated optimization recommendations based on analysis results

Quick Start

MCP Client Integration

stdio Mode (Recommended for Local Development)

{
  "mcpServers": {
    "spark-eventlog": {
      "command": "uv run python",
      "args": ["/path/to/spark-eventlog-mcp/start.py"],
      "env": {
        "MCP_TRANSPORT": "stdio"
      }
    }
  }
}

HTTP Mode

1. Start HTTP Server:

export MCP_TRANSPORT=streamable-http
export MCP_HOST=localhost
export MCP_PORT=7799

uv run python start.py

2. Configure Remote MCP:

{
  "mcpServers": {
    "spark-eventlog": {
      "url": "http://localhost:7799/mcp",
      "type": "http"
    }
  }
}

3. Access Services:

• API Documentation: http://localhost:7799/docs
• Health Check: http://localhost:7799/health
• Reports List: http://localhost:7799/api/reports
• MCP Endpoint: http://localhost:7799/mcp

Analysis Examples

Project Structure

spark-eventlog-mcp/
├── src/spark_eventlog_mcp/
│   ├── server.py              # FastAPI + MCP integrated server
│   ├── core/
│   │   └── mature_data_loader.py    # Data loader (S3/URL/Local)
│   ├── tools/
│   │   ├── mature_analyzer.py       # Event log analyzer
│   │   └── mature_report_generator.py  # HTML report generator
│   ├── models/
│   │   ├── schemas.py        # Pydantic data models
│   │   └── mature_models.py  # Analysis result models
│   └── utils/
│       └── helpers.py         # Utility functions and logging config
├── report_data/               # Generated reports storage
├── start.py                   # Launch script
├── README.md                 # This file (English)
└── README_zh.md              # Chinese version

MCP Tools

RESTful API Endpoints

Basic Endpoints

• GET / - Service information
• GET /health - Health check
• GET /docs - API documentation (Swagger UI)

Report Management

• GET /api/reports - List all reports
• GET /api/reports/{filename} - View HTML report
• GET /reports/{filename} - Direct access to report files
• DELETE /api/reports/{filename} - Delete report

MCP Tool Calls

• POST /mcp - MCP protocol endpoint

Configuration

Environment Variables

# Server Configuration
MCP_TRANSPORT=http          # stdio or streamable-http
MCP_HOST=0.0.0.0           # HTTP mode listen address
MCP_PORT=7799              # HTTP mode port
LOG_LEVEL=INFO             # Log level

# AWS S3 Configuration (Optional)
# Not needed if AWS CLI is configured or running on EC2 with appropriate IAM role
AWS_ACCESS_KEY_ID=xxx
AWS_SECRET_ACCESS_KEY=xxx
AWS_DEFAULT_REGION=us-east-1

# Cache Configuration
CACHE_ENABLED=true
CACHE_TTL=300

# Default Data Source
DEFAULT_SOURCE_TYPE=s3  # s3, url, or local

Log Format

Logs contain detailed debugging information:

2025-12-05 10:30:45 - INFO     - [server.py:243:generate_report] - spark-eventlog-mcp - Generating html report

Format: Timestamp - Level - [Filename:Line:Function] - Logger Name - Message

Data Source Support

S3

{
    "source_type": "s3",
    "path": "s3://bucket-name/path/to/eventlogs/"
}

HTTP URL

{
    "source_type": "url",
    "path": "https://example.com/eventlog.zip"
}

Local File

{
    "source_type": "local",
    "path": "/path/to/local/eventlog.zip"
}

Report Features

Generated HTML reports include:

• 📊 Application Overview (task counts, success rate, duration)
• 💻 Executor Resource Usage Distribution
• 🔄 Shuffle Performance Analysis
• ⚖️ Data Skew Detection
• 💡 Intelligent Optimization Recommendations
• 📈 Interactive Visualizations

Troubleshooting

Port Already in Use

# Change port
MCP_PORT=9090 python start.py

Missing Dependencies

# Reinstall dependencies
uv pip install -e .

AWS Credentials Issues

# Check AWS configuration
aws configure list

# Or configure in .env
AWS_ACCESS_KEY_ID=xxx
AWS_SECRET_ACCESS_KEY=xxx

Debug Logging

# Enable DEBUG logs
LOG_LEVEL=DEBUG uv run python start.py

Tech Stack

• FastMCP 2.0: MCP protocol support
• FastAPI: RESTful API framework
• Pydantic: Data validation and serialization
• Plotly: Interactive charts
• boto3: AWS S3 integration
• aiofiles: Async file operations

Development

# Clone repository
git clone <repository-url>
cd spark-eventlog-mcp

# Install development dependencies
uv pip install -e .

# MCP Inspector - stdio mode
MCP_TRANSPORT="stdio" npx @modelcontextprotocol/inspector uv run python start.py

# MCP Inspector - HTTP mode
MCP_TRANSPORT="streamable-http" uv run python start.py
npx @modelcontextprotocol/inspector --cli http://localhost:7799 --transport http --method tools/list

Support

• Documentation: Check /docs API documentation
• Issues: Submit GitHub Issues
• Reference: FastMCP Documentation