Apache Pinot + Memex: Complete MCP Integration

Apache Pinot is a MCP server that MCP server for Apache Pinot real-time analytics database with SQL query capabilities and metadata access.

When integrated with Memex, you can:

• List and inspect Apache Pinot tables
• View and analyze table segments
• Retrieve and analyze table schemas

This guide provides step-by-step instructions to set up Apache Pinot in Memex, including configuration, examples, and troubleshooting.

What You'll Achieve

After completing this setup:

• Apache Pinot will be fully integrated and operational
• You can use Apache Pinot tools directly in Memex
• All Apache Pinot capabilities will be available for your workflows
• Access to 5 different tools

Prerequisites

Before starting, ensure you have:

• Apache Pinot broker hostname
• Apache Pinot broker port
• Memex installed and configured
• Compatible operating system (Desktop (macOS), Desktop (Windows), Desktop (Linux), Web Platform (Private Beta))

Installation

Step 1: Install Apache Pinot

Configuration

Step 2: Configure Memex

1. Open Memex settings
2. Navigate to MCP server configuration
3. Add Apache Pinot server with appropriate settings
4. Save and restart if needed

Examples

Once configured, you can use Apache Pinot in Memex:

List All Tables

Get overview of available Pinot tables

Ask Memex: "Show me all the tables available in the Pinot cluster"

Expected Result: List of table names with basic metadata and schema information

Execute Analytics Query

Run SQL query for real-time analytics

Ask Memex: "SELECT COUNT(*) FROM events WHERE timestamp > now() - 3600000"

Expected Result: Query results showing event count for last hour

Analyze Table Structure

Get detailed schema information for a table

Ask Memex: "Show me the schema and structure of the user_events table"

Expected Result: Table schema with column names, types, and index information

Generate Data Visualization

Create histogram plots from query results

Ask Memex: "Create a histogram showing user activity distribution by hour"

Expected Result: Histogram visualization with data aggregated by time buckets

Testing Your Setup

1. Launch Memex
2. Verify Apache Pinot is available in the tools list
3. Test basic Apache Pinot functionality

Troubleshooting

Common Issues

uv Command Not Found

Symptoms: Command not found error, uv: command not found

Cause: uv package manager not installed

Solution:

• Install uv using: curl -LsSf https://astral.sh/uv/install.sh | sh
• Restart terminal or source shell configuration
• Verify installation with: uv --version

Pinot Connection Failed

Symptoms: Connection refused, Broker unreachable, Network timeout

Cause: Invalid Pinot broker configuration or cluster not running

Solution:

• Verify PINOT_BROKER_HOST and PINOT_BROKER_PORT in .env file
• Check Pinot cluster is running and accessible
• Test connection: telnet <broker_host> <broker_port>
• Ensure firewall allows connections to Pinot broker

Environment Variables Not Loaded

Symptoms: Config missing errors, Default values being used

Cause: .env file not found or incorrectly formatted

Solution:

• Create .env file in repository root directory
• Copy from .env.example and modify values
• Ensure no spaces around = in variable assignments
• Restart MCP server after configuration changes

Claude Desktop Not Recognizing Server

Symptoms: Server not appearing, Connection errors in Claude

Cause: Incorrect claude_desktop_config.json configuration

Solution:

• Verify path to uv binary in command field
• Ensure correct path to mcp-pinot repository
• Restart Claude Desktop after configuration changes
• Check Claude Desktop logs for error messages

MCP Server Creation Fails

Symptoms: Server generation errors, Deployment failures, Tool discovery issues

Cause: Insufficient context or invalid server specifications

Solution:

• Provide more specific details about server requirements
• Check that API credentials are correctly configured
• Review Memex logs in Control Center for detailed error messages
• Use existing templates as starting points for complex servers
• Ensure local development environment has necessary dependencies

Template Detection Not Working

Symptoms: .memex/rules.md not loaded, Generic responses instead of specialized behavior

Cause: Repository not properly cloned or rules file missing

Solution:

• Verify template was fully cloned from GitHub
• Check that .memex/rules.md exists in project root
• Re-invoke template through Memex interface
• Restart Memex to refresh project context

Installed MCP Servers Not Responding

Symptoms: Server appears in list but tools unavailable, Connection timeouts, Empty tool lists

Cause: Server not properly started or configuration issues

Solution:

• Check server status in Control Center
• Verify server endpoints are accessible
• Reinstall server from MCP Directory
• Review server logs for startup errors
• Ensure required environment variables are set

High Token Usage

Symptoms: Rapid credit consumption, Context length warnings, Slow responses

Cause: Too many MCP servers active or inefficient prompting

Solution:

• Use templates to reduce token usage by 10x
• Disable unused MCP servers in Control Center
• Leverage project-specific rules for focused context
• Break complex tasks into smaller conversations

Cross-Platform Compatibility

Symptoms: Server works on desktop but not web, Platform-specific errors

Cause: Different capabilities between desktop and web versions

Solution:

• Use desktop app for full MCP server creation capabilities
• Web version (beta) has limited server building features
• Contact [email protected] for web platform support
• Consider Streamable HTTP servers for better web compatibility

Apache Pinot not appearing in Memex

Symptoms: Server not listed, Tools not available

Cause: Configuration or installation issue

Solution:

• Verify configuration syntax
• Check Apache Pinot installation
• Restart Memex
• Check logs for error messages

Next Steps

Now that Apache Pinot is integrated with Memex:

• Explore all Apache Pinot capabilities through Memex
• Check out other MCP servers that work with Memex
• Join the MCP community for tips and support
• Consider contributing to Apache Pinot development

Need Help?

• Search for Apache Pinot documentation
• Check the Memex MCP guide
• Join the MCP community discussions