Apache Beam Playground

Write, modify, and execute Python code sandboxes directly in your browser.

Preset Template:

Python Code Editor

Browser Wasm Status:Not Loaded

Terminal Output Console

Ready to run pipeline.

Press "Run Pipeline" to execute.

Status: IDLEUTF-8 Console

Interactive Playground Guidelines & Wasm Setup

Read these instructions to understand the sandbox environment.

Wasm environment preparation steps:

Make sure you have a stable network connection. Wasm mode will download a **~15MB python compiler package** directly to your browser tab.
Wait until the compiler status indicator in the editor footer displays **Status: Ready** before clicking run.

Playground Sandbox Environment Details:

Transparency Notice: BeamPlayArena uses a lightweight educational runtime that implements the core Apache Beam programming model for interactive learning in the browser. Some advanced SDK features and cloud integrations are intentionally unavailable.
In-browser Execution: The standard apache-beam pip package relies on heavy native C-libraries that cannot compile inside browser WebAssembly. We dynamically inject an in-browser educational mock layer to execute code (Create, Map, Filter, FlatMap, Combine, ParDo, and state trackers) natively.

Interactive Playground Quick-Start Guide

1. Choose or Write Code

Select one of the templates, or write custom Python code. All templates (Map/Filter, WordCount, Stateful counters, Windows) will run directly inside the browser WebAssembly.

2. Select Execution Engine

The code compiles completely in your browser memory via Pyodide WebAssembly without sending payloads to external cloud servers.

3. Read Sandbox Output

Check the console streams. Outputs printed via standard print() statements appear in stdout, while runner warnings and tracebacks map to stderr.