GitHub user 400Ping created a discussion: Apache Mahout Hackathon @ Community over Code Glasgow 2026: Colab notebook, slides and tasks
Welcome to the Apache Mahout hackathon at Community over Code Glasgow 2026! - **When:** Tuesday 13 October, 15:00–18:40 - **Where:** The Wee Dram Room - **Mentors:** Andrew Musselman, Krishna Dave and Mahout committers in the room - **Help:** ask a mentor, the `#hackathon` channel on apachecon.slack.com, or [email protected] ## Materials | | | |---|---| | **Colab notebook** | [Open in Colab](https://colab.research.google.com/github/apache/mahout/blob/7aa13953dc208f7a700dc0e9a5a9ad7bbdd3193a/website/static/hackathon/mahout_hackathon_colab.ipynb) · [download .ipynb](https://raw.githubusercontent.com/apache/mahout/7aa13953dc208f7a700dc0e9a5a9ad7bbdd3193a/website/static/hackathon/mahout_hackathon_colab.ipynb) | | **Kickoff slides** | [PDF](https://raw.githubusercontent.com/apache/mahout/7aa13953dc208f7a700dc0e9a5a9ad7bbdd3193a/website/static/hackathon/mahout-hackathon-deck.pdf) · [PPTX](https://raw.githubusercontent.com/apache/mahout/7aa13953dc208f7a700dc0e9a5a9ad7bbdd3193a/website/static/hackathon/mahout-hackathon-deck.pptx) | | **Task sheet** | [mahout-hackathon-tasks.md](https://github.com/apache/mahout/blob/7aa13953dc208f7a700dc0e9a5a9ad7bbdd3193a/website/static/hackathon/mahout-hackathon-tasks.md) | | **Event page** | https://events.apache.org/events/2026/community-over-code/mahout.html | The same content is landing on https://mahout.apache.org/blog via #1513. ## Colab setup first (1 minute) Colab defaults to Python 3.13; Mahout 0.6.0 needs 3.10–3.12. 1. **Runtime > Change runtime type** 2. **Runtime version:** `2026.07` (Python 3.12), not "Latest" 3. **Hardware accelerator:** `T4 GPU` 4. **Save**, then **Runtime > Run all** Spend at most 10 minutes on Parts 0–3, then pick a task. ## Tasks (1–2 hours each, no GPU, each ends in a PR with a test) **Track A: Qumat (Python only)** | # | Issue | Task | |---|---|---| | A1 | #1506 | Clear `ValueError` for an unknown backend name | | A2 | #1507 | Unsupported `simulator_type` should raise instead of `print()` | | A3 | #1508 | Cirq backend ignores the initialized simulator | | A4 | #1509 | Reusing a parameter name on two gates fails on Qiskit only | | A5 | #1510 | `create_empty_circuit()` without `num_qubits` differs per backend | | A6 | #1511 | Add one missing gate per person: S, S†, T†, CZ or Phase | | A7 | #1512 | Python 3.13 support for the `qumat` package | **Track B: QDP** (B1–B3 pure Python; B4–B6 Rust, only if you already have `cargo`, start `cargo build` right away) | # | Issue | Task | |---|---|---| | B1 | #1469 | `QdpBenchmark` does not validate builder argument ranges | | B2 | #1331 | QDP tests should skip, not error, without a GPU | | B3 | #1468 | File loader ignores the configured batch limit | | B4 | #1472 | Read LZ4-compressed Feather files (Rust) | | B5 | #787 | NumPy file size check to prevent OOM (Rust) | | B6 | #1436 | `StreamingProducer`: `VecDeque` for O(1) buffer advance (Rust) | ## Workflow ```bash git clone https://github.com/<you>/mahout.git && cd mahout pip install uv uv sync uv run pre-commit install uv run pytest testing/qumat ``` Comment on the issue to claim it, branch, make the change with a test, open a PR that links the issue, and ping a mentor for the committer approval. Your PR does not have to be finished by 18:40. Have fun, and thanks for hacking on Apache Mahout! GitHub link: https://github.com/apache/mahout/discussions/1518 ---- This is an automatically sent email for [email protected]. To unsubscribe, please send an email to: [email protected]
