spark-optimization SKILL.md skillA
spark-optimization from wshobson/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wshobson/agents/spark-optimization@git:20260522.be57c0bPins git:20260522.be57c0b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wshobson/agents
- Path
plugins/data-engineering/skills/spark-optimization/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260522.be57c0b, committed May 22, 2026
- First version recorded
- Dec 16, 2025
- Size
- 3,160 bytes
- Repository stars
- 42,320
- License
- MIT
Optimize Apache Spark jobs with partitioning, caching, shuffle optimization, and memory tuning. Use when improving Spark performance, debugging slow jobs, or scaling data processing pipelines.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Apache Spark Optimization
Production patterns for optimizing Apache Spark jobs including partitioning strategies, memory management, shuffle optimization, and performance tuning.
## When to Use This Skill
- Optimizing slow Spark jobs
- Tuning memory and executor configuration
- Implementing efficient partitioning strategies
- Debugging Spark performance issues
- Scaling Spark pipelines for large datasets
- Reducing shuffle and data skew
## Core Concepts
### 1. Spark Execution Model
```
Driver Program
↓
Job (triggered by action)
↓
Stages (separated by shuffles)
↓
Tasks (one per partition)
```
### 2. Key Performance Factors
| Factor | Impact | Solution |
| ----------------- | --------------------- | ----------------------------- |
| **Shuffle** | Network I/O, disk I/O | Minimize wide transformations |
| **Data Skew** | Uneven task duration | Salting, broadcast joins |
| **Serialization** | CPU overhead | Use Kryo, columnar formats |
| **Memory** | GC pressure, spills | Tune executor memory |
| **Partitions** | Parallelism | Right-size partitions |
…Read the whole file at its exact version.
How to install
mdr add wshobson/agents/spark-optimization@sha256:6af24df5e512113dThe line at the top of this page pins the label git:20260522.be57c0b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_g54ukif2ohjrocgy)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Dec 16, 2025 and May 22, 2026, about one every 52 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260522.be57c0b latest | 2026-05-22 | be57c0b | 3,160 B | A | view · diff |
| git:20260307.47a5dbc | 2026-03-07 | 47a5dbc | 12,770 B | A | view · diff |
| git:20260119.5684887 | 2026-01-19 | 5684887 | 13,052 B | A | view · diff |
| git:20251216.01d93fc | 2025-12-16 | 01d93fc | 12,889 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3160 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
wshobson/agents · 42,320 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_g54ukif2ohjrocgy GET https://markdownregistry.com/api/v1/resolve?ref=wshobson/agents/spark-optimization GET https://markdownregistry.com/api/v1/blob/6af24df5e512113dac3238dcd9ed862c0a866ff91af92b95d024cf995959ac01
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.