Marcin Szymaniuk
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where they keep going back
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on a stage with
who talks about the same things
- Holden Karau39 talks
- Dean Wampler29 talks
- Yousry Mohamed4 talks
- Andy Petrella14 talks
- Ronert Obst4 talks
- Matei Zaharia30 talks
| title | conference | date |
|---|---|---|
| Spark Performance Tuning and Troubleshooting | Big Data Conference Europe 2025 | 2025-11-19 |
Shows concrete fixes and measured wins: a UDF that makes an HTTPS call is slow because of connection-per-record and becomes fast when a single connection is… | ||
| Advanced Prompt Engineering and Beyond | Big Data Conference Europe 2025 | 2025-11-19 |
Claims specific performance gains from techniques and clear failure modes for production: shows retrieval pipelines using Hyde and ColBERTv2 and re‑ranking… | ||
| Optimising Apache Spark and SQL for Improved Performance | Big Data & RPA Conference Europe 2024 | 2024-11-19 |
Shows concrete failures and fixes: Spark 3 still leaves cases where a single partition swallows most data — 100 GB input becomes a 67 GB partition across 1,000… | ||
| AI Chats: Challenges in Business Integration | Big Data & RPA Conference Europe 2024 | 2024-11-19 |
Shows runnable code using LangChain and vector databases to do sentiment tagging and RAG retrieval, measures retrieval with precision and recall on a golden… | ||
| Effective Data Migration: Challenges & Success | DSC Europe 24 | 2024-11-18 |
Practical guidance for migrating data platforms to public or hybrid clouds with concrete tradeoffs and fixes: choose tools to match team skills, build… | ||
| ChatGPT, LLMs, and LangChains - A Beginner's Guide | SREday London 2024 | 2024-09-19 |
Covers building end-to-end LLM systems with concrete tools: OpenAI chat API, LongChain chains that pipe prompts and outputs, connectors to PostgreSQL and… | ||
| ChatGPT & LLMs: A Practical Starter's Guide to Language Chains | Voxxed Days Luxembourg 2024 | 2024-06-20 |
Shows live code using OpenAI + LangChain, Weaviate-style vectors, lsmith logging and Nemo guardrails to build concrete features: a batch sentiment labeler that… | ||
| DataFrames in Apache Spark - the analysts perspective | Berlin Buzzwords 2018 | 2018-06-11 |
Practical debugging of Spark DataFrame failures with concrete fixes and numbers: shows partitionBy can produce thousands of tiny HDFS files when 8,000 input… | ||
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