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Modern Etl Testing with AI: Cloud Data Platforms, Big Data, Streaming, Enterprise Pipelines & Interview Preparation - VOLUME 2
Paperback
Series: Qa Testing, Book 3
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Publisher: Independently Published
Pages: 268
Weight: 0.80
Height: 0.56 Width: 6.00 Depth: 9.00
Language: English
Modern ETL Testing with AI - Volume 2 picks up where foundational ETL testing leaves off. If you can already validate a row count, compare source and target, and write a solid Python assertion, this book takes you the rest of the way: into cloud data warehouses, data lakes, Spark, Kafka, CDC pipelines, enterprise CI/CD, and the growing role of AI agents in building and maintaining test coverage.
Written for testers, data engineers, and QA professionals now responsible for pipelines spanning multiple clouds, near-real-time streams, and audit-grade reporting.
What's Inside- Cloud Data Platforms: Test Snowflake, Redshift, BigQuery, and Synapse for clustering drift, materialized view staleness, and cost-aware validation using zero-copy cloning and time travel.
- Data Lakes & Storage: Catch the small-file problem, validate Delta Lake/Iceberg/Hudi schema enforcement, and test object storage access control.
- Orchestration: Build three-layer test suites for Airflow DAGs, catch trigger-rule misconfigurations, and test Glue, Data Factory, and Dataflow pipelines.
- Big Data & Streaming: Diagnose data skew in Spark, test Kafka delivery guarantees and idempotent consumers, and validate CDC pipelines for snapshot gaps, tombstones, and out-of-order events.
- Enterprise Practices: Manage test data with masking and synthetic generation, enforce data contracts, build observability, design CI/CD with canary deployments, and performance-test at scale.
- AI-Powered Testing: Use AI agents to generate test coverage across hundreds of tables with mandatory human review, apply LLM-assisted triage to correlate anomalies, and build a governed, audited AI-augmented framework.
- Real Enterprise Case Studies: Three full case studies-a multi-cloud retail platform, a real-time banking fraud detection system, and a HIPAA-governed healthcare data lake-show how these techniques combine under real business and regulatory pressure.
- Interview Preparation: A large bank of interview questions across beginner through lead/architecture levels, covering cloud, Spark, Kafka, Snowflake, dbt, Airflow, CI/CD, and AI-specific topics, plus four complete mock interview transcripts with evaluator commentary.
Every chapter follows the same discipline: explain why the problem matters before showing how to solve it, ground every technique in runnable SQL, Python, PySpark, and YAML code, and close with testing checkpoints you can use as a QA checklist. Real-world examples throughout-a skewed join that broke a telecom billing pipeline, a silent delete gap in an e-commerce inventory feed, a currency conversion bug caught by a canary deployment-show how these techniques catch real, costly defects before they reach production.
The AI chapters take a disciplined approach: agents accelerate test generation and anomaly triage, but every consequential decision stays under human review, with clear guardrails against AI quietly locking in bugs.
Who This Book Is For- ETL testers and QA engineers moving from foundational to cloud-scale, enterprise-scale testing
- Data engineers building reliable, well-tested pipelines on AWS, Azure, or GCP
- Senior and lead engineers preparing for cloud, big data, or architecture-level interviews
- Teams evaluating how to responsibly adopt AI-assisted testing and observability
Whether you're preparing for your next interview, building a testing practice for a growing data platform, or leading a team through the shift to cloud-native, AI-augmented data engineering, this volume gives you practical, tested, immediately usable techniques to get there.
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