Metadata Platforms in 2026: DataHub, OpenMetadata, Atlan, and Catalog Convergence
How the technical catalog and the metadata platform are converging in 2026, and how to arrange the two layers for a lakehouse.
The archive
Writing, page 6
652 posts on Apache Iceberg, lakehouse architecture, data engineering and applied AI.
Moving Iceberg Tables Between Catalogs Without Rewriting Data
Why moving Iceberg tables between catalogs is a pointer copy, and the protocol that makes a cutover safe for one table or thousands.
Logs, Traces, and Metrics as Tables: Building an OpenTelemetry Data Lake on Iceberg
Building an OpenTelemetry data lake on Iceberg: schemas for spans, logs, and metrics, ingestion, query patterns, and retention.
Orchestration in 2026: Airflow 3 vs Dagster vs Prefect vs Event-Driven
Where Airflow 3, Dagster, Prefect, and event-driven triggering stand for lakehouse pipelines in 2026, after the Prefect acquisition of Dagster.
Postgres Meets the Lakehouse: pg_lake, pg_duckdb, and When Postgres Is Enough
What pg_lake, pg_duckdb, and pg_mooncake do at the Iceberg level, and honest thresholds for when Postgres is enough.
Schema Registries and Event Schemas: Avro, Protobuf, and JSON Schema on the Way Into the Lakehouse
How Avro, Protobuf, and JSON Schema evolve through a registry, and how that maps to the schema evolution rules of Iceberg.
Storage-Partitioned Joins and the Bucket Transform
How the spec-defined bucket transform lets engines skip the shuffle in joins, and how to set it up and keep it engaged in Spark.
Synthetic Data in the Lakehouse: Generation, Governance, and Testing
What synthetic data in a lakehouse is for, the generation methods, how to preserve fidelity, and where synthetic tables belong.
Will AI Replace Data Engineers?
What the evidence shows about whether AI replaces data engineers, which parts of the job compress, and which parts do not.
Agent-Driven Storage Tiering for Apache Iceberg: Moving Cold Data Without Breaking Queries
A background agent can move cold Iceberg partitions to cheaper tiers without breaking live queries. Heatmaps, path-safe moves, and restore paths.