Cheap OpenTelemetry lakehouses with parquet, duckdb and Iceberg

What if all your observability data was just parquet files? If you work in SRE, DevOps, or observability it might be time to introduce yourself to the data engineers and understand what&#x27;s going on with lakehouses, columnar storage, and a bewildering number of projects from the Apache Foundation. Some of the most interesting developments in observability in late 2025 are coming from analytics.…