TudorandClaude Opus 5
e236669fde
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The annual DAG died with a BrokenPipeError from Meltano's log writer, which is several frames from the cause: target-postgres exited first and the tap saw its stdout close. The tap declared primary_keys = [urn, ...] while emitting urn=None for the national rows, and target-postgres turns primary_keys into a NOT NULL constraint. The first national row of the run failed the insert and took the loader with it. Every other tap in this repo keys on non-null columns. Carrying two grains in one stream was the actual mistake, so the fix is to separate them rather than paper over the null: four streams now, with ees_ks4/ks5_destinations_national carrying no urn column at all — a school identifier that is null in every row is a grain mismatch, not a column. The staging models split the same way and the national mart reads the new pair instead of filtering `where urn is null`. Verified against the live API: the school stream yields 135,240 rows over 4,508 schools with no duplicate keys, no null key columns and all 31,382 suppression sentinels intact; the national streams yield 30 and 33 rows with no urn column. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BvdDKvFFSZuMVDH5fEyTob