Fsdss-536 Jun 2026

| Item | Details | |------|---------| | | FSDSS‑536 | | Title | Intermittent failure of the Real‑Time Transaction Auditing Service (RT‑TAS) | | Reported By | Jane Doe – Operations Monitoring (2026‑04‑10 08:14 UTC) | | Priority | P2 – High (business‑critical service) | | Status | Resolved – Closed (2026‑04‑15 16:02 UTC) | | Root Cause | Race condition in the Kafka consumer offset commit logic triggered by a recent schema‑registry update. | | Business Impact | ~2 % of daily transaction records were not logged for a 4‑hour window, causing audit‑trail gaps and a temporary compliance alert. | | Resolution | Deploy hot‑fix v3.2.7, adjust consumer configuration, and add additional offset‑validation monitoring. | | Next Steps | Implement automated regression test for offset commits; schedule a post‑mortem review. |

CREATE TABLE sync_jobs ( id UUID PRIMARY KEY DEFAULT gen_random_uuid(), user_id UUID NOT NULL, status TEXT NOT NULL, last_checked TIMESTAMP WITH TIME ZONE DEFAULT now(), details JSONB, created_at TIMESTAMP WITH TIME ZONE DEFAULT now(), updated_at TIMESTAMP WITH TIME ZONE DEFAULT now() ); CREATE INDEX ON sync_jobs(user_id); FSDSS-536

| Time (UTC) | Event | |------------|-------| | | Alert from Prometheus: RT‑TAS consumer lag > 5 min (threshold 30 s). | | 08:20 | Ops on‑call acknowledges; initial investigation shows consumer offsets not committing. | | 08:45 | Service health dashboard shows 0 % ingestion for partitions 2‑4. | | 09:10 | Manual offset reset performed; ingestion resumes on partition 2 only. | | 09:45 | Incident escalated to Platform Engineering (PE). | | 10:30 | PE identifies that auto.commit.interval.ms was set to 0 in the new config, disabling auto‑commit. | | 11:15 | Hot‑fix v3.2.7 built – re‑enables auto‑commit and adds a “commit‑retry” wrapper. | | 12:00 | Hot‑fix rolled out to all 6 nodes (rolling update, 5 min per pod). | | 13:45 | Monitoring shows consumer lag back to normal (< 50 ms). | | 14:00 | Audit‑log gap analysis launched – 2 % of transactions (≈ 3 M records) missing timestamps between 08:14–12:05. | | 15:30 | Data‑reconciliation job re‑processes missing events from the “dead‑letter” Kafka topic. | | 16:02 | All services stable; ticket marked Resolved . | | Item | Details | |------|---------| | |

In the depths of an unexplored archive, there was a catalog entry known as FSDSS-536. Few knew what it meant or what it referred to. Some thought it a key to unlocking a new understanding of the world, while others believed it to be nothing more than a misplaced code in a vast digital library. | | Next Steps | Implement automated regression