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fix: null-safe getTime() calls in replication services (#3519) #3974
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🚩 Date.now() fallback for created_at could produce non-deduplicatable rows in ClickHouse
The ClickHouse
task_runs_v2table usescreated_atin both the sort key (ORDER BY (organization_id, project_id, environment_id, created_at, run_id)) and the partition key (PARTITION BY toYYYYMM(created_at)).ReplacingMergeTreededuplicates rows based on the sort key. IfcreatedAtis null for a replication event andDate.now()is used as a fallback, the fabricatedcreated_atvalue would differ from the real timestamp on any subsequent replication event (e.g., an update) for the same run. This means the two rows would have different sort keys and ClickHouse would not deduplicate them, even withFINAL. They could also land in different partitions. This is an inherent trade-off of theDate.now()approach — the alternative (crashing) would halt the entire replication pipeline. A possible improvement would be to skip the row entirely (similar to the!run.environmentType || !run.organizationIdguard atrunsReplicationService.server.ts:1032) and log a warning, rather than inserting potentially unreplaceable data. The same concern applies tosessionsReplicationService.server.tsif the sessions table has a similar schema.Was this helpful? React with 👍 or 👎 to provide feedback.