PLEX-2791 Improve LogPoller Heath Observability#436
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May 15, 2026 12:31
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Problem
batchInsert Retry Path Can Silently Repeat Failed Persistence
The ORM batchInsert helper only shrinks the batch size when the returned error matches context.DeadlineExceeded and never below 500 rows. If a large insert fails for a size-sensitive database reason that does not surface as DeadlineExceeded, batchInsert returns the error immediately even though smaller sub-batches might succeed. Since the pollAndSaveLog function treats insert failures as retry-later and the main loop resumes from SelectLatestBlock+1, the poller can repeatedly recreate the same failing insert shape and stall ingestion progress.
Fix
Expose a general metric that signals if LogPoller is stuck.