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ExportWorker N+1 query in pointcloud — timeout on shutdown

Service
cupixworks-api
Occurrences
438
Status
Reported
Confidence
80%
Actionability
24%
Cluster ID
0d168761-ccba-4652-b1c9-4b2100d8c555
First Seen
2026-04-08 05:15 UTC
Last Seen
2026-05-12 03:55 UTC
Actions

ExportWorker N+1 query in pointcloud — timeout on shutdown

What Happened#

2026-04-23 07:20~08:15 UTC 사이, cupixworks-api 서비스의 ExportWorker가 migration id(1252)의 데이터베이스 export 작업 중 반복적으로 Sidekiq::Shutdown 예외를 수신했다. 약 5분 간격으로 Sidekiq 프로세스가 종료되면서 read_capture 단계에서 실행 중이던 MySQL 쿼리가 중단되었고, 12회 연속 실패 후 대량의 retry job이 동시에 쌓여 concurrency 충돌이 발생했다.

Quick Facts#

Field Value
exception.class Sidekiq::Shutdown
exception.message Sidekiq::Shutdown
top_frame mysql2/client.rb:148:in '_query'
runtime Ruby 3.3.0, Rails 7.2.2, Sidekiq 7.3.9
env production, us-west-2

Timeline#

  1. 07:18:43Z — ExportWorker 최초 실행 시작 (migration id 1252, facility 9168)
  2. 07:20:31Z — 첫 번째 Sidekiq::Shutdown 발생 (read_capture 단계, ~2분 실행 후)
  3. 07:25:27Z ~ 08:15:31Z — 약 5분 간격으로 11회 추가 Sidekiq::Shutdown 반복 (모두 read_capture 단계)
  4. 08:22:19Z — 누적된 retry job들이 동시 실행되어 "sidekiq is already running" 경고 대량 발생
  5. 08:22:19Zretries exhausted 로그 없음 — job이 최종 실패 없이 retry 큐에 남아있는 상태

Scoring#

Confidence 80% · Actionability 24%

Confidence#

Dimension Score Detail
Evidence completeness 5/5 21 code refs, 5 log queries
Code path explicitness 3/3 21 file:line refs
Log evidence 2/3 section, query
RCA structure 3/3 3/3 sections
Revision history 0/3 0 revision(s)
Agent execution 3/3 success

Actionability#

Dimension Score Detail
Fix complexity 1/5 critical
Affected files 1/5 29 file(s)
Single repo 1/3 2 service(s)
Immediate actions 0/3 absent
Testability 0/3 no test info
External dependency 3/3 no external deps
Data migration 0/3 migration needed