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Race condition running `craft project-config/sync` #4136

jwilm opened this Issue Apr 12, 2019 · 0 comments


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jwilm commented Apr 12, 2019


As part of our production infra, we run a couple instances of CraftCMS to ensure availability. Our original deployment process had each instance running craft project-config/sync at startup. We changed that after finding this caused a race where duplicate sections and entries were being generated in the database. The net effect was that content for such entries could not be modified.

Steps to reproduce

  1. Add a section/entry to local dev environment
  2. Run project-config/sync twice in parallel against a separate database

Given that it's a race condition, it may take a few attempts to reproduce.

Additional info

  • Craft version: 3.1.14
  • PHP version: 7.0.33
  • Database driver & version: PostgreSQL 10.3
  • Plugins & versions: n/a

@andris-sevcenko andris-sevcenko self-assigned this Apr 13, 2019

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