Fix atomic processing bumping a lock_version

app/models/commit_status.rb

@@ -189,8 +189,10 @@ class CommitStatus < ApplicationRecord
   end
 
   def self.update_as_processed!
-    # Marks items as processed, and increases `lock_version` (Optimisitc Locking)
-    update_all('processed=TRUE, lock_version=COALESCE(lock_version,0)+1')
+    # Marks items as processed
+    # we do not increase `lock_version`, as we are the one
+    # holding given lock_version (Optimisitc Locking)
+    update_all(processed: true)
   end
 
   def self.locking_enabled?

app/services/projects/update_pages_service.rb

@@ -2,8 +2,6 @@
 
 module Projects
   class UpdatePagesService < BaseService
-    include Gitlab::OptimisticLocking
-
     InvalidStateError = Class.new(StandardError)
     FailedToExtractError = Class.new(StandardError)
 
@@ -25,8 +23,8 @@ module Projects
 
       # Create status notifying the deployment of pages
       @status = create_status
-      retry_optimistic_lock(@status, &:enqueue!)
-      retry_optimistic_lock(@status, &:run!)
+      @status.enqueue!
+      @status.run!
 
       raise InvalidStateError, 'missing pages artifacts' unless build.artifacts?
       raise InvalidStateError, 'build SHA is outdated for this ref' unless latest?
@@ -53,7 +51,7 @@ module Projects
     private
 
     def success
-      retry_optimistic_lock(@status, &:success)
+      @status.success
       @project.mark_pages_as_deployed
       super
     end
@@ -63,7 +61,7 @@ module Projects
       log_error("Projects::UpdatePagesService: #{message}")
       @status.allow_failure = !latest?
       @status.description = message
-      retry_optimistic_lock(@status) { |status| status.drop(:script_failure) }
+      @status.drop(:script_failure)
       super
     end
 

changelogs/unreleased/fix-atomic-processing-lock-version.yml

+---
+title: Fix atomic processing bumping a lock_version
+merge_request: 32914
+author:
+type: fixed

lib/api/commit_statuses.rb

@@ -106,7 +106,7 @@ module API
             status.enqueue!
           when 'running'
             status.enqueue
-            Gitlab::OptimisticLocking.retry_lock(status, &:run!)
+            status.run!
           when 'success'
             status.success!
           when 'failed'