1 files changed, 12 insertions, 1 deletions
diff --git a/app/workers/update_head_pipeline_for_merge_request_worker.rb b/app/workers/update_head_pipeline_for_merge_request_worker.rb
index 0a2e9b63578..9614daf1976 100644
--- a/app/workers/update_head_pipeline_for_merge_request_worker.rb
+++ b/app/workers/update_head_pipeline_for_merge_request_worker.rb
@@ -8,8 +8,19 @@ class UpdateHeadPipelineForMergeRequestWorker
     pipeline = Ci::Pipeline.where(project: merge_request.source_project, ref: merge_request.source_branch).last
 
     return unless pipeline && pipeline.latest?
-    raise ArgumentError, 'merge request sha does not equal pipeline sha' if merge_request.diff_head_sha != pipeline.sha
+
+    if merge_request.diff_head_sha != pipeline.sha
+      log_error_message_for(merge_request)
+
+      return
+    end
 
     merge_request.update_attribute(:head_pipeline_id, pipeline.id)
   end
+
+  def log_error_message_for(merge_request)
+    Gitlab::EnvironmentLogger.error(
+      "Outdated head pipeline for active merge request: id=#{merge_request.id}, source_branch=#{merge_request.source_branch}, diff_head_sha=#{merge_request.diff_head_sha}"
+    )
+  end
 end