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arq/worker.py

@@ -449,6 +449,8 @@ async def start_jobs(self, job_ids: List[bytes]) -> None:
                 score = await pipe.zscore(self.queue_name, job_id)
                 if ongoing_exists or not score or score > timestamp_ms():
                     # job already started elsewhere, or already finished and removed from queue
+                    # if score > ts_now,
+                    # it means probably the job was re-enqueued with a delay in another worker
                     self.job_counter = self.job_counter - 1
                     self.sem.release()
                     logger.debug('job %s already running elsewhere', job_id)