ruby-on-rails - Heroku 上的延迟作业工作者尝试连接只读追随者

Question

这是来自日志文件的实际错误：

2013-02-20T20:56:03+00:00 app[worker.1]:   SQL (11.1ms)  UPDATE "delayed_jobs" SET locked_by = null, locked_at = null WHERE (locked_by = 'host:05c659a5-86fd-46dd-b139-263e49a96171 pid:2')
2013-02-20T20:56:03+00:00 app[worker.1]: rake aborted!
2013-02-20T20:56:03+00:00 app[worker.1]: PG::Error: ERROR:  cannot execute UPDATE in a read-only transaction
2013-02-20T20:56:03+00:00 app[worker.1]: : UPDATE "delayed_jobs" SET locked_at = '2013-02-20 20:56:02.982379', locked_by = 'host:05c659a5-86fd-46dd-b139-263e49a96171 pid:2' WHERE id IN (SELECT  id FROM "delayed_jobs"  WHERE ((run_at <= '2013-02-20 20:56:02.882553' AND (locked_at IS NULL OR locked_at < '2013-02-20 16:56:02.882574') OR locked_by = 'host:05c659a5-86fd-46dd-b139-263e49a96171 pid:2') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 1 FOR UPDATE) RETURNING *

此错误也出现在关注者日志中。这就是为什么假设存在问题。延迟作业版本：3.0.5

Answer 1

最近的更新似乎出现了这个问题。有关详细信息，请参阅此 Github 问题： https ://github.com/collectiveidea/delayed_job_active_record/issues/34

对我来说，降级到 0.3.3 有效。