发布时间: 2014-05-18 08:45:00
今天被这个问题搞死了。 ( I am almost beaten by this issue today)
有两种JOB: 一种是父JOB， 专门生成子job. 一种是 "子job" ( I have 2 kinds of job: spawner job which generates normal jobs, normal job)
前者 耗时比较久， 5分钟左右， 后者3秒以内。 ( the spawner lasts minutes, and normal jobs last less than 3 seconds)
今天发现的问题是： 父JOB正常来说应该只运行一次，结果发现它会运行2～3次不等。 ( today I found that spawner job always run more than I time)
弄了3个小时以后才发现问题： 配置 中的 max_run_time 太短了，导致每次delayed_job 都以为正常运行的父JOB失败了呢。结果第二个WORKER就开始工作了。。。 ( after 3 hours I found the root cause: I set max_run_time too short ( 1 minute ))
( 看到了吗？ 每次都差1分钟） sg552@youku:/sg552/workspace/m-cms-static-page-generator/log$ grep 'generating' delayed_job_2014-05-18.log 16:42:25 INFO: == a plan is generating 1512 files/jobs 16:43:26 INFO: == a plan is generating 1512 files/jobs
解决办法： 增加 max_run_time, 让它不短于任何一种job: ( solution is: increase the "max_run_time" option to make it longer than any job)
(修改 max_run_time ) # -*- encoding : utf-8 -*- # config/initializers/delayed_job_config.rb Delayed::Worker.destroy_failed_jobs = false Delayed::Worker.sleep_delay = 10 Delayed::Worker.max_attempts = 5 Delayed::Worker.max_run_time = 30.minutes Delayed::Worker.read_ahead = 10 Delayed::Worker.default_queue_name = 'default'Back