Psych::BadAlias: 未知别名: 1 when 运行 rake jobs:work
Psych::BadAlias: Unknown alias: 1 when running rake jobs:work
当我使用 rake jobs:work 启动作业服务器时，我的应用程序发生了一些奇怪的事情。 rails 网络服务器启动正常。我注意到诸如 this one 之类的线程，但是 1) 它不是完全相同的错误消息，一个似乎更直接并且 2) 答案没有产生任何不同的结果。
这是我的堆栈跟踪 -
rake aborted!
Psych::BadAlias: Unknown alias: 1
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:77:in `visit_Psych_Nodes_Mapping'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:35:in `visit_Psych_Nodes_Mapping'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:35:in `visit_Psych_Nodes_Mapping'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:17:in `load_dj'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/backend/base.rb:85:in `payload_object'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/backend/base.rb:74:in `name'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:245:in `job_say'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:272:in `handle_failed_job'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:213:in `block in run'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:213:in `rescue in run'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:202:in `run'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:280:in `block in reserve_and_run_one_job'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:280:in `reserve_and_run_one_job'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:187:in `block in work_off'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:186:in `times'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:186:in `work_off'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:150:in `block (4 levels) in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:149:in `block (3 levels) in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:148:in `block (2 levels) in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:147:in `loop'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:147:in `block in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/plugins/clear_locks.rb:7:in `block (2 levels) in <class:ClearLocks>'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:79:in `block (2 levels) in add'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:79:in `block in add'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:146:in `start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/tasks.rb:9:in `block (2 levels) in <top (required)>'
我在 ruby 从 2.1.5 升级到 2.3.8 后遇到了同样的问题。那是最新的 ruby 版本，可能是 运行 和 rails 4.1.8。
升级到最新版本 delayed_job 没有帮助。还尝试在我的 Gemfile 中指定 psych gem 的降级版本。这确实效果不佳。
真正的问题是，如果作业解析阶段出现错误，则 delayed_job 不会更新 last_error 列。
所以我检查了所有作业并检查它是否可以解析：
failing_jobs = []
Delayed::Job.find_each do |job|
begin
# this code is from dj source https://github.com/collectiveidea/delayed_job/blob/master/lib/delayed/psych_ext.rb#L15
yaml = job.handler
result = Psych.parse(yaml)
result ? Delayed::PsychExt::ToRuby.create.accept(result) : result
rescue Psych::BadAlias => e
failing_jobs << job
end
end
在我的例子中，大约 3k 中有 6 个作业可以安全删除，所以我很幸运 :)
参考文献：
https://github.com/collectiveidea/delayed_job/pull/867
https://github.com/collectiveidea/delayed_job_mongoid/pull/65
当我使用 rake jobs:work 启动作业服务器时，我的应用程序发生了一些奇怪的事情。 rails 网络服务器启动正常。我注意到诸如 this one 之类的线程，但是 1) 它不是完全相同的错误消息，一个似乎更直接并且 2) 答案没有产生任何不同的结果。
这是我的堆栈跟踪 -
rake aborted!
Psych::BadAlias: Unknown alias: 1
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:77:in `visit_Psych_Nodes_Mapping'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:35:in `visit_Psych_Nodes_Mapping'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:35:in `visit_Psych_Nodes_Mapping'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/psych_ext.rb:17:in `load_dj'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/backend/base.rb:85:in `payload_object'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/backend/base.rb:74:in `name'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:245:in `job_say'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:272:in `handle_failed_job'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:213:in `block in run'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:213:in `rescue in run'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:202:in `run'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:280:in `block in reserve_and_run_one_job'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:280:in `reserve_and_run_one_job'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:187:in `block in work_off'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:186:in `times'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:186:in `work_off'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:150:in `block (4 levels) in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:149:in `block (3 levels) in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:148:in `block (2 levels) in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:147:in `loop'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:147:in `block in start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/plugins/clear_locks.rb:7:in `block (2 levels) in <class:ClearLocks>'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:79:in `block (2 levels) in add'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:61:in `block in initialize'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:79:in `block in add'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:66:in `execute'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/worker.rb:146:in `start'
/Users/ccromar/.rvm/gems/ruby-2.4.0/gems/delayed_job-4.0.6/lib/delayed/tasks.rb:9:in `block (2 levels) in <top (required)>'
我在 ruby 从 2.1.5 升级到 2.3.8 后遇到了同样的问题。那是最新的 ruby 版本，可能是 运行 和 rails 4.1.8。
升级到最新版本 delayed_job 没有帮助。还尝试在我的 Gemfile 中指定 psych gem 的降级版本。这确实效果不佳。
真正的问题是，如果作业解析阶段出现错误，则 delayed_job 不会更新 last_error 列。
所以我检查了所有作业并检查它是否可以解析：
failing_jobs = []
Delayed::Job.find_each do |job|
begin
# this code is from dj source https://github.com/collectiveidea/delayed_job/blob/master/lib/delayed/psych_ext.rb#L15
yaml = job.handler
result = Psych.parse(yaml)
result ? Delayed::PsychExt::ToRuby.create.accept(result) : result
rescue Psych::BadAlias => e
failing_jobs << job
end
end
在我的例子中，大约 3k 中有 6 个作业可以安全删除，所以我很幸运 :)
参考文献：
https://github.com/collectiveidea/delayed_job/pull/867
https://github.com/collectiveidea/delayed_job_mongoid/pull/65