ruby-on-rails - SystemStackError : stack level too deep - sql. 事件记录？

Question

我遇到了一个真正的大问题。我的应用程序正在执行几千个 SQL 查询，然后突然出现此错误。如果我通过 rake 任务或直接通过 Rails 控制台执行我的代码，这没有什么不同。

谁知道这是什么意思？从未见过与 Rails 记录器相关的此错误。

环境:
ruby-2.1.2
Postgres 9.3
rails 4.1.5

Could not log "sql.active_record" event. SystemStackError: stack level too deep ["/Users  /ghostrifle/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.5/lib/active_support/tagged_logging.rb:46"]
SystemStackError: stack level too deep
from /Users/ghostrifle/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/irb/workspace.rb:86
Maybe IRB bug!

异常在 23 个调用者之后引发。

这是对 SystemStackError 异常的检查

[
  "/Users/ghostrifle/Entwicklung/xxx_main/lib/tasks/tree_spot.rake:42:in `block (2 levels) in <top (required)>'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/task.rb:240:in `call'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/task.rb:240:in `block in execute'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/task.rb:235:in `each'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/task.rb:235:in `execute'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'",
  "/Users/ghostrifle/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/task.rb:172:in `invoke_with_call_chain'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/task.rb:165:in `invoke'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:150:in `invoke_task'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:106:in `each'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:106:in `block in top_level'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:115:in `run_with_threads'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:100:in `top_level'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:78:in `block in run'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:176:in `standard_exception_handling'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/lib/rake/application.rb:75:in `run'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/gems/rake-10.3.2/bin/rake:33:in `<top (required)>'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/bin/rake:23:in `load'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/bin/rake:23:in `<main>'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `eval'",
  "/Users/ghostrifle/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `<main>'"
]

Answer 1

能否请您显示导致此问题的代码。根据我的理解，您正在保留一个堆栈，您正在向其中添加从数据库中获取的数据，但也许您没有将其初始化为 []。因此，每次运行代码时，数据都会堆积起来，最终会导致此问题。