Stopping server components

i see this in my logs and was wondering what is triggering this. after the stopping scheduled jobs don’t get enqueued anymore. can this be prevented?

[66] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘Server Bootstrapper’…
2015-05-14 10:41:11,218 [66] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending shutdown request for server component ‘Server Bootstrapper’…
2015-05-14 10:41:11,218 [Server Bootstrapper] INFO Hangfire.Server.ServerBootstrapper - Stopping server components…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘Worker Manager’…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘Server Heartbeat’…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘Schedule Poller’…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘Server Watchdog’…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘Recurring Job Scheduler’…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘SQL Records Expiration Manager’…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending stop request for server component ‘Worker Manager’…
2015-05-14 10:41:11,281 [Server Bootstrapper] DEBUG Hangfire.Server.AutomaticRetryServerComponentWrapper - Sending shutdown request for server component ‘Worker Manager’…