timer trigger - azure webjob does not stop (keeps working after stopping has been requested) -

we have following situation.

we decided use webjob in 1 of our web app perform work every 30 seconds.

for purpose use following code called main function:

        static void run(bool locally)     {         jobhostconfiguration config = new jobhostconfiguration();         if (locally)         {             config.tracing.consolelevel = tracelevel.verbose;             config.usedevelopmentsettings();         }config.usetimers();         jobhost host = new jobhost(config);         host.runandblock();     } 

we have method in webjob triggered timer:

      public static async task timerjob([timertrigger("00:00:30")] timerinfo timer)     {....       ienumerable<iinvitationprocessor> processors = _container.resolve<ienumerable<iinvitationprocessor>>();       ....     } 

where _container - autofac container

we noticed 2 strange different things(it looks linked):

1) if stop webjob using th portal webjob dispalyed stopped in fact keeps working - see logs in log on portal , logs in appinsights our webjob code writes to. restarting of webapp not help. only

way stop delete webjob(in fact keeps working) , restart webapp. after webjob stopped(in fact disappears ).

p.s.: our webjob uses timertrigger in turn uses distributed lock garantee 1 instance of wbjob called(every 30 seconds). locally started instance manages acquire lock after above actions(deletion adn restart) hav been performed. - evidence "deleted\stopped" webjob keeps running.

2) after time(perhaps after redeploy) our webjob starts raising following exception

system.io.filenotfoundexception handled @ autofac.core.activators.reflection.constructorparameterbinding.instantiate

while trying resolve dependencies(it looks strange because of time dependecies resolved - while deployed on azure web app or locally)

thanks