Here's my log output from a streaming job. What is this?
09:54:27.504 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067504 09:54:27.505 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067505 09:54:27.506 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067506 09:54:27.508 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067507 09:54:27.508 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067508 09:54:27.509 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067509 09:54:27.510 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067510 09:54:27.511 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067511 09:54:27.512 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067512 09:54:27.513 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067513 09:54:27.514 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067514 09:54:27.515 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067515 09:54:27.516 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067516 09:54:27.517 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067517 09:54:27.518 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067518 09:54:27.519 [RecurringTimer - JobGenerator] DEBUG o.a.s.streaming.util.RecurringTimer - Callback for JobGenerator called at time 1427378067519 09:54:27.520 [Recurri ...
