```
17:45:48.486 [pool-2-thread-1] ERROR org.skywalking.apm.collector.core.module.instrument.MetricCollector -
##################################################################################################################
#                                             Collector Service Report                                                                                                                                            #
##################################################################################################################
BaseB:
 P-B:
BaseA:
 P-A:
  public void org.skywalking.apm.collector.core.module.ModuleABusiness1Impl.print():
   Avg=1585 (nano), Success Rate=100%
```

Provide new stage of module initialization. Named `notifyAfterCompleted`. And rename `init` stage to `start`. Now the initialization sequence is prepare -> start -> notifyAfterCompleted

#537

1. Success: send to analytic worker
2. Failure: write into file.

Because of laptop just have 100M network card and sata disk, so 100 million segment process by collector used 255 second, but cpu just used 28%

#373