CustomJobEndNotifier (Apache Hadoop MapReduce Core 3.2.3 API)

```
public interface CustomJobEndNotifier
```
An interface for implementing a custom Job end notifier. The built-in Job end notifier uses a simple HTTP connection to notify the Job end status. By implementing this interface and setting the MRJobConfig.MR_JOB_END_NOTIFICATION_CUSTOM_NOTIFIER_CLASS property in the map-reduce Job configuration you can have your own notification mechanism. For now this still only works with HTTP/HTTPS URLs, but by implementing this class you can choose how you want to make the notification itself. For example you can choose to use a custom HTTP library, or do a delegation token authentication, maybe set a custom SSL context on the connection, etc. This means you still have to set the MRJobConfig.MR_JOB_END_NOTIFICATION_URL property in the Job's conf.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`boolean`	`notifyOnce(URL url, org.apache.hadoop.conf.Configuration jobConf)` The implementation should try to do a Job end notification only once.

Interface CustomJobEndNotifier