2015-03-23 08:48:15,960 INFO [main] org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2015-03-23 08:48:16,392 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2015-03-23 08:48:16,393 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: ReduceTask metrics system started
2015-03-23 08:48:16,489 INFO [main] org.apache.hadoop.mapred.YarnChild: Executing with tokens:
2015-03-23 08:48:16,489 INFO [main] org.apache.hadoop.mapred.YarnChild: Kind: mapreduce.job, Service: job_1427088391284_0049, Ident: (org.apache.hadoop.mapreduce.security.token.JobTokenIdentifier@33053093)
2015-03-23 08:48:16,976 INFO [main] org.apache.hadoop.mapred.YarnChild: Sleeping for 0ms before retrying again. Got null now.
