2015-03-23 08:58:55,306 INFO [main] org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2015-03-23 08:58:55,660 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2015-03-23 08:58:55,660 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: MapTask metrics system started
2015-03-23 08:58:55,716 INFO [main] org.apache.hadoop.mapred.YarnChild: Executing with tokens:
2015-03-23 08:58:55,716 INFO [main] org.apache.hadoop.mapred.YarnChild: Kind: mapreduce.job, Service: job_1427088391284_0052, Ident: (org.apache.hadoop.mapreduce.security.token.JobTokenIdentifier@33053093)
2015-03-23 08:58:56,181 INFO [main] org.apache.hadoop.mapred.YarnChild: Sleeping for 0ms before retrying again. Got null now.
