Short answer: Job History Logs(JHL). Long answer: JHL stores all the meta information related to jobs which were executed like Job start/finish, Task start/finish, TaskAttempt start/finish.
Job.Map_Phase = Function ( Job.Map(first).StartTime, Job.Map(last).FinishTime) Job.Reduce_Phase = Function ( Job.Reduce(first).StartTime, Job.Reduce(last).FinishTime) -Bharath ________________________________ From: sangroya <sangroyaa...@gmail.com> To: hadoop-u...@lucene.apache.org Sent: Monday, July 4, 2011 2:12 AM Subject: measure the time taken to complete map and reduce phase Hi, I am trying to monitor the time to complete a map phase and reduce phase in hadoop. Is there any way to measure the time taken to complete map and reduce phase in a cluster. Thanks, Amit -- View this message in context: http://lucene.472066.n3.nabble.com/measure-the-time-taken-to-complete-map-and-reduce-phase-tp3136991p3136991.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
