Hi Dan,
Can you look at the stdout/stderr logs in the task sandbox for me and share any errors here? Also – What version of Hadoop are you using, and what version of the Hadoop on Mesos framework? Thanks. -- Tom Arnfeld Developer // DueDil On Wednesday, Jan 14, 2015 at 8:22 pm, Dan Dong <dongda...@gmail.com>, wrote: Hi, When I run hadoop jobs on Mesos(0.21.0), the jobs are stuck for ever: 15/01/14 13:59:30 INFO mapred.FileInputFormat: Total input paths to process : 8 15/01/14 13:59:30 INFO mapred.JobClient: Running job: job_201501141358_0001 15/01/14 13:59:31 INFO mapred.JobClient: map 0% reduce 0% >From jobtracker log I see: 2015-01-14 13:59:35,542 INFO org.apache.hadoop.mapred.ResourcePolicy: Launching task Task_Tracker_0 on http://centos-2.local:31911 with mapSlots=1 reduceSlots=0 2015-01-14 14:04:35,552 WARN org.apache.hadoop.mapred.MesosScheduler: Tracker http://centos-2.local:31911 failed to launch within 300 seconds, killing it I started manually namenode and jobtracker on master node and datanode on slave, but I could not see tasktracker started by mesos on slave. Note that if I ran hadoop directly without Mesos( of course the conf files are different and tasktracker will be started manually on slave), everything works fine. Any hints? Cheers, Dan