Hi List! I'm working on configuring hadoop to use the mesos scheduler, using the procedure outlined in "Apache Mesos Essentials" here:
https://pastebin.com/y1ERJZqq Currently I've a 3 node mesos cluster, with an HDFS namenode communicating successfully with two HDFS data nodes. However, when I try to start up the jobtracker it fails with the following error: 17/07/22 18:44:38 FATAL mapred.MesosScheduler: Failed to initialize the TaskScheduler java.lang.ClassNotFoundException: org.apache.hadoop.mapred.JobQueueTaskScheduler Some more context around the error: 17/07/22 18:44:38 INFO mapred.CompletedJobStatusStore: Completed job store is inactive 17/07/22 18:44:38 FATAL mapred.MesosScheduler: Failed to initialize the TaskScheduler java.lang.ClassNotFoundException: org.apache.hadoop.mapred.JobQueueTaskScheduler at java.net.URLClassLoader$1.run(URLClassLoader.java:359) at java.net.URLClassLoader$1.run(URLClassLoader.java:348) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:347) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:312) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:195) at org.apache.hadoop.mapred.MesosScheduler.start(MesosScheduler.java:160) at org.apache.hadoop.mapred.JobTracker.offerService(JobTracker.java:2186) at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:4548) 17/07/22 18:44:38 INFO mapred.JobTracker: SHUTDOWN_MSG: Is there some way I could debug this further to trace the root cause of this error? Here is a full paste of the debug output when starting up the jobtracker: https://pastebin.com/a61wN4vQ
