我对Hadoop-2.x中tasktracker的位置感到有点困惑.
Hadoop-1.x中的守护进程是namenode, datanode, jobtracker, taskracker and secondarynamenode
Hadoop-2.x中的守护进程是namenode, datanode, resourcemanager, applicationmaster, secondarynamenode.
这意味着 Jobtracker has split up into: resourcemanager and applicationmaster
那么在哪里tasktracker？