Hello, There could be something wrong with the Jetty webserver that starts along with a daemon (Used by the Reducer to fetch map outputs, and seemingly also by fsck from NN's server). Perhaps the logs (of NN, TT) can tell you more on what may have happened when it was initializing the Jetty HTTP service. Look at the initializing part (early up in the logs, during start-up).
Quite possibly, it may be down/uninitialized due to some reason. Are you able to view the Web UIs of each service (services that publish one)? -- Harsh J www.harshj.com
