anders created YARN-2142:

             Summary: Add one service to check the nodes' TRUST status 
                 Key: YARN-2142
             Project: Hadoop YARN
          Issue Type: New Feature
          Components: nodemanager, resourcemanager, scheduler
    Affects Versions: 2.2.0
         Environment: OS:Ubuntu 13.04; 
JAVA:OpenJDK 7u51-2.4.4-0
            Reporter: anders
            Priority: Minor
             Fix For: 2.2.0

Because of critical computing environment ,we must test every node's TRUST 
status in the cluster (We can get the TRUST status by the API of OAT sever),So 
I add this feature into hadoop's schedule .
By the TRUST check service ,node can get the TRUST status of itself,
then through the heartbeat ,send the TRUST status to resource manager for 
In the scheduling step,if the node's TRUST status is 'false', it will be 
abandoned until it's TRUST status turn to 'true'.

***The logic of this feature is similar to node's healthcheckservice.

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