Hi A info log gets my notation. --------------------------------------------------------------------------------------------------------------------- 2013-11-19 11:05:16,222 INFO org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl: Initialized nodemanager for null: physical-memory=8192 virtual-memory=17204 virtual-cores=8 --------------------------------------------------------------------------------------------------------------------- The red color null is supposed to be the nodeId according to the src code in NodeStatusUpdaterImpl.java NodeManager is the last service to start, so NodeId is available. However it get null.Is it normal. Is the Nodeid distributed automaticly or setup artificially. And futher more ,I also want to figure out what is purpose of the nodeid.Or any referenced doc can be available?
Regards
