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YARN Rack Awareness in HDP does not work for Compute only Nodes

The rack awareness that Ambari maintains only propagates the /etc/hadoop/conf/topology_mappings.data file for Datanodes. If I have a node with only Nodemanager Ambari does not add it to the topology_mappings.data file. These seems to indicate that a Compute only nodes does not get rack awareness in Ambari.

Second issue is that when adding a Datanode, Ambari asks for a restart, I'm assuming just to propogate the topology_mappings.data file. Adding a datanode ideally shouldn't need a restart.

2 REPLIES 2

Expert Contributor

@Raghu Udiyar We don't have to restart ambarii server after adding a datanode

@chennuri gouri shankar It does for HDP2.2 which we are using.