Yarn 2.4.0 brings support for high availability configurations by specifying a cluster of resource managers and a state store via zookeeper.
"When there are multiple RMs, the configuration (yarn-site.xml) used by clients and nodes is expected to list all the RMs. Clients, ApplicationMasters (AMs) and NodeManagers (NMs) try connecting to the RMs in a round-robin fashion until they hit the Active RM. If the Active goes down, they resume the round-robin polling until they hit the "new" Active.” Does Samza have any plans to support Yarn HA configurations?
