The communication protocol interface between the Applicationclientprotocol client and the Resourcemanage is located in Org.apache.hadoop.yarn.api, where the job submission client submits the application through the protocol, querying the application status, etc. The communication protocol interface between the Resourcemanageradministrationprotocol Administrator and RM is located in Org.apache.hadoop.yarn.server.api The communication protocol interface between Applicationmasterprotocol Applicationmaster and ResourceManager is located in Org.apache.hadoop.yarn.api Applicationmaster to register and unregister the communication protocol between Containermanagementprotocol Applicationmaster and NodeManager through the protocol Interface located in Org.apache.hadoop.yarn.api Applicationmaster can request NodeManager stop container Resourcetracker ResourceManager and NodeManager communication protocol interface located in Org.apache.hadoop.yarn.server.api
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