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From "Sidharta Seethana (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3221) Applications should be able to 're-register'
Date Thu, 19 Feb 2015 01:09:12 GMT
Sidharta Seethana created YARN-3221:
---------------------------------------

             Summary: Applications should be able to 're-register' 
                 Key: YARN-3221
                 URL: https://issues.apache.org/jira/browse/YARN-3221
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: resourcemanager
    Affects Versions: 2.6.0
            Reporter: Sidharta Seethana


Today, it is not possible for YARN applications to 're-register' in failure/restart scenarios.
This is especially problematic for Unmanaged applications - when restarts (normal or otherwise)
or other failures necessitate the re-creation of the AMRMClient (along with a reset of the
internal RPC counter).  The YARN RM disallows an attempt to register again (with the same
saved token) with the following exception shown below.  This should be fixed.

{quote}
rmClient.RegisterApplicationMaster org.apache.hadoop.yarn.exceptions.InvalidApplicationMasterRequestException:Application
Master is already registered : application_1424304845861_0002
	at org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService.registerApplicationMaster(ApplicationMasterService.java:264)
	at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationMasterProtocolPBServiceImpl.registerApplicationMaster(ApplicationMasterProtocolPBServiceImpl.java:90)
	at org.apache.hadoop.yarn.proto.ApplicationMasterProtocol$ApplicationMasterProtocolService$2.callBlockingMethod(ApplicationMasterProtocol.java:95)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:962)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2039)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2035)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2033)
{quote}



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