Hello, Im trying to submit a job (batch worcount) to a Yarn cluster. I’m trying to use delegation tokens and I’m getting the following error:
org.apache.flink.client.deployment.ClusterDeploymentException: Couldn't deploy Yarn session cluster at org.apache.flink.yarn.AbstractYarnClusterDescriptor.deploySessionCluster(AbstractYarnClusterDescriptor.java:423) at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:262) at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:216) at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1053) at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1129) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920) at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1129) Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): Delegation Token can be issued only with kerberos or web authentication at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getDelegationToken(FSNamesystem.java:7560) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getDelegationToken(NameNodeRpcServer.java:548) at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getDelegationToken(AuthorizationProviderProxyClientProtocol.java:663) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getDelegationToken(ClientNamenodeProtocolServerSideTranslatorPB.java:981) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2221) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2217) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2215) at org.apache.hadoop.ipc.Client.call(Client.java:1472) at org.apache.hadoop.ipc.Client.call(Client.java:1409) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:230) at com.sun.proxy.$Proxy18.getDelegationToken(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getDelegationToken(ClientNamenodeProtocolTranslatorPB.java:928) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:256) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:104) at com.sun.proxy.$Proxy19.getDelegationToken(Unknown Source) at org.apache.hadoop.hdfs.DFSClient.getDelegationToken(DFSClient.java:1082) at org.apache.hadoop.hdfs.DistributedFileSystem.getDelegationToken(DistributedFileSystem.java:1499) at org.apache.hadoop.fs.FileSystem.collectDelegationTokens(FileSystem.java:546) at org.apache.hadoop.fs.FileSystem.collectDelegationTokens(FileSystem.java:557) at org.apache.hadoop.fs.FileSystem.addDelegationTokens(FileSystem.java:524) at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:140) at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:100) at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodes(TokenCache.java:80) at org.apache.flink.yarn.Utils.setTokensFor(Utils.java:235) at org.apache.flink.yarn.AbstractYarnClusterDescriptor.startAppMaster(AbstractYarnClusterDescriptor.java:972) at org.apache.flink.yarn.AbstractYarnClusterDescriptor.deployInternal(AbstractYarnClusterDescriptor.java:545) at org.apache.flink.yarn.AbstractYarnClusterDescriptor.deploySessionCluster(AbstractYarnClusterDescriptor.java:416) The kerberos configuration in this case is the default one. Then I tried with this option set to false ‘security.kerberos.login.use-ticket-cache‘ but I get the same error. I was able to solve the problem by issuing a ticket (with kinit) but I’d like to know if it’s possible to make flink work with delegation tokens and if so what is the right config. Thank you, Juan