at org.apache.hadoop.ipc.Client.call(Client.java:1396)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
        at com.sun.proxy.$Proxy16.getFileInfo(Unknown Source)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:816)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:278)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:194)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:176)
        at com.sun.proxy.$Proxy17.getFileInfo(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:2158)
        at org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1423)
        at org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1419)
        at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
        at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1419)
        at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1443)
        at org.apache.hadoop.tools.DistCp.setTargetPathExists(DistCp.java:227)
        at org.apache.hadoop.tools.DistCp.run(DistCp.java:118)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.tools.DistCp.main(DistCp.java:462)
Caused by: java.io.IOException: Couldn't setup connection for ambari-qa-primary@EXAMPLE.COM to /172.21.58.111:8020
        at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:712)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
        at org.apache.hadoop.ipc.Client$Connection.handleSaslConnectionFailure(Client.java:683)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:770)
        at org.apache.hadoop.ipc.Client$Connection.access$3200(Client.java:397)
        at org.apache.hadoop.ipc.Client.getConnection(Client.java:1618)
        at org.apache.hadoop.ipc.Client.call(Client.java:1449)
        ... 22 more
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7) - UNKNOWN_SERVER)]
        at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:212)
        at org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:413)
        at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:595)
        at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:397)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:762)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:758)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:757)
        ... 25 more
Caused by: GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7) - UNKNOWN_SERVER)
        at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:710)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:248)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:179)
        at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:193)
        ... 34 more
Caused by: KrbException: Server not found in Kerberos database (7) - UNKNOWN_SERVER
        at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:73)
        at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:192)
        at sun.security.krb5.KrbTgsReq.sendAndGetCreds(KrbTgsReq.java:203)
        at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:309)
        at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:115)
        at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:454)
        at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:641)
        ... 37 more
Caused by: KrbException: Identifier doesn't match expected value (906)
        at sun.security.krb5.internal.KDCRep.init(KDCRep.java:143)
        at sun.security.krb5.internal.TGSRep.init(TGSRep.java:66)
        at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:61)
        at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:55)
        ... 43 more
17/03/20 07:17:23 ERROR tools.DistCp: Invalid arguments:
java.io.IOException: Failed on local exception: java.io.IOException: Couldn't setup connection for ambari-qa-primary@EXAMPLE.COM to /172.21.58.111:8020; Host Details : local host is: "ambaristandby.myhadoop.com/172.21.58.116"; destination host is: "172.21.58.111":8020;
        at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:782)
        at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1556)
        at org.apache.hadoop.ipc.Client.call(Client.java:1496)
        at org.apache.hadoop.ipc.Client.call(Client.java:1396)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
        at com.sun.proxy.$Proxy16.getFileInfo(Unknown Source)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:816)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:278)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:194)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:176)
        at com.sun.proxy.$Proxy17.getFileInfo(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:2158)
        at org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1423)
        at org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1419)
        at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
        at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1419)
        at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1443)
        at org.apache.hadoop.tools.DistCp.setTargetPathExists(DistCp.java:227)
        at org.apache.hadoop.tools.DistCp.run(DistCp.java:118)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.tools.DistCp.main(DistCp.java:462)
Caused by: java.io.IOException: Couldn't setup connection for ambari-qa-primary@EXAMPLE.COM to /172.21.58.111:8020
        at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:712)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
        at org.apache.hadoop.ipc.Client$Connection.handleSaslConnectionFailure(Client.java:683)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:770)
        at org.apache.hadoop.ipc.Client$Connection.access$3200(Client.java:397)
        at org.apache.hadoop.ipc.Client.getConnection(Client.java:1618)
        at org.apache.hadoop.ipc.Client.call(Client.java:1449)
        ... 22 more
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7) - UNKNOWN_SERVER)]
        at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:212)
        at org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:413)
        at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:595)
        at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:397)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:762)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:758)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:757)
        ... 25 more
Caused by: GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7) - UNKNOWN_SERVER)
        at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:710)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:248)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:179)
        at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:193)
        ... 34 more
Caused by: KrbException: Server not found in Kerberos database (7) - UNKNOWN_SERVER
        at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:73)
        at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:192)
        at sun.security.krb5.KrbTgsReq.sendAndGetCreds(KrbTgsReq.java:203)
        at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:309)
        at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:115)
        at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:454)
        at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:641)
        ... 37 more
Caused by: KrbException: Identifier doesn't match expected value (906)
        at sun.security.krb5.internal.KDCRep.init(KDCRep.java:143)
        at sun.security.krb5.internal.TGSRep.init(TGSRep.java:66)
        at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:61)
        at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:55)
        ... 43 more
Invalid arguments: Failed on local exception: java.io.IOException: Couldn't setup connection for ambari-qa-primary@EXAMPLE.COM to /172.21.58.111:8020; Host Details : local host is: "ambaristandby.myhadoop.com/172.21.58.116"; destination host is: "172.21.58.111":8020;