12:43:33.430 AM 	FATAL 	org.apache.hadoop.hdfs.server.datanode.DataNode 	

Exception in secureMain
java.io.IOException: Login failure for hdfs/ipshyd84.in.ibm.com@IPS.COM from keytab hdfs.keytab
	at org.apache.hadoop.security.UserGroupInformation.loginUserFromKeytab(UserGroupInformation.java:825)
	at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:279)
	at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:243)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1726)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1751)
	at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1904)
	at org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.start(SecureDataNodeStarter.java:135)
	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.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:188)
Caused by: javax.security.auth.login.LoginException: Checksum failed
	at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:763)
	at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:584)
	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 javax.security.auth.login.LoginContext.invoke(LoginContext.java:784)
	at javax.security.auth.login.LoginContext.access$000(LoginContext.java:203)
	at javax.security.auth.login.LoginContext$5.run(LoginContext.java:721)
	at javax.security.auth.login.LoginContext$5.run(LoginContext.java:719)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.login.LoginContext.invokeCreatorPriv(LoginContext.java:718)
	at javax.security.auth.login.LoginContext.login(LoginContext.java:590)
	at org.apache.hadoop.security.UserGroupInformation.loginUserFromKeytab(UserGroupInformation.java:816)
	... 11 more
Caused by: KrbException: Checksum failed
	at sun.security.krb5.internal.crypto.Aes128CtsHmacSha1EType.decrypt(Aes128CtsHmacSha1EType.java:102)
	at sun.security.krb5.internal.crypto.Aes128CtsHmacSha1EType.decrypt(Aes128CtsHmacSha1EType.java:94)
	at sun.security.krb5.EncryptedData.decrypt(EncryptedData.java:177)
	at sun.security.krb5.KrbAsRep.decrypt(KrbAsRep.java:149)
	at sun.security.krb5.KrbAsRep.decryptUsingKeyTab(KrbAsRep.java:121)
	at sun.security.krb5.KrbAsReqBuilder.resolve(KrbAsReqBuilder.java:288)
	at sun.security.krb5.KrbAsReqBuilder.action(KrbAsReqBuilder.java:364)
	at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:735)
	... 24 more
Caused by: java.security.GeneralSecurityException: Checksum failed
	at sun.security.krb5.internal.crypto.dk.AesDkCrypto.decryptCTS(AesDkCrypto.java:451)
	at sun.security.krb5.internal.crypto.dk.AesDkCrypto.decrypt(AesDkCrypto.java:272)
	at sun.security.krb5.internal.crypto.Aes128.decrypt(Aes128.java:76)
	at sun.security.krb5.internal.crypto.Aes128CtsHmacSha1EType.decrypt(Aes128CtsHmacSha1EType.java:100)
	... 31 more

12:43:33.458 AM 	INFO 	org.apache.hadoop.util.ExitUtil 	

Exiting with status 1

12:43:33.507 AM 	INFO 	org.apache.hadoop.hdfs.server.datanode.DataNode 	

SHUTDOWN_MSG: 
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at ipshyd84.in.ibm.com/9.184.184.94
************************************************************/