2012-05-14 17:59:41,906 FATAL org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer: Error starting JobHistoryServer
org.apache.hadoop.yarn.YarnException: History Server Failed to login
at org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer.init(JobHistoryServer.java:69)
at org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer.main(JobHistoryServer.java:132)
Caused by: java.io.IOException: Running in secure mode, but config doesn't have a keytab
at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:258)
at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:229)
at org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer.doSecureLogin(JobHistoryServer.java:98)
at org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer.init(JobHistoryServer.java:67)
... 1 more
2012-05-14 17:59:41,918 INFO org.apache.hadoop.yarn.service.CompositeService: Error stopping org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer
java.lang.NullPointerException
at org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer.stop(JobHistoryServer.java:115)
at org.apache.hadoop.yarn.service.CompositeService$CompositeServiceShutdownHook.run(CompositeService.java:122)
at org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
2012-05-14 17:59:41,918 INFO org.apache.hadoop.mapreduce.v2.hs.JobHistoryServer: SHUTDOWN_MSG: