hi all i am doing my research in security issues of hadoop.i have noticed that security can be attained under three heads like user authentication,data transfer while running hadoop service and HDFS level. Analyzed that kerberos cab be used for user authentication.when the user wants to submit a job he/she can get delegation token followed by block access token to access data from HDFS.So the client is overloaded with initial 2 tickets (kerberos) TGT(Ticket grating Ticket),ST (service ticket)followed by delegation token and block access token..Is that right?? suggestions plz... regards sujitha
----------------------------------------- This email was sent using TCEMail Service. Thiagarajar College of Engineering Madurai-625 015, India
