On 3/3/10 3:38 PM, "jiang licht" <licht_ji...@yahoo.com> wrote:
> Here's my question, I have to type my password (not PASSPHRASE for key) due to
> some reverse name resolution problem when I do either SSH MASTER from SLAVE or
> SSH SLAVE from MASTER. Since my system admin told me all ports are open
> between them, I am wondering will this interactive authentication prevents
> datanode/tasktracker from talking to namenode/jobtracker?
If reverse name resolution isn't working, then you are going to have all
sorts of problems. DNS needs to be properly configured. [I wish I knew
where the whole "you don't need reverses configured for dns" thing came from
amongst admins.]
