Also dfs put copies multiple replicas unlike scp. Lohit
On Sep 17, 2008, at 6:03 AM, "叶双明" <[EMAIL PROTECTED]> wrote: Actually, No. As you said, I understand that "dfs -put" breaks the data into blocksand then copies to datanodes, but scp do not breaks the data into blocksand , and just copy the data to the namenode! 2008/9/17, Prasad Pingali <[EMAIL PROTECTED]>: Hello, I observe that scp of data to the namenode is faster than actually putting into dfs (all nodes coming from same switch and have same ethernet cards, homogenous nodes)? I understand that "dfs -put" breaks the data into blocks and then copies to datanodes, but shouldn't that be atleast as fast as copying data to namenode from a single machine, if not faster? thanks and regards, Prasad Pingali, IIIT Hyderabad. -- Sorry for my english!! 明 Please help me to correct my english expression and error in syntax
