Not a valid comparison. CIFS is a remote file access protocol only. HDFS is a file system (that comes bundled with a remote file access protocol).
It may be possible to build a CIFS gateway for HDFS. One interesting point of comparison at the protocol level is the level of parallelism. Compared to HDFS protocol - CIFS exposes less parallelism. DFS/CIFS has the concept of junction points that allows directories from different storage servers to be stitched into one namespace. There are commercial products that make this easy. However - this allows parallelism at directory level only - whereas HDFS protocol allows a single file to be distributed across different servers. (And as was pointed out - CIFS supports many other file system operations - ACLs, oplocks and what not that HDFS doesn't). -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, October 15, 2007 12:24 PM To: [email protected] Subject: HDFS vs. CIFS I would like someone to compare and contrast CIFS and HDFS? Or...if that is not a valid comparison...please explain to me why it's not a valid comparison. Thanks, Trevor . This message and any attachments contain information from Union Pacific which may be confidential and/or privileged. If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of the contents of this message is strictly prohibited by law. If you receive this message in error, please contact the sender immediately and delete the message and any attachments.
