Busy datanodes become bound by the metadata lookup times for the directory and inode entries required to open a block. Anything that optimizes that will help substantially.
We are thinking of playing with brtfs, and using a small SSD for our file system metadata, and the spinning disks for the block storage. On Thu, Oct 8, 2009 at 10:26 AM, Tom Wheeler <[email protected]> wrote: > As an aside, there's a short article comparing the two in the latest > edition of Linux Journal. It was hardly scientific, but the main > points were: > > - XFS is faster than ext3, especially for large files > - XFS is currently unsupported on Red Hat Enterprise, but apparently > will be soon. > > On Thu, Oct 8, 2009 at 12:12 PM, Stas Oskin <[email protected]> wrote: > > Thanks for the info, question is whether XFS performance justifies > switching > > from the more common Ext3? > > -- > Tom Wheeler > http://www.tomwheeler.com/ > -- Pro Hadoop, a book to guide you from beginner to hadoop mastery, http://www.amazon.com/dp/1430219424?tag=jewlerymall www.prohadoopbook.com a community for Hadoop Professionals
