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The "DiskSetup" page has been changed by SteveLoughran. The comment on this change is: comment on ext4. http://wiki.apache.org/hadoop/DiskSetup?action=diff&rev1=9&rev2=10 -------------------------------------------------- The long and short of it is that we use XFS to speed up our new machine deployment, and that's it. + === Ext4 === + + The Ext4 Linux filesystem has delayed allocation of data which makes it handle unplanned server shutdowns/power outages less well than classic ext3. Consider turning off the delalloc option in /etc/fstab unless you trust your UPS. +
