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The "DFS_requirements" page has been changed by PaigeLane. The comment on this change is: minor edit. http://wiki.apache.org/hadoop/DFS_requirements?action=diff&rev1=12&rev2=13 -------------------------------------------------- a. Adding concurrent file append and truncate features will require a block generation number to be stored as a part of the block file name. * Design a '''DFS backup scheme'''. <<BR>> ~-The backup is intended to prevent from data loss related to file system software bugs, particularly during the system upgrades.-~ <<BR>> ~-The backup might not need to store the entire data set; some applications require just a fraction of critical data so that the rest can be effectively restored.-~ + Resources: + [[http://netvideoseo.com|Video Optimization]] +
