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The following page has been changed by SteveLoughran: http://wiki.apache.org/hadoop/NameNode ------------------------------------------------------------------------------ It is essential to look after the NameNode. Here are some recommendations from production use * Use a good server with lots (15GB+) of RAM. - * Use fast RAID5 storage for keeping the index. + * Consider using fast RAID5 storage for keeping the index. + * List more than one name node directory in the configuration, so that multiple copies of the indices will be stored. As long as the directories are on separate disks, a single full disk will not corrupt the index. * Configure the name node to store one set of transaction logs on a separate disk from the index. * Configure the name node to store another set of transaction logs to a network mounted disk. * Monitor the disk space available to the NameNode. If is getting low, add more storage.
