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The "IdeasOnLdapConfiguration" page has been changed by SomeOtherAccount. http://wiki.apache.org/hadoop/IdeasOnLdapConfiguration?action=diff&rev1=4&rev2=5 -------------------------------------------------- We can define multiple definitions for the same grid. This is important when you consider that small-medium sized grids are likely to have a mix of nodes. For example, some nodes may have 8 cores with four disks and some nodes may have 6 cores with eight disks. If they are part of the same cluster, they will need different mapred-site.xml settings in order to maximize the hardware purchase. + + From the client side, this is a huge win. We can do things like: + + {{{ + $ hadoop listgrids + }}} + + In LDAP terms, this would be fetching the (objectclass=hadoopGlobalConfig) and reporting all clusternames. We could also do: + + {{{ + $ hadoop distcp red:/my/dir green:/my/dir + }}} + + With distcp able to get the necessary grid config from LDAP with no (real) local config necessary. +
