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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Trivial Update of "IdeasOnLdapConfiguration" by SomeOtherAccount
Date Wed, 12 May 2010 19:06:10 GMT
Dear Wiki user,

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The "IdeasOnLdapConfiguration" page has been changed by SomeOtherAccount.


  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

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