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The following page has been changed by udanax: http://wiki.apache.org/lucene-hadoop/Hbase/HbaseArchitecture ------------------------------------------------------------------------------ [[Anchor(rdf)]] === It is not Row-Oriented. === - by [wiki:udanax Udanax] [[MailTo(webmaster AT SPAMFREE udanax DOT org)]] + by [wiki:udanax Udanax] [[MailTo(webmaster AT SPAMFREE udanax DOT org)]] 2007/02/06 I think Hbase should be compact (space-efficient), fast and should be able to manage high-demand load. It should be able to handle sparse tables efficiently. So, for wide and sparse data, Hbase must store data by columns like C-Store does.