According to Wikipedia: http://en.wikipedia.org/wiki/Apache_Accumulo Accumulo is a column-oriented database. Wikipedia defines column-oriented this way " A column-oriented database serializes all of the values of a column together, then the values of the next column, and so on."
I understand it is possible to store some column related data together with locality groups but wouldn't the default behavior be key/value store type database instead of column-oriented? Thanks, Sandy
