hbasene
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Sorting
For a stored field, given the row key order of field/term - should be straight-forward.
A configurable scan limit can be given, that in turn refers to the number of unique terms across the given field to be sorted.
A reasonable default value can be placed, with expert level hints about the domain size of the field term ( number of unique terms ) given , that affects the memory on the regionservers and the performance of the scan query for sorting.
Example + code available at - http://wiki.github.com/akkumar/hbasene/api-sorting .