Coprocessors: Support aggregate functions
Review Request #585 - Created April 12, 2011 and updated
This patch provides reference implementation for aggregate function support through Coprocessor framework. ColumnInterpreter interface allows client to specify how the value's byte array is interpreted. Some of the thoughts are summarized at http://zhihongyu.blogspot.com/2011/03/genericizing-endpointcoprocessor.html Himanshu Vashishtha started the work. I provided some review comments and some of the code.