alopresto

<?xml version="1.0" ?>
<template encoding-version="1.1">
  <description></description>
  <groupId>3b737254-015b-1000-aee2-fe3d19b02179</groupId>
  <name>RouteHL7</name>
  <snippet>
    <connections>
      <id>015b1002-e563-1455-0000-000000000000</id>
      <parentGroupId>3b737254-015b-1000-0000-000000000000</parentGroupId>
      <backPressureDataSizeThreshold>1 GB</backPressureDataSizeThreshold>

airawat

Secondary sort in Mapreduce

With mapreduce framework, the keys are sorted but the values associated with each key 
are not.  In order for the values to be sorted, we need to write code to perform what is 
referred to a secondary sort.  The sample code in this gist demonstrates such a sort.

The input to the program is a bunch of employee attributes.
The output required is department number (deptNo) in ascending order, and the employee last name, 
first name and employee ID in descending order.