HDInsight Emulator is the development edition of Azure HDInsight that runs locally on the Windows desktop and servers. It is essentially a single node Hadoop cluster where storage and compute reside on the same machine unlike the Azure cloud HDInsight service, where a cluster consists of multiple nodes and storage is on Azure Blob storage.
HDInsight Emulator is supported by the following 64-bit operating systems: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack1, Windows 8, or Windows Server 2012.
To install HDInsight Emulator, open a browser and enter the URL http://www.microsoft.com/web/gallery/install.aspx?appid=HDINSIGHT.
The installation is a wizard driven by Microsoft ...