The official Apache Hadoop 3.0 Download was made availableDec 2017. The Hadoop 3.0 is a feature packed release with lots of new feature and enhancements.Since Hadoop 3.0 is not yet available with Cloudera CDH 6.x or Hortonworks HDP 3.xand you have to installed the basic Hadoop 3.0.3 from it official website.
Download the latest Hadoop 3.0.x Installation on Windows bundlefrom its official website.General availability (GA) marks a point of quality and stability for the release series that indicates its ready for production use. You can also download the source code for this release which is around ~25Mb in size. Hadoop 3.0 binaries will be somewhere around ~250Mb in size
Since Hadoop 3.0 is built on Java 1.8, there is no separate distribution for Unix or Windows. All the binaries are byte-code which can run on any OS.
On successful download, validate the size of Hadoop 3.0 bundle.
While extracting the tar file, you may also find unzipping error as shown below. To avoid this, I extracted the tar in a UNIX machine and transferred the untar version to windows machine.
Once extracted, the folder in windows look like this
You can read rest of the installation details in Hadoop 3.0 installation page.