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While you can install a virtual machine as well in your system, it requires allocation of a large amount of RAM for it to function smoothly else it would hang constantly. Prerequisite : To install Hadoop, you should have Java version 1. Download the file according to your operating system. Create a new user variable. Now we need to edit some files located in the hadoop directory of the etc folder where we installed hadoop.
The files that need to be edited have been highlighted. Edit the file core-site. Copy this xml property in the configuration in the file.
Note: The path of namenode and datanode across value would be the path of the datanode and namenode folders you just created. Edit hadoop-env. To include those files, replace the bin folder in hadoop directory with the bin folder provided in this github link. Download it as zip file. Extract it and copy the bin folder in it.
Formatting the NameNode is done once when hadoop is installed and not for running hadoop filesystem, else it will delete all the data inside HDFS. Run this command-. Note: Make sure all the 4 Apache Hadoop Distribution windows are up n running. If they are not running, you will see an error or a shutdown message.
In that case, you need to debug the error. Once you complete the steps, you will have a shiny p seudo-distributed single node Hadoop to work with. Refer to the following articles if you prefer to install other versions of Hadoop or if you want to configure a multi-node cluster or using WSL.
We will use Git Bash or 7 Zip to unzip Hadoop binary package. Apache Download Mirrors - Hadoop 3. And then choose one of the mirror link. The page lists the mirrors closest to you based on your location. For me, I am choosing the following mirror link:. You can also directly download the package through your web browser and save it to the destination directory. Now we need to unpack the downloaded package using GUI tool like 7 Zip or command line. For me, I will use git bash to unpack it.
The command will take quite a few minutes as there are numerous files included and the latest version introduced many new features. After the unzip command is completed, a new folder hadoop Hadoop on Linux includes optional Native IO support.
However Native IO is mandatory on Windows and without it you will not be able to get your installation working. Thus we need to build and install it. Download all the files in the following location and save them to the bin folder under Hadoop folder.
Remember to change it to your own path accordingly. After this, the bin folder looks like the following:. Once you complete the installation, please run the following command in PowerShell or Git Bash to verify:. If you got error about 'cannot find java command or executable'. Don't worry we will resolve this in the following step. It contains bug fixes, improvements and enhancements since 2. Users are encouraged to read the overview of major changes since 2. For details of bug fixes, improvements, and other enhancements since the previous 2.
For more information check the ozone site. This is the first release of Apache Hadoop 3. Users are encouraged to read the overview of major changes. For details of please check release notes and changelog.
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