- Hadoop 2.7 Download
- Hadoop Download For Windows 10
- Mac Hadoop Install
- Install Hadoop On Linux
- What Is Hadoop
Download the checksum hadoop-X.Y.Z-src.tar.gz.sha512 or hadoop-X.Y.Z-src.tar.gz.mds from Apache. Shasum -a 512 hadoop-X.Y.Z-src.tar.gz; All previous releases of Hadoop are available from the Apache release archive site. Many third parties distribute products that include Apache Hadoop and related tools. Installing Hadoop on OSX I decided that I wanted to setup a Hadoop cluster on the Mac’s I run, this was mainly decided because of Xgrid not begin available anymore on the new version os OsX. https://treecap181.weebly.com/blog/legacy-java-runtime-6-mac-download. I have setup SGE clusters before, Xgrid obviously, and Microsoft Cluster Server so I wanted to get it under my belt.
After comparing different guides on the internet, I ended up my own version base on the Hadoop official guide with manual download. If you prefer Homebrew, this one would be your best choice. Actually there is no difference in the configuration of these two methods except the file directories. Here I extend the official guide by more details in case you need it.
Also, this guide is part of my Hadoop tutorial 1. It aims to setting up the pseudo-distributed mode in single node cluster. And I will explain the HDFS configurations and command lines in Hadoop tutorial 2.
1. Required software
1) Java
Run the following command in a terminal:
If Java is already installed, you can see a similar result like:
If not, the terminal will prompt you for installation or you can download Java JDK here.
![Download Download](/uploads/1/2/6/7/126723297/443823289.png)
2) SSH
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First enable Remote Login in System Preference -> Sharing.
Now check that you can ssh to the localhost without a passphrase:
If you cannot ssh to localhost without a passphrase, execute the following commands: Download company of heroes 2 mac.
2. Get a Hadoop distribution
You can download it from Apache Download Mirror.
3. Prepare to start the Hadoop cluster
1) Unpack the downloaded Hadoop distribution.
2) Run the following command to figure out where is your Java home directory:
You can see a result like:
3) In the distribution, edit the file etc/hadoop/hadoop-env.sh to define some parameters as follows:
4) Try the following command:
This will display the usage documentation for the hadoop script.
Now you are ready to start your Hadoop cluster in one of the three supported modes:
- Standalone mode
- Pseudo-distributed mode
- fully-distributed mode
We will go through pseudo-distributed mode and run a MapReduce job on YARN here. In this mode, Hadoop runs on a single node and each Hadoop daemon runs in a separate Java process.
4. Configuration
Edit following config files in your Hadoop directory
1) etc/hadoop/core-site.xml:
2) etc/hadoop/hdfs-site.xml:
3) etc/hadoop/mapred-site.xml:
4) etc/hadoop/yarn-site.xml:
5. Execution
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1) Format and start HDFS and YARN
Format the filesystem:
Start NameNode daemon and DataNode daemon:
Now you can browse the web interface for the NameNode at - http://localhost:50070/
Make the HDFS directories required to execute MapReduce jobs:
Download site html and css mac. Start ResourceManager daemon and NodeManager daemon:
Browse the web interface for the ResourceManager at - http://localhost:8088/
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2) Test examples code that came with the hadoop version
Copy the input files into the distributed filesystem:
Run some of the examples provided:
This example counts the words starting with 'dfs' in the input.
Examine the output files:
Copy the output files from the distributed filesystem to the local filesystem and examine them:
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or View the output files on the distributed filesystem:
You can see the result like:
3) Stop YARN and HDFS
When you're done, stop the daemons with: