Mini Hadoop For Mac Os X

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Installing Hadoop on Mac requires a bit of computer knowledge or else users entangle in a never-ending puzzle of errors. Luckily, you have arrived at the right place. Here I’ll be briefly explaining you How to install Hadoop on Mac. Firstly, I’ll provide needed information about what Hadoop actually is and what it is capable of doing and then we’ll move onward to the simplified step-wise guide for installing Hadoop.

I'm not quite sure I understand the question. I would use whatever OS you're most comfortable or familiar with for interacting with these technologies. While Hadoop can be installed and run on Windows and Linux, the extreme vast majority o.

Contents

  • 1 What is Hadoop?
  • 2 How to Install Hadoop on Mac
    • 2.1 Guide to Install Hadoop on Mac OS

What is Hadoop?

Hadoop is basically an open-source java-based programming software framework for storing data and running applications on clusters of commodity hardware. It provides huge storage for any kind of data, enormous processing power and the ability to handle virtually limitless concurrent tasks or jobs. This makes Hadoop a must have for people meeting any of those requirements. Hadoop is a part of the Apache project sponsored by the Apache Software Foundation. It was invented by computer scientists Doug Cutting and Mike Cafarella in 2006 to support distribution for the Nutch search engine.

Quick Fun Fact: Name “Hadoop” was taken from the name of a yellow toy elephant owned by the son of one of its inventors, Mr. Cutting.

Why Use Hadoop ?

There are plenty of reasons as why Hadoop is a must have. Nonetheless, the major ones being:

  • Hadoop’s distributed computing model processes big data very fast.
  • Data and application processing are protected against hardware failure so you don’t have to worry about them.
  • Hadoop has the ability to store and process massive amounts of any kind of data in a quick manner.
  • It has great flexibility as you don’t have to preprocess data before storing it, unlike traditional databases.
  • You can easily grow your system to handle more data simply by adding nodes.
  • Hadoop is completely free to use and uses commodity hardware to store large amounts of data.

Components of Hadoop

  • H uses Hadoop Common as a kernel to provide the framework’s essential libraries.
  • Hadoop Distributed File System (HDFS) is capable of storing data across thousands of commodity servers to achieve high bandwidth between nodes.
  • The Hadoop MapReduce provides the programming model used to tackle large distributed data processing, i.e. mapping data and then reducing it to a result.
  • Hadoop Yet Another Resource Negotiator (YARN) provides resource management and scheduling for user applications.

These were the major components of Hadoop. Along with these, there are several other projects that can improvise and extend Hadoop’s basic capabilities like Apache Flume, Apache HBase, Cloudera Impala, Apache Oozie, Apache Phoenix, Apache Pig, Apache Sqoop, Apache Spark, Apache Storm and Apache ZooKeeper.

How to Install Hadoop on Mac

Now let’s move further to the procedure of installation of Hadoop on Mac OS X. Installing Hadoop on Mac is not as simple as typing a single line command in Terminal to perform an action. It requires a mix of knowledge, concentration and patience. However, you don’t need to worry about not knowing everything. Just follow the steps that I tell you and you will succeed without a delay.

Guide to Install Hadoop on Mac OS

Run this command before everything in order to check if Java is already installed on your system: $ java –version . If Java is installed, move forward with the guide but if it isn’t, download it from here. Follow these steps accurately in order to install Hadoop on your Mac operating system:

Part-1

Step-1: Firstly, you have to install HomeBrew. You can download and install it from here. Alternatively, you can also install Hadoop by simply pasting the following command in Terminal:

$ ruby -e “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)”

Step-2: Secondly, you have to install Hadoop. You can do so by pasting the following script in the Terminal:

$ brew install hadoop

Part-2

Step-3: Now you have to configure Hadoop ( Hadoop is installed in the following directory
/usr/local/Cellar/hadoop). Do the following to configure Hadoop:

  1. Locate hadoop-env.sh at /usr/local/Cellar/hadoop/2.6.0/libexec/etc/hadoop/hadoop-env.sh ( 2.6.0 is the version and it could be different in your case). Now

    and

  2. Then locate Core-site.xml at /usr/local/Cellar/hadoop/2.6.0/libexec/etc/hadoop/core-site.xml and edit it in the same manner:

    <property>

    <name>hadoop.tmp.dir</name>

    <value>/usr/local/Cellar/hadoop/hdfs/tmp</value>

    <description>A base for other temporary directories.</description>

    </property>

    <property>

    <name>fs.default.name</name>

    <value>hdfs://localhost:9000</value>

    </property>

  3. Locate mapred-site.xml at /usr/local/Cellar/hadoop/2.6.0/libexec/etc/hadoop/mapred-site.xml and edit in the same way:

    <configuration>

    <property>

    <name>mapred.job.tracker</name>

    <value>localhost:9010</value>

    </property>

    </configuration>

  4. Then locate hdfs-site.xml at /usr/local/Cellar/hadoop/2.6.0/libexec/etc/hadoop/hdfs-site.xml edit it too:

    <configuration>

    <property>

    <name>dfs.replication</name>

    <value></value>

    </property>

    </configuration>

  5. Edit ~/.profile using the editor you like such a vim, etc, and add the following two commands ( ~/.profile may not exist by default):$ source ~/.profile
  6. Now you have to execute the following in Terminal to update:$ source ~/.profile

Step-4: Before using Hadoop, you must formate HDFS. You can do so by using this:

Mini Hadoop For Mac Os X Download

$ hdfs namenode -format

Step-5: Check for the existance of ~/.ssh/id_rsa and the~/.ssh/id_rsa.pub files to verify the existence of ssh localhost keys. If these exist move forward, if they don’t, execute this in Terminal:

$ ssh-keygen -t rsa

Step-6: Enable Remote Login by navigating the following path :“System Preferences” -> “Sharing”. Check “Remote Login” . You can do so by using this:

$ ssh-keygen -t rsa

Step-7: Now you have to Authorize SSH Keys to make the system aware of the keys that will be used so that it accepts login. You can do this by using this:

$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

Part-3

Step-8: Finally, you can try to login by following this:

$ ssh localhost

Last login: Fri Mar 6 20:30:53 2015

$ exit

and start Hadoop using this:

$ hstart

Mini

and then, stop Hadoop using:

$ hstop

In this way, you have successfully installed working Hadoop on your Mac. Now you can use it anytime you desire and anywhere you need.

Summary

This was the simplest guide to learn how to install Hadoop on Mac. You now know the basic info, installation, and working of Hadoop. You can also install Hadoop by going through this file.

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In this way, you have also learned that you can even do the complex things by paying close attention. Hadoop has a humongous base of possibilities when it comes to data processing and storage, you are now capable of exploring them based on your expertise. Sometimes you may also encounter certain errors while using Hadoop, I will cover them too in the coming topics.Feel free to contact us for any of the issues. If you have faced any issue regarding this topic, feel free to comment down in the comments section below.

Related Posts:

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.

Mini Hadoop For Mac Os X 2

2) SSH

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:

2. Get a Hadoop distribution

You can download it from Apache Download Mirror.

3. Prepare to start the Hadoop cluster

Mac Os X 10.7 Download Free

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:

Mac Os X Versions

4) etc/hadoop/yarn-site.xml:

5. Execution

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:

Start ResourceManager daemon and NodeManager daemon:

Browse the web interface for the ResourceManager at - http://localhost:8088/

Mac hadoop install

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:

or View the output files on the distributed filesystem:

Hadoop Mac Os X

You can see the result like:

Mini Hadoop For Mac Os X 10 11 Download Free

3) Stop YARN and HDFS

When you're done, stop the daemons with:

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