Hadoop Developer Self Learning Outline

When we already decided to start working in hadoop, The very first question comes in our mind

What are the prerequisites for learning hadoop? What are the prerequisites for learning prerequisites for learning big data .

From where we should start leaning hadoop?

How much Java and unix / linux knowledge is required for learning hadoop

As we already started out free hadoop learning

Hadoop Developer Self Learning Outline

A simple answer to prerequisites for learning hadoop is
To learn Hadoop and build an excellent career in Hadoop, having basic knowledge of Linux and knowing the basic programming principles of Java is a must.

What are the topic we have to prepare for this?

Answer: Core Java

below are the topic you should review before learning hadoop.

• Geting started with java

- Writing java programs

- Compiling java programs

- Running java programs

- Understanding java program

- java IDE - Eclipse

• Language Fundamentals

- String, Integer, Long

- Object

- Arrays

- Loop blocks - for, while

• Classes and Objects

- Inheritance

- Interface

- Overloading methods

- Overriding methods

• Collections

- ArrayList, LinkedList

- HashMap

- Iterable, Iterator

• Exceptions

- Throwing and Catching Exceptions

- Checked Exceptions

- Unchecked Exceptions

• I/O

- Streams, Input Stream, OutputStream 

- File

All the above mentioned topic can easily be found at Java T Point

Along with Java we need to take care of Linux knowledge.

I am going to mention linux command which are required in the phase of learning hadoop

File Commands

1. ls	Directory listing
2. ls -al	Formatted listing with hidden files
3. ls -lt	Sorting the Formatted listing by time modification
4. cd dir	Change directory to dir
5. cd	Change to home directory
6. pwd	Show current working directory
7. mkdir dir	Creating a directory dir
8. cat >file	Places the standard input into the file
9. more file	Output the contents of the file
10. head file	Output the first 10 lines of the file
11. tail file	Output the last 10 lines of the file
12. tail -f file	Output the contents of file as it grows,starting with the last 10 lines
13. touch file	Create or update file
14. rm file	Deleting the file
15. rm -r dir	Deleting the directory
16. rm -f file	Force to remove the file
17. rm -rf dir	Force to remove the directory dir
18. cp file1 file2	Copy the contents of file1 to file2
19. cp -r dir1 dir2	Copy dir1 to dir2;create dir2 if not present
20. mv file1 file2	Rename or move file1 to file2,if file2 is an existing  directory
21. ln -s file	link Create symbolic link link to file

File permission

chmod octal file Change the permission of file to octal,which can

be found separately for user,group,world by

adding,

• 4-read(r)

• 2-write(w)

• 1-execute(x)

other imp linux command required are related to below category

• Network
• Compression
• System Info
• Searching
• Process management

In order to get PDF of this commands ..Kindly mention your mail ID so I can share it with you

above mentioned  topics are the prerequisites for learning hadoop.

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