A letter to a novice to Hadoop: Hadoop introductory self-study and employment assistance

Evening sorting out the mailbox, found a former user of the Hadoop learning letter and my letter, I think should be helpful to beginners will be posted out for everyone to see!

Hon：

How are you doing:

I was at the beginning of the year like learning Hadoop, but there was a period of time to learn about mobile phone Android development. Delay for some time.

I just got in touch with you recently. Now I still have a lot of questions.

1. I finished, do two examples to achieve a basic degree of entry. Is it easy to find a job?

2. Did I just enter the company to join the Hadoop project directly?

2. What is the pay for work? I've been doing Java Web development for almost two years.

3. I am still in class, study can only say that weekend and evening study. I don't know if it's okay.

4. Learn what the basis of Hadoop Xu, Java to what extent Ah, Linux back to what extent AH.

5. Learn what http://www.aliyun.com/zixun/aggregation/11585.html need "> Hardware devices. A notebook is not enough.

6. Another is to learn with you, the tuition is how much ah. After all, I graduated last year, and now wages are not high.

I hope you see help me answer these questions. I want to learn as soon as possible. It's best to learn to find Hadoop before you're 10.1.

Here is my answer:

1. The first to look for a job to see if you are starting to pay attention to the treatment or direction, now the industry is also using Hadoop, so the demand is quite large, if you want to go to large companies to do the work of Hadoop is certainly not enough training to learn, I give the advice is that you do hadoop more than the average person understand in-depth , and then add a new attitude to some small and medium-sized enterprises that currently want to invest in Hadoop technology.

2. How much do you learn? First you need to know what Hadoop is, can solve what problems, these Baidu Google can search, need to see a lot of information, macro understand him, choose a technology can not you do 2 years and then change, so you have to understand whether this technology has a future, Where the future is, and not now everyone says Hadoop is good, pay a job to learn.

3. Salary you don't have to be too tangled up in this, it can be said that if Hadoop you research enough in-depth, there are 2-3 years of experience in this area of 20W is no problem, but now you do not think too much treatment, some companies are not high but gave you a platform, should fancy growth space, fancy platform, Of course, if you can win more points on this basis, there is no specific standard in this industry. Look at the enterprise, see the level of experience.

4. This is no problem, I began to study Hadoop in 10, it can be said that the study is not early, in fact, you go to work to complete the company, you can learn Hadoop, and then you are almost the macro grasp of Hadoop, you can start to cast resume, Then write the application of Hadoop again, because in the course of the interview you will know what they need and what you are doing better than reading your books.

5.java You must be very skilled, of course, the introduction of Hadoop itself is not difficult, but you want to read the source code, want to understand deeply, you want more threads, parallelization, and so on concepts to understand, itself Hadoop is a framework, you understand him thoroughly is also equal to the Java technology you have a system mastered. As for Linux this thing encountered do not understand on Baidu, will not have any difficulty.

6. Learning Hadoop technology is enough for one machine, but it's best to get three machines if you want to combat it. But you can learn it first.

7. Training said really, I do not have time, you can learn by yourself, if you encounter some problems, email me, I can give you answer questions.

So then you should do this:

1. More to see the official website of Hadoop, to understand what the official web site, the structure of the official website, after encountering problems know to find

2.2nd find ways to understand the principle of hadoop, online resources, you have to figure out what he contains, what is HDFs, what is mapreduce, what he can do. When someone asks you, you can answer in a simple way. Think about the current application of your company which can be solved with Hadoop, why?

3. Buy a book called Hadoop authoritative Guide to see, this forum also has, can download directly.

4. The above points are clear, start to build an environment to run a WordCount

5.wordcount, you can change the code after running.

Do this in this order, and when you're done with one of your own business scenarios, you'll be able to drop your resume.

Hadoop is a storage System + computing Framework! The main solution is to store and compute massive data. Other your own online search, I hope you can fully check some information, serious reading!