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Answered on 14/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data

Pritam Agarwala

Trainer

Java-core concepts is required to write programs in Hadoop. You can learn Big Data technologies having knowledge of basic Linux commands , Sql along with Java.
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Answered on 14/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data

I work for a big company and have 2.9 years of experience (Linux, Sybase, Java) but I'm not interested... read more
I work for a big company and have 2.9 years of experience (Linux, Sybase, Java) but I'm not interested in my current job which has most of the domain expertise. I want to learn something new and pursue my career abroad. I find BigData-Hadoop is emerging. Will it be advisable to learn that now and switch? read less

Pritam Agarwala

Trainer

It will very easy for you to learn Big data technologies as you have hands on in Java ,Linux & RDBMS. Big data Hadoop has lot of opportunities for next 10 years.
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Answered on 14/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data

Is it too late for a Java developer, having 4 years of experience, to learn Big Data Hadoop? What are... read more
Is it too late for a Java developer, having 4 years of experience, to learn Big Data Hadoop? What are the prerequisites to learn Big Data Hadoop? Is it worth learning? read less

Pritam Agarwala

Trainer

Its not late at all. It will be very easy for you to learn big data as you have very good hands on in Java. You can learn basics Linux commands and SQL concepts & syntax which are required to learn Big data technologies. All the best!!
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Answered on 24/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data

What is the best way to learn Hadoop online and what are its prerequisites?

Sravan

Best Real time trainings as per industry standards to easily under

If you want learn big data testing prequest is Oracle SQL knowledge and basic Unix scripting If you are planning to move as a big data developer, you should aware basics of core Java,SQL , Unix
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Answered on 08/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data

Which one is the better career, Salesforce.com admin or Hadoop big data admin?

Aakash Kumar

Trainer

Both are having different Quality In Their Filed, But as a Big data Developer i can say Hadoop big data admin is better one.
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Answered on 08/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data

How does hadoop work?

SanKir Technologies Pvt Ltd

Hadoop is a framework for distributed filesytem and distributed compute as compared to a monolithic traditional system. Hadoop can scale out horizontally and can run on commodity hardware. Sanjay Sankir Technologies http://www.sankir.com
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Answered on 15/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data

How can I be a Hadoop admin and earn a good salary?

Pratik Joshi

You need to starts with basic and understand the concept of big data and the role of hadoop in it. It is not a difficult task if you have someone expert who can make u understand all this. Once u have indepth knowledge of it any company will hire you for sure. Regards, Pratik Joshi read more

 You need to starts with basic and understand the concept of big data and the role of hadoop in it. It is not a difficult task if you have someone expert who can make u understand all this. Once u have indepth knowledge of it any company will hire you for sure.

Regards,

Pratik Joshi

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Answered on 19/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data +1 Tuition/BTech Tuition/Big Data Analytics less

How do I find duplicates in Hadoop file?

Browning B Boniface

Accounting Expert

In reducer please check the number of values grouped for each key. If you have more than one value you know you have a duplicate. If you just want the duplicate values, write out the keys that have multiple values.
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Answered on 18/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data +1 Tuition/BTech Tuition/Big Data Analytics less

If there are trillions of files coming to the system, what techniques will we use to push data in Hadoop.... read more
If there are trillions of files coming to the system, what techniques will we use to push data in Hadoop. Will we use a staging environment? read less

Shreya Sikdar

Beatrice-be innovative and knowledgeable

U know first of all we can directly store the data in memory rather than in disks for which my RAM management will be volatile where I can easily loose data but that will cause a problem with my metadata so immediately I have to create an interval offtime within which I have to create a disk where I... read more

U know first of all we can directly store the data in memory rather than in disks for which my RAM management will be volatile where I can easily loose data but that will cause a problem with my metadata so immediately I have to create an interval offtime within which I have to create a disk where I can store the backup of my metadata which is basically called as FS IMAGE but again it will become big right ,so suppose today FSIMAGE is subdivided in two versions FS1 and FS2 there the backup of your data is done within every 24 hrs but as it's regularly not possible to backup my data daily we have to create a small file where we can easily store the backup of all our activities and that file is called as an editlog then we will surely not loose our metadata and some of the huge stored files will also get pushed up in Hadoop. Well I don't have a much knowledge about all these things whatever I have said just from my basic knowledge,I just wanted to try, so please don't mind or comment anything if I have done a mistake by answering this question. 

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Answered on 19/11/2018 IT Courses/Hadoop IT Courses/Hadoop/Hadoop Testing IT Courses/Big Data +1 Tuition/BTech Tuition/Big Data Analytics less

What are the ways to improve loading time from local file system to HDFS?

Browning B Boniface

Accounting Expert

By using Apache kafka producer and consumer can be created and you can send files from your non local system By using hive external table and then sftp your files to the hdfs path
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