With knowledge of Big Data landscape, it is easy to handle a vast amount of data efficiently on a daily basis. Properly leveraged data gives a competitive advantage to all types of businesses. As more and more businesses are relying on data insights and trends to make business decisions, the demand for trained Big Data professionals is on the rise. If you want to switch your domain or enhance your career path, you can enrol in our online Big Data training programs.
Sample of Experienced Interview Questions
A few of the frequently asked Big Data interview questions for experienced professionals are:
What will be the best option when NameNode is down?
The process of NameNode recovery involves the following steps to make Hadoop cluster up and running:
- Use the file system metadata replica to start a new NameNode.
- Then, configure the DataNodes and customers so that they can acknowledge this new NameNode which has been started.
- Now the new NameNode will start serving the customer after it has loaded the last checkpoint FsImage completely and received block reports from the DataNodes.
On large Hadoop clusters, this NameNode recovery procedure may take a lot of time and it becomes even a greater challenge in case of routine maintenance.
What Is Speculative Execution In Hadoop?
If a node is executing a task slowly, the master node redundantly executes another instance of that same task on another node. Then, the task that finishes first will be accepted and the other one will be killed. This process is known as speculative execution in Hadoop.
What Are The Big Data Courses Offered At Manipal ProLearn?
Learn how to extract valuable information from data and increase ROI of any business by taking up Big Data Certification Course at Manipal ProLearn. A few of the Big Data courses that we offer are:
Why Learn Big Data At Manipal ProLearn?
Big Data courses at Manipal ProLearn can help you master Big Data and Hadoop Ecosystem tools like HDFS, YARN, Impala, Pig, Map Reduce, Frameworks, Hive, HBase, Spark, Flume, Sqoop, Hadoop and many more concepts of Big Data processing life cycle. The pedagogy includes assessments, video tutorials, webinars, interactive sessions by industry experts, practice exercises and a lot more. Our hands-on also prepares you for any type of Big Data interview questions for experienced professionals.
To know more about our admission procedure, curriculum and certification, email us at firstname.lastname@example.org.