How will you define checkpoints?Big Data Interview Questions for Experienced/Bigdata Interview Questions and Answers for Freshers & Experienced

How will you define checkpoints?

A checkpoint is a crucial element in maintaining filesystem metadata in HDFS. It creates checkpoints of file system metadata by joining fsimage with the edit log. The new version of fsimage is named Checkpoint.

Posted Date:- 2021-10-21 10:19:02

Describe how gradient augmentation works.

Tell me how to randomly select a sample from a population of product users.

What is the bias-variance tradeoff?

Explain the process of spilling in MapReduce.

What is n-gram?

What is K-mean clustering?

What is the Hierarchical Clustering Algorithm?

What is speculative execution in Hadoop?

How much data is enough to get a valid outcome?

How do you transform unstructured data into structured data?

What are the components of the architecture of Hive?

What do you mean by WAL in HBase?

What is the main difference between Sqoop and distCP?

How will you define checkpoints?

Define Active and Passive Namenodes.

What types of biases can happen through sampling?

Is there any way to change the replication of files on HDFS after they are already written to HDFS?

What is the significance of Sqoop’s eval tool?

What is a block in Hadoop Distributed File System (HDFS)?

What do you know about collaborative filtering?

What happens when multiple clients try to write on the same HDFS file?

Why is HDFS only suitable for large data sets and not the correct tool to use for many small files?

How Is Hadoop CLASSPATH essential to start or stop Hadoop daemons?

What is the goal of A/B Testing?

How are Big Data and Data Science related?

Define DataNode. How does NameNode tackle DataNode failures?

What will happen with a NameNode that doesn’t have any data?

Explain the process that overwrites the replication factors in HDFS.

What is commodity hardware?

Are you open to earning advanced/additional learning and qualifications that would help you to advance your career with us?

What is the standard path for Hadoop Sqoop scripts?

What is the use of jps command in Hadoop?

What is commodity hardware?

What are the different configuration files in Hadoop?

What is Distributed Cache in a MapReduce Framework

What are the different file formats that can be used in Hadoop?

What is a block in HDFS and what is its default size in Hadoop 1 and Hadoop 2? Can we change the block size?

What are the steps to achieve security in Hadoop?

What is the need for Data Locality in Hadoop?

Name the common input formats in Hadoop.

Explain Rack Awareness in Hadoop.

What is the difference between data mining and data profiling?

What is Machine Learning?

Name some outlier detection techniques.

What is data preparation?

How do you convert unstructured data to structured data?

Explain Persistent, Ephemeral and Sequential Znodes.

Explain Outliers.

How can you skip bad records in Hadoop ?

Mention the main configuration parameters that has to be specified by the user to run MapReduce.

Search
R4R Team
R4R provides Bigdata Freshers questions and answers (Bigdata Interview Questions and Answers) .The questions on R4R.in website is done by expert team! Mock Tests and Practice Papers for prepare yourself.. Mock Tests, Practice Papers,Big Data Interview Questions for Experienced,Bigdata Freshers & Experienced Interview Questions and Answers,Bigdata Objetive choice questions and answers,Bigdata Multiple choice questions and answers,Bigdata objective, Bigdata questions , Bigdata answers,Bigdata MCQs questions and answers Java, C ,C++, ASP, ASP.net C# ,Struts ,Questions & Answer, Struts2, Ajax, Hibernate, Swing ,JSP , Servlet, J2EE ,Core Java ,Stping, VC++, HTML, DHTML, JAVASCRIPT, VB ,CSS, interview ,questions, and answers, for,experienced, and fresher R4r provides Python,General knowledge(GK),Computer,PHP,SQL,Java,JSP,Android,CSS,Hibernate,Servlets,Spring etc Interview tips for Freshers and Experienced for Bigdata fresher interview questions ,Bigdata Experienced interview questions,Bigdata fresher interview questions and answers ,Bigdata Experienced interview questions and answers,tricky Bigdata queries for interview pdf,complex Bigdata for practice with answers,Bigdata for practice with answers You can search job and get offer latters by studing r4r.in .learn in easy ways .