BigData / Hadoop basics

How does Tweaking block size affect the system?

While tweaking the block size, a very small block size will increase seek time to read the file that affects performance and making large block size we will lose the parallelism while reading a file.

More Related questions...

What is Apache Hadoop? Hadoop Core modules. Applications of Hadoop. What is Big Data? Apache Hadoop Deployment modes. Advantages of using Apache Hadoop. HDFS. What are the advantages of using HDFS? Describe HDFS Architecture. What is NameNode? What is DataNode? What is Secondary NameNode? What is Backup Node? What are the 5 V's of Big Data? How Data is stored in HDFS? Explain the data flow in Hadoop system. What are the most commonly used Input Formats in Hadoop ? What is Functional Programming? What are the different Distributed Programming available on Hadoop system? What are the available output formats in Hadoop system? Difference between fsImage and editLog file. What is checkpointing in HDFS? The Controls that trigger the checkpoint reconciliation process. What is Data block size in HDFS? What happens to the existing data if the block size is changed in HDFS? What is the single point of failure in a Hadoop cluster? What is Replication factor in HDFS? How does Tweaking block size affect the system? Explain HDFS Data Write Pipeline Workflow. Explain HDFS Read a file workflow. Explain Hadoop Common module.

Show more question and Answers...

Hadoop MapReduce

Comments & Discussions

Hadoop basics 33 Hadoop MapReduce 7 Apache Spark 23 TensorFlow 6 Data pipeline interview questions 12 Splunk Interview Questions 23 Tableau Interview Questions 52 Apache Airflow Interview Questions 50 Apache Parquet Interview Questions 30 Data Lake Interview questions 40

Recently added questions

What is parameter binding in MyBatis? How do you integrate MyBatis with Spring Boot? What is a SqlSessionFactory in MyBatis? How do you write a basic SELECT statement in MyBatis? What is the difference between #{} and ${} in MyBatis? What is MyBatis-Spring? What is MyBatis? What is the difference between MyBatis and Hibernate? What is a Mapper interface in MyBatis? What is a Mapper XML file? What is result mapping? What are the supported statement types in MyBatis? What is a resultMap? How do you configure a data source in MyBatis? What is the mybatis-config.xml file used for? Explain how pagination is typically implemented in MyBatis? What is the purpose of MyBatis? What are the key features of MyBatis? What is a SqlSession in MyBatis? What is dynamic SQL in MyBatis?

	Interviews Questions Java Spring Hibernate DevOps Testing API BigData Web Erlang AI Database Integration Cloud Python Scala Tools Golang SAP	About Javapedia.net Javapedia.net is for Java and J2EE developers, technologist and college students who prepare of interview. Also this site includes many practical examples. This site is developed using J2EE technologies by Steve Antony, a senior Developer/lead at one of the logistics based company. Follow Javapedia updates
	contact: javatutorials2016[at]gmail[dot]com
Kindly consider donating for maintaining this website. Thanks.
	Copyright © 2026, javapedia.net, all rights reserved. Privacy Policy · Terms of Service.