SelfReflex
SelfReflex is the leading provider of free training resources for Hadoop, Apache Spark, MapReduce and big data. Our aim is to help as many learners as possible without charging even one penny. We are a bunch of passionate geeks who love to code & coach. Our decades of experience in IT industry (primarily in big data world) has enabled us to connect the dots between the theory & practice. We know the underground pumping & the nitty gritty of real world systems. You name few exceptions/errors and chances are - we have dealt with them! Subscribe to our youtube channel and start learning!

Batch vs Stream processing | Spark Interview Questions

Apache Spark Tutorial: SQL like Functions on Datasets - select, filter, groupBy - hands on

Apache Spark Tutorial: Hands-on Spark SQL, Datasets, and DataFrames: Dataset vs Dataframe

Apache Spark Tutorial: Introduction To Spark SQL, Datasets, and DataFrames

Apache Spark Tutorial: Mastering Jobs, Stages, Tasks, and Spark's logical execution plan

Apache Spark Tutorial: Deep Dive into Apache Spark Runtime Architecture on YARN - Spark Internals

Apache Spark Tutorial: Broadcast Variables Hands-On Exercise: Real-Life Use Case From Telecom World

Apache Spark Tutorial: Deep Dive into Broadcast Variables in Apache Spark - Unveiling the Internals

Apache Spark Tutorial: map vs flatmap

Apache Spark Tutorial: RDD Filter Operation Explained with Hands-on Exercise for Data Filtering

Apache Spark Tutorial: Exploring Key-Value RDDs with Hands-on Exercise for Big Data Processing

How to decide number of executors | Apache Spark Interview Questions

When does Apache Spark compute RDD Lineage | Apache Spark Interview Questions with answers

Is Spark better than Hadoop? | Apache Spark Interview Questions | With Explanation

Apache Spark Tutorial: Hands-on Exercise with RDDs for Big Data Processing | Learning RDDs

Apache Spark Tutorial: Mastering RDDs (Resilient Distributed Datasets) for Big Data Processing

Apache Spark Tutorial: Introduction and Basics of Big Data Processing

Introduction To Kubernetes

Yarn architecture introduction

SelfReflex Big Data Architecture

Master Map Reduce in 2 hours

Hadoop interview questions Explain map reduce paradigm with example

Hadoop interview questions map reduce vs traditional data processing

Hadoop interview questions what is map reduce

Master YARN in 45 minutes

Hadoop interview questions hadoop 1 0 vs hadoop 2 0

Hadoop interview questions reason for write failures

Hadoop interview questions secondary vs standby namenode

Hadoop interview questions hdfs node failures

hadoop interview questions what is rack awareness