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Apache Spark and Scala Tutorial

Apache Spark and Scala Website

 

Apache Spark and Scala YouTube

Apache Spark Tutorial

Apache Spark and Scala Tutorial

Spark-SQL

 

Tutorial Links

https://spark.apache.org/docs/0.9.1/scala-programming-guide.html

https://www.tutorialspoint.com/apache_spark/index.htm

https://github.com/deanwampler/spark-scala-tutorial

 

Job Titles

Hadoop Developer – Java/Scala/Spark, Scala&Spark Engineer

 

Alternatives

Apache Storm.
Apache Hadoop.
Splunk.
Apache Flink.
amazon Kinesis.
SQL stream.
Elasticsearch.
Apache hive.

 

Certification

HDP Certified Apache Spark Developer.
O’Reilly Developer Certification for Apache Spark.
Cloudera Spark and Hadoop Developer.
MapR Certified Spark Developer.

 

Interview Questions & Answers

https://www.dezyre.com/article/scala-interview-questions-and-answers-for-spark-developers/302

https://www.wisdomjobs.com/e-university/scala-interview-questions.html

https://javarevisited.blogspot.com/2017/03/top-30-scala-and-functional-programming.html

 

Apache spark

Apache Spark is an open-source cluster-computing framework. Originally developed at the University of California, Berkeley’s AMP Lab, the Spark codebase was later donated to the Apache Software Foundation, which has maintained it since.

 

Apache spark Overview

 

Architecture

Apache Spark is an open source, general-purpose distributed computing engine used for processing and analyzing a large amount of data. Just like Hadoop Map Reduce, it also works with the system to distribute data across the cluster and process the data in parallel.

 

Applications

Apache Spark: 3 Real-World Use Cases. The Hadoop processing engine Spark has risen to become one of the hottest big data technologies in a short amount of time. … Spark is an open source alternative to Map Reduce designed to make it easier to build and run fast and sophisticated applications on Hadoop.

 

Benefits

Advantages of Apache Spark Yes, Hadoop are your ultimate store of all your semi structured data within HDFS and yes, you can query all your data using Map Reduce. The numerous advantages of Apache Spark make it a very attractive big data framework. In this blog we will talk through the many advantages of using Spark.

 

 Disadvantages

In-memory capability can become a bottleneck when we want cost-efficient processing of big data as keeping data in memory is quite expensive, the memory consumption is very high, and it is not handled in a user-friendly manner. Apache Spark requires lots of RAM to run in-memory, thus the cost of Spark is quite high.

 

Definition

Apache Spark is an open-source engine developed specifically for handling large-scale data processing and analytics. Spark offers the ability to access data in a variety of sources, including Hadoop Distributed File System (HDFS), Open Stack Swift, Amazon S3 and Cassandra.

 

What is in Apache spark?

Apache Spark is an open source big data processing framework built around speed, ease of use, and sophisticated analytics. It was originally developed in 2009 in UC Berkeley’s AMP Lab, and open sourced in 2010 as an Apache project.

 

Features

  • Apache Spark is a powerful open source processing engine for Hadoop data built around speed, easy to use, and sophisticated analytics.
  • Spark lets you quickly write applications in Java, Scala, or Python.

 

History

Spark was initially started by Matei Zaharia at UC Berkeley’s AMP Lab in 2009, and open sourced in 2010 under a BSD license. In February 2014, Spark became a Top-Level Apache Project. In November 2014, Spark founder M. Zaharias’s company Data bricks set a new world record in large scale sorting using Spark.

 

Limitations

With Spark, we can run logic up to 100 x faster than with Hadoop in memory, or 10 x faster on disk. As we know Spark is the next Gen Big data tool that is being widely used by industries but there are certain limitations of Apache Spark due to which industries have started shifting to Apache Flank– 4G of Big Data.

 

Overview

Apache Spark is a general framework for distributed computing that offers high performance for both batch and interactive processing. It exposes APIs for Java, Python, and Scala and consists of Spark core and several related projects: Allows you to seamlessly mix SQL queries with Spark programs.

 

Purpose

Spark uses Micro-batching for real-time streaming. Apache Spark is open source, general-purpose distributed computing engine used for processing and analyzing a large amount of data. Just like Hadoop Map Reduce, it also works with the system to distribute data across the cluster and process the data in parallel.

 

Requirements

An ambary-server is 16 GB RAM, 8 CPU and 60 GB disk. – 2 ambary-agents are 8 GB RAM, 8 CPU and 40 GB disk. I’ve installed Spark2 on this cluster and I’m trying to submit spark job but it failed.

 

Performance

Apache Spark allows developers to run multiple tasks in parallel across machines in a cluster, or across multiple cores on a desktop. A partition, or split, is a logical chunk of a distributed data set. Apache Spark builds a Directed Acyclic Graph (DAG) with jobs, stages, and tasks for the submitted application.

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