In the tutorial “Setting up Eclipse IDE step by step tutorial” we looked at installing Eclipse IDE, importing an existing Java project folder into eclipse, and creating a Java project within Eclipse. Industrial strength Java applications will be using Eclipse with Maven.
Configure Eclipse to work with Maven
We have already have a modified “settings.xml”
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A DataFrame is an immutable distributed collection of data like an RDD, but unlike an RDD, data is organized into named columns of a table in a relational database. This makes processing easier by imposing a structure onto a distributed collection of data. From Spark 2.0 onwards, … Read more...
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50+ Java Web Services Interview Q&As with diagrams
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Related Link 1. Spring MVC Web Application with JPA, Hibernate & MySQL step by step. … Read more ›...
This is an extension posts outlining setting up & getting started with Java & Maven.
Q1. What is the difference between JDK & JRE?
A1. JDK: You can download a copy of the Java Development Kit (JDK) for your operating system like Windows 64 bit,
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This extends Apache Kafka Streaming with JSON & Java Tutorial and you can either use Kafka on Docker as per Apache Kafka example with Java – getting started tutorial or install Kafka on Mac (i.e Getting started with Apache Kafka on Mac Tutorial) or Windows. … Read more ›...
This extends Apache Spark local mode read from AWS S3 bucket with Docker. Step 1: The “docker-compose.yml” with minio to emulate AWS S3, Spark master and Spark worker to form a cluster.
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version: "2" services: s3: container_name: s3 image: minio/minio:RELEASE.2018-05-04T23-13-12Z environment: MINIO_ACCESS_KEY: user MINIO_SECRET_KEY: password ports: - 9000:9000 volumes: - ./docker/s3/data:/data - ./docker/s3/config:/root/.minio networks: - infra command: server /data spark-master: build: dockerfile: spark.dockerfile context: ./docker/spark command: bin/spark-class org.apache.spark.deploy.master.Master -h spark-master hostname: spark-master environment: MASTER: spark://spark-master:7077 SPARK_CONF_DIR: /conf SPARK_PUBLIC_DNS: 127.0.0.1 expose: - 7001 - 7002 - 7003 - 7004 - 7005 - 7006 - 7077 - 6066 - 5005 ports: - 5005:5005 - 6066:6066 - 7077:7077 - 8080:8080 volumes: - ./docker/spark/spark-master:/conf - ./data:/tmp/data networks: - infra spark-worker-1: build: dockerfile: spark.dockerfile context: ./docker/spark command: bin/spark-class org.apache.spark.deploy.worker.Worker spark://spark-master:7077 hostname: spark-worker-1 environment: SPARK_CONF_DIR: /conf SPARK_PUBLIC_DNS: 127.0.0.1 SPARK_WORKER_CORES: 2 SPARK_WORKER_MEMORY: 2g SPARK_WORKER_PORT: 8881 SPARK_WORKER_WEBUI_PORT: 8081 links: - spark-master expose: - 7012 - 7013 - 7014 - 7015 - 7016 - 8881 ports: - 8081:8081 volumes: - ./conf/spark-worker-1:/conf - ./data:/tmp/data networks: - infra networks: infra: external: name: docker_test_infra |
Step 2: The “ … Read more ›...
Q1. What do you understand by the term “AVRO schema evolution“?
A1. Schema evolution is the term used for how the store behaves when Avro schema is changed after data has been written to the store using an older version of that schema.
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“Metrics Core” is a very handy framework to gather insights & tune performance of high-throughput and low-latency services. Here is a very simple core Java multi-threaded application that gathers metrics with this library. Step 1: Create a maven project Press enter for all prompts to use the default values. …...
Prerequisite: Extends Databricks getting started – Spark, Shell, SQL. What is a window function? Q. What are the different types of functions in Spark SQL? A. There are 4 types of functions: 1) Built-in functions: from org.apache.spark.sql. … Read more ›...
Step 1: Go to “https://start.spring.io/“, and create a skeletal Spring project. Type “web” in the “search dependencies to add” and fill the “group” and “artifact” fields as shown below. Step 2: Click on the “+” button to add and then on the “Generate Project”, … Read more ›...
These Hadoop tutorials assume that you have installed Cloudera QuickStart, which has the Hadoop eco system like HDFS, Spark, Hive, HBase, YARN, etc. This example extends Learn Hive to write to and read from AVRO & Parquet files by examples to access Hive metastore via Spark SQL. … Read more...
This tutorial outlines the basic steps to get started with Spark on Mac OS. 1. Install Xcode Xcode can be installed via Apple appstore. Xcode is Apple’s Integrated Development Environment (IDE). Xcode is a large suite of software development tools and libraries from Apple. 2.… Read more ›...
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