This assumes that you have read the spring batch beginner tutorial & industrial strength part 1. This is the final part. Step 1: The annotated Java classes are referenced directly due to following line in the batch-context.xml
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<!-- Component-Scan automatically detects annotations in the Java classes. --> <context:component-scan base-package="com.myapp.batch" /> |
Step 2: You define the batch job as shown below. … Read...
Q1. What is the key benefit of using Spring boot?
A1. The key benefit is that you can “build a production ready application from scratch in a matter of minutes”.
Over the years since its inception, Spring has grown to be very complex in terms of the amount of configuration an application requires.
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Step by step MySQL video tutorial to get started with MySQL database. Any decent self-taught projects require a database to store & retrieve data.
Related Links
1. Getting started with MySQL database beginner tutorial.
SQL Interview Q&As
1. 14 FAQ SQL Interview Questions &
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Python is popular in Big Data & data science projects. This tutorial outlines the basic steps to get started with Python 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.
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Q1. What is Spring Cloud? A1. Spring Boot is widely used to develop MicroServices. As many organisations deploy these services on the cloud like AWS, etc you need to take care of various aspects to make it cloud native, hence Spring Cloud was created. … Read more ›...
Installing Zookeepr on Windows
Step 1: Download Zookeeper from http://zookeeper.apache.org/. At the time of writing downloading zookeeper-3.4.11.tar.gz.
Step 2: Using 7-zip on windows unpack the gzipped tar file into a folder. E.g. c:\development\zookeeper-3.4.11. you can see “zkServer.cmd” in the bin folder for windows &
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Q1 How do you remove the Control-M characters from a file?
A1 Control-M is a carriage return on keyboard. The ^M is the keyboard equivalent to \r. In a file originated from DOS/Windows the \r\n is used for an end of line carriage return, whereas in Unix it is \n for a new line.
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Apache Flume is used in the Hadoop ecosystem for ingesting data. In this example, let’s ingest data from Websphere MQ. Step 1: Apache flume is config driven. Hierarchy driven flume config flumeWebsphereMQQueue.conf file. You need to define the “source“, “ … Read more ›...
Step 1: Download the latest version of “Apache Hadoop common” from http://apache.claz.org/hadoop using wget, curl or a browser. This tutorial uses “http://apache.claz.org/hadoop/core/hadoop-2.7.1/”.
Step 2: You can set Hadoop environment variables by appending the following commands to ~/.bashrc file.
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export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home export M3_HOME=~/tools/apache-maven-3.3.9 export HADOOP_HOME=~/hadoop-eco/hadoop-2.7.1 export HADOOP_MAPRED_HOME=$HADOOP_HOME export HADOOP_COMMON_HOME=$HADOOP_HOME export HADOOP_HDFS_HOME=$HADOOP_HOME export YARN_HOME=$HADOOP_HOME export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native export PATH=$PATH:$M3_HOME/bin:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin export HADOOP_INSTALL=$HADOOP_HOME |
You can run this in a Unix command prompt as
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$ source ~/.bashrc |
Step 3: You can verify if Hadoop has been setup properly with
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$ hadoop version |
Step 4: The Hadoop file in $HADOOP_HOME/etc/Hadoop/hadoop-env.sh has the JAVA_HOME setting.
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Apache Kafka with Java getting started tutorial demonstrates how quickly you can get started with Kafka using Docker.
Step 1: Make sure Docker engine is installed on your computer. For example on a Mac OS $ brew cask install docker or on Windows.
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Step 1: Signup to Databricks community edition – https://databricks.com/try-databricks. Fill in the details and you can leave your mobile number blank. Select “COMMUNITY EDITION” ==“GET STARTED“.
If you have a Cloud account then you can use it.
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Docker, Jenkins, CI/CD, & DEV/OPS have been the buzz words for the last several years. You will be seeing this in more often in the job requirements as well. 21 Docker interview questions & answers | DevOps & CI/CD Interview Q&As
Pre-requisite: Docker is installed on your machine for example:
Mac OS X
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$ brew cask install docker |
Linux systems
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# install newest version curl -fsSL https://get.docker.com | bash # add current user to docker group so that it can execute docker commands sudo usermod -aG docker $USER # Start docker sudo systemctl start docker |
Windows10
Step 1: Create a folder “
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Pre-requisite: Docker is installed on your machine for Mac OS X (E.g. $ brew cask install docker) or Windows 10. Docker interview Q&As.
Step 1: Create a Java project “docker-test” with “HelloDocker.java” file under “src/main/java”
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