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October 13, 2021
What is the CAP Theorem?
The CAP theorem states that a distributed data store (database) can only guarantee 2 of the 3 following: consistency, availability, and partition tolerance. What is Consistency? Consistency means that all…
January 25, 2021
How to Keep Docker Containers Running
Docker containers, when run in detached mode (the most common -d option), are designed to shut down immediately after the initial entrypoint command (program that should be run when container…
January 25, 2021
Creating a Hadoop Docker Image
Apache Hadoop is a core big data technology. Running Hadoop on Docker is a great way to get up and running quickly. Below are the basic steps to create a…
January 25, 2021
How to Change Hadoop Output Delimiter
Hadoop’s default output delimiter (character separating the output key and value) is a tab ("\t"). This post explains how to change the default Hadoop output delimiter. Output Delimiter Configuration Property…
January 25, 2021
How to Create a Disk Based List in Java
Occasionally when programming in Java you will need a List too large to hold in memory. MapDB is an open source Java library that allows you to create a disk…
January 25, 2021
How to Create a Disk Based Map in Java
Occasionally when programming in Java you will need a Map too large to hold in memory. MapDB is an open source Java library that allows you to create a disk…
January 25, 2021
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