Featured columns

Spark & PySpark

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Apache Spark installation guides, performance tuning tips, general tutorials, etc.

*Spark logo is a registered trademark of Apache Spark.

Code Snippets & Tips

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Code snippets and tips for various programming languages/frameworks. All code examples are under MIT or Apache 2.0 license unless specified otherwise.

Hadoop, Hive & HBase

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Articles about Apache Hadoop, Hive and HBase installation, performance tuning and general tutorials.

*The yellow elephant logo is a registered trademark of Apache Hadoop.

Tools

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Tools, Frameworks installation guide and usage tutorials.

Teradata

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Tutorials and information about Teradata.

Microsoft Azure

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Data analytics, application development with Microsoft Azure cloud platform.

Python Programming

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Programming with Python.

Google Cloud Platform

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Data analytics with Google Cloud Platform (GCP). For BigQuery SQL mentioned in the articles, they are all using standard SQL dialect unless specified differently.

ASP.NET Core

Column

Articles about ASP.NET Core 1.x, 2.x, 3.x and 5.0.

.NET

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Everything about .NET framework, .NET Core, .NET Standard, .NET 5 and .NET 6.

Data Partition in Spark (PySpark) In-depth Walkthrough

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Install Hadoop 3.2.1 on Windows 10 Step by Step Guide

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Install Hadoop 3.2.1 on Windows 10 Step by Step Guide

windows10 hadoop yarn big-data-on-windows-10

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PySpark: Convert Python Array/List to Spark Data Frame

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python spark pyspark spark-dataframe

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Install Miniconda and Anaconda on WSL 2 or Linux

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Install Miniconda and Anaconda on WSL 2 or Linux

wsl python

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Install Open JDK on WSL

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java wsl

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Spark - Save DataFrame to Hive Table

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python spark pyspark hive spark-database-connect

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Connect to SQL Server in Spark (PySpark)

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sql server python spark pyspark spark-database-connect

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PySpark: Convert JSON String Column to Array of Object (StructType) in Data Frame

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python spark spark-dataframe

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Install Windows Subsystem for Linux on a Non-System Drive

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linux wsl ubuntu big-data-on-wsl

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Save DataFrame as CSV File in Spark

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pyspark spark spark-2-x spark-file-operations

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Install .NET 8 SDK on Ubuntu

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dotnetcore ubuntu linux

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Overwrite Connecting String via Environment Variable for ASP.NET Core on Docker

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asp.net core docker linux

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System.Globalization.CultureNotFoundException: Only the invariant culture is supported in globalization-invariant mode.

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dotnetcore asp.net core docker

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New Feature - Jupyter Notebook

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kontext jupyter-notebook

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New feature - Markdown WYSIWYG Editor

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kontext

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AWS CDK Python - Add Environment Variables for CodeBuild Pipeline

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AWS CDK Python - Add Environment Variables for CodeBuild Pipeline

aws aws-cdk devops

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Error: Muliple files found matching pattern ./*.sql

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devops sql server azure

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Error when connecting to oracle database in pyspark

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pyspark

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Github Action Az Automation PowerShell: Object reference not set to an instance of an object

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Github Action Az Automation PowerShell: Object reference not set to an instance of an object

azure-bicep devops powershell

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Azure Bicep - Allow Azure services and resources to access this resource

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azure-bicep devops azure

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Diagrams

Solution Diagram Example

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solution-diagram azure

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Kontext Architecture 2023 on Azure

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azure solution-diagram kontext

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AWS Elastic Path Based Listener

image Diagram

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aws

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Azure Serverless Architecture for Web/Mobile Applications

image Diagram

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Azure Serverless Architecture for Web/Mobile Applications

azure solution-diagram

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Forward Proxy and Reverse Proxy

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cloud-network

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OAuth 2.0 and OIDC (OpenID Connect)

image Diagram

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oauth

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Code

GitHub Actions: Update Azure Container Apps Environment Variables

code Code

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yaml devops azure docker

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Deploy Azure Automation Runbooks via GitHub Actions

code Code

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yaml azure-bicep devops azure powershell

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Flatten Pandas DataFrame after Aggregate

code Code

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python pandas

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Pandas DataFrame Group by one Column and Aggregate using MAX, MIN, MEAN and MEDIAN

code Code

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python pandas

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