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Spark & PySpark

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

*Spark logo is a registered trademark of Apache Spark.

Code Snippets & Tips

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

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

Tools, Frameworks installation guide and usage tutorials.

Microsoft Azure

Data analytics, application development with Microsoft Azure cloud platform.

Python Programming

Programming with Python.

Google Cloud Platform

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

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

Teradata

Tutorials and information about Teradata.

.NET

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

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How to Change Docker Data Root Path on Windows 10

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comment 0

access_time 2 months ago

docker windows10

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Docker: no matching manifest for linux/amd64 in the manifest list entries

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comment 0

access_time 3 months ago

Docker: no matching manifest for linux/amd64 in the manifest list entries

docker container

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AWS CDK Python - Add Environment Variables for CodeBuild Pipeline

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comment 0

access_time 21 days ago

AWS CDK Python - Add Environment Variables for CodeBuild Pipeline

aws aws-cdk devops

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Build Latest Hadoop on Windows 10 natively via Docker

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comment 0

access_time 2 months ago

Build Latest Hadoop on Windows 10 natively via Docker

hadoop docker windows10 container

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

visibility 59

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comment 0

access_time 2 months ago

azure-bicep devops azure

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Error when connecting to oracle database in pyspark

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comment 3

access_time 24 days ago

pyspark

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

visibility 42

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comment 0

access_time 2 months ago

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

azure-bicep devops powershell

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Hadoop 3.4.0 winutils for Windows 10 (x64)

visibility 93

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comment 0

access_time 2 months ago

hadoop windows10

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New feature - Markdown WYSIWYG Editor

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comment 0

access_time 18 days ago

kontext

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Hadoop build error - Cound not find a SASL library (GSASL (gsasl) or Cyrus SASL (libsasl2)

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comment 0

access_time 2 months ago

hadoop windows10 c&cpp

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New feature - Markdown WYSIWYG Editor

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comment 0

access_time 18 days ago

kontext

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AWS CDK Python - Add Environment Variables for CodeBuild Pipeline

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comment 0

access_time 21 days ago

aws aws-cdk devops

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

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comment 0

access_time 24 days ago

devops sql server azure

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Error when connecting to oracle database in pyspark

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comment 3

access_time 24 days ago

pyspark

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

visibility 42

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comment 0

access_time 2 months ago

azure-bicep devops powershell

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

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comment 0

access_time 2 months ago

azure-bicep devops azure

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Azure Bicep Deploy Error - The 'parameters.properties.storageAccountSubscriptionId' segment in the url is invalid.

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comment 0

access_time 2 months ago

azure-bicep devops azure

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Fix Azure CLI Installer Error on Windows

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comment 0

access_time 2 months ago

azure windows10

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Hadoop 3.4.0 winutils for Windows 10 (x64)

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comment 0

access_time 2 months ago

hadoop windows10

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Git clone - Filename too long error

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comment 0

access_time 2 months ago

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New diagrams

image Azure Serverless Architecture for Web/Mobile Applications

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Azure Serverless Architecture for Web/Mobile Applications

azure solution-diagram

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image Forward Proxy and Reverse Proxy

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comment 0

access_time 4 months ago

cloud-network

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image OAuth 2.0 and OIDC (OpenID Connect)

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comment 0

access_time 4 months ago

oauth

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image Azure Static Website with Custom Domain via Azure Storage account and CDN

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access_time 5 months ago

Azure Static Website with Custom Domain via Azure Storage account and CDN

azure-storage azure cloud-network

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image Snowflake Object Type Hierarchy

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comment 0

access_time 4 months ago

snowflake

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image ACID Support for Data Lake with Delta Lake, Hudi, Iceberg, Hive and Impala

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comment 0

access_time 6 months ago

ACID Support for Data Lake with Delta Lake, Hudi, Iceberg, Hive and Impala

data-lake data-engineering delta-lake apache-hudi hive apache-orc parquet

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Code

code Deploy Azure Automation Runbooks via GitHub Actions

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comment 0

access_time 2 months ago

azure-bicep devops azure powershell

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code Flatten Pandas DataFrame after Aggregate

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access_time 6 months ago

python pandas

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

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comment 0

access_time 6 months ago

python pandas

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code Get First Top N Rows in a Pandas DataFrame

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comment 0

access_time 6 months ago

python pandas

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code Check Column Data Types in a Pandas DataFrame

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comment 0

access_time 6 months ago

python pandas

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code Rename Columns in Pandas DataFrame

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access_time 6 months ago

python pandas

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code Python - Get a List of Files in a Directory

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access_time 6 months ago

python

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code Python Convert Relative to Absolute File Path

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access_time 6 months ago

python

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code Use sort() and orderBy() with PySpark DataFrame

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access_time 6 months ago

pyspark python

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code Time Travel with Delta Table in PySpark

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access_time 6 months ago

delta-lake pyspark

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Welcome to Kontext!

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draw Kontext Diagrams

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Columns

Spark & PySpark

Code Snippets & Tips

Hadoop, Hive & HBase

Tools

Microsoft Azure

Python Programming

Google Cloud Platform

ASP.NET Core

Teradata

.NET

How to Change Docker Data Root Path on Windows 10

Docker: no matching manifest for linux/amd64 in the manifest list entries

AWS CDK Python - Add Environment Variables for CodeBuild Pipeline

Build Latest Hadoop on Windows 10 natively via Docker

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

Error when connecting to oracle database in pyspark

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

Hadoop 3.4.0 winutils for Windows 10 (x64)

New feature - Markdown WYSIWYG Editor

Hadoop build error - Cound not find a SASL library (GSASL (gsasl) or Cyrus SASL (libsasl2)

New feature - Markdown WYSIWYG Editor

AWS CDK Python - Add Environment Variables for CodeBuild Pipeline

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

Error when connecting to oracle database in pyspark

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

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

Azure Bicep Deploy Error - The 'parameters.properties.storageAccountSubscriptionId' segment in the url is invalid.

Fix Azure CLI Installer Error on Windows

Hadoop 3.4.0 winutils for Windows 10 (x64)

Git clone - Filename too long error

New diagrams

image Azure Serverless Architecture for Web/Mobile Applications

image Forward Proxy and Reverse Proxy

image OAuth 2.0 and OIDC (OpenID Connect)

image Azure Static Website with Custom Domain via Azure Storage account and CDN

image Snowflake Object Type Hierarchy

image ACID Support for Data Lake with Delta Lake, Hudi, Iceberg, Hive and Impala

Code

code Deploy Azure Automation Runbooks via GitHub Actions

code Flatten Pandas DataFrame after Aggregate

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

code Get First Top N Rows in a Pandas DataFrame

code Check Column Data Types in a Pandas DataFrame

code Rename Columns in Pandas DataFrame

code Python - Get a List of Files in a Directory

code Python Convert Relative to Absolute File Path

code Use sort() and orderBy() with PySpark DataFrame

code Time Travel with Delta Table in PySpark