Jul 30

A neo4j Graph Database Github Repository For Successful Build from Source Without Error

George Jen, Jen Tek LLC We have a big data/analytics project that needs to persist data structures constructed in graph, i.e., in Vertices and Edges (Nodes and Relationships) into a database. A relational database is not an option in our use case. We looked into a number of open source…

Neo 4 J

2 min read

Dec 27, 2021

All In One Custom Mariadb MySQL For SQL Database Developer Docker Image

George Jen, Jen Tek LLC For our purpose, we need a MariaDB (MySQL) instance. Therefore, we want a custom docker image that includes the following: CentOS 8 MariaDB Server version: 10.3.28 (MySQL) Python3 with mariadb python3 connector installed Java Development Toolkit 1.8 Development Tools including C/C++ compiler and git etc. Jupyter-notebook server to run…

My SQL

4 min read

Dec 21, 2021

Canon Rebel Digital SLR DSLR T8i 850D Camera Body Replace Shutter Curtain Near Complete Disassembly

George Jen, Jen Tek LLC Significance This video is likely to be the first documentary publicly available on the successful DIY disassembly and reassembly of Canon Rebel T8i (850D) digital SLR camera. Summary Shutter curtain blade of the Canon T8i was stuck and it displayed error 20 as result. This…

Canon

2 min read

Nov 26, 2021

All In One Custom PostgreSQL For Database Developer Docker Image

George Jen, Jen Tek LLC We have built a custom docker image that includes everything a data engineering developer would need: CentOS 8 image Python3 Java Development Toolkit 1.8 Jupyter-notebook server to run Python and Scala from the host ssh-server for the ease of connecting to the container using ssh and scp, as…

Postgresql

10 min read

Nov 19, 2021

All In One Custom Docker Image for Streaming/Real Time Data Preprocessing Developer on Apache Samza with Kafka

George Jen, Jen Tek LLC We have built a custom docker image that includes everything a data engineering developer would need: CentOS 8 image Python3 Java Development Toolkit 1.8 Jupyter-notebook server to run Python and Scala Spylon Kernel from the host ssh-server for the ease of connecting to the container using ssh and…

Apache Spark

8 min read

All In One Custom Docker Image for Streaming/Real Time Data Preprocessing Developer on Apache Samza…

Nov 7, 2021

All in one custom Docker Image for ETL pipeline/data preprocessing developer on Apache Airflow

George Jen, Jen Tek LLC Introduction We have built a custom docker image that includes everything a data engineering developer would need: CentOS 8 image Python3 Java Development Toolkit 1.8 Jupyter-notebook server to run Python from the host ssh-server for the ease of connecting to the container using ssh and scp, as oppose…

Apache Airflow

7 min read

Oct 18, 2021

All in one custom and comprehensive Docker Image for the data engineering developer on Apache Spark

George Jen, Jen Tek LLC Introduction We want to build a custom docker image that includes everything a data engineering developer would need: CentOS 8 image Python3 Java Development Toolkit 1.8 Jupyter-notebook server to run Python from the host ssh-server for the ease of connecting to the container using ssh and scp, as…

Docker

5 min read

Sep 22, 2021

Surprisingly good Moon photo with low cost old manual lens Canon DSLR camera body

Surprisingly good Moon photo with low cost old manual lens Canon DSLR camera body Today is Chinese mid autumn day, also known as moon festival, on that day, the shape of the moon is fullest during the year. I want to take photo shot at the moon, but I only…

Moonshots

2 min read

Surprisingly good Moon photo with low cost old manual lens Canon DSLR camera body

Aug 17, 2021

Northwind demo database ported to Apache Spark SQL

Northwind database is a popular demo database and originally came from Microsoft Access. It is great for students to practice SQL challenges and it has been ported to many RDBMS, open source or not. We have ported it to Apache Spark SQL, a convenience for those who have setup Apache Spark, and need a demo database to test. I have posted a video on youtube and in the video description area, there is a link to the github site where you can clone a repo if interested in. Thank you very much.

Apache Spark

1 min read

Northwind demo database ported to Apache Spark SQL

Northwind database is a popular demo database and originally came from Microsoft Access. It is great for students to practice SQL challenges and it has been ported to many RDBMS, open source or not.

We have ported it to Apache Spark SQL, a convenience for those who have setup Apache Spark, and need a demo database to test.

I have posted a video on youtube and in the video description area, there is a link to the github site where you can clone a repo if interested in. Thank you very much.

Aug 7, 2021

Tutorial connect Tableau desktop to Spark SQL

Tutorial connect Tableau desktop to Spark SQL George Jen, Jen Tek LLC This tutorial is for hands on in my teaching of Apache Spark integration with Tableau desktop, showing how to connect Tableau desktop to log into Spark SQL. If interested in, here is the video, hope it can be helpful, thank you for viewing

Spark

1 min read

Tutorial connect Tableau desktop to Spark SQL

George Jen, Jen Tek LLC

This tutorial is for hands on in my teaching of Apache Spark integration with Tableau desktop, showing how to connect Tableau desktop to log into Spark SQL.

If interested in, here is the video, hope it can be helpful, thank you for viewing