In this post I will try to introduce you to the main differences between ReduceByKey and GroupByKey methods and why you should avoid the latter. But why? The answer is…
Sometimes you got business requirments to create new view or dashboard and to do this you need to convert rows to columns. You can transpose them on two ways: using…
When you create tables, you can set a lot of data type attribues like CHARACTER SET, FORMAT, UPPERCASE or (NOT) CASESPECIFIC. CASESPECIFIC attribute specifies case for character data comparisons and…
A constraint is a rule that you define and its task is to protect the table from clutter that may arise as a result of adding incorrect or incomplete data.…
In this post I will show you how you can easily run Microsoft SQL Server Database using docker and docker-compose. Microsoft provides official images in docker hub, so you can…
Cause This is typical error when you first time use dependencies which are not coming from the most popular maven repository. In this case I wanted to use package which…
Cause The nature of .gitignore is that only newly added files are ignored. In the situation that a directory has been added to your repository, e.g. the mentioned .idea, then…
Maven is trying to connect to artifact repository using https, but you don't have valid ssl certificates. Solution Let's use maven option like below to allow maven use insecure connection.…
Cause Probably you have installed the cache js and css optimizer for your Wordpress website. I have encountered this issue when I have installed Autoptimize plugin. Solution The easiest way…
In this post I will try to help you fix error like "The input device is not a TTY". Problem and solution This error will occur if you are trying…
