Out of the box the EhCache is looking for the ehCache.xml configuration file in resources path which is albo packed into jar file. In case when you want to use…
With Java 11, JavaFX libraries were excluded from the JDK library, so to use JavaFX you need to download and manually attach the missing libraries to the project. JavaFX download…
After docker installation you can encounter error: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.40/images/json: dial unix /var/run/docker.sock: connect: permission denied Solution…
When working with Apache Kafka, there may be a situation when we need to delete data from topick, because e.g. during testing junk data was sent, and we have not…
Recently, Microsoft Teams has been gaining more and more popularity among users. All in all, it is not surprising, because currently on the market it is difficult to find a…
Recently, Microsoft Teams has been gaining more and more popularity among users. All in all, it is not surprising, because currently on the market it is difficult to find a…
The answer is - you cannot, but you can use @SuperBuilder annotation instead of @Builder. @SuperBuilder was introduced as experimental feature in lombok v1.18.2.@SuperBuilder's toBuilder feature and limited support for…
Sometimes you got business requirements 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…
Many times you might want to have strong typing on your data in Spark. The best to get it is to DataSet insted of DataFrame. In this post I give…
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…
