The idea with this project is to learn the basis about how to use spark with generated ROOT files from LHC experiment. printing schema again. this is one field, but what is it mean? CREATING TEMP TABLE, I prefer to use SQL instead of map, reduce and other stuff functions… Doing more imports… Here i […]
Recently I have been very busy for health reasons in myself, taking care of myself, going to the hospital to receive treatment, taking care of my parents too, who are already an age, so I have not been able to devote as much time as one would like to the blog, but some time I […]
Recently, I made a fork of a project, thanks Marcos, in GitHub that allows to create a spark cluster using Docker, that is to say, it is specially indicated if you have a great machine to your disposition, of those of several cores, a lot of RAM memory and a lot of hard disk. I […]
Mental note about an important concept, a number is idempotent if such a number by multiplying itself successive times gives itself, that is the formal, mathematical explanation. By now, an idempotent operation should be treated like numbers. Basically, we need this numbers to identify an event in a distributed system. Applied to message brokers, an […]
Recently I have been programming with the api stream that appeared with the api java8 to have fun, learn something and maintain the form, because I’ve been on a medical leave for a while. The program consists of dealing with collections of numbers using different structures, like LinkedHashMap, Hashset, Set, etc. The idea was to […]
Recientemente he estado programando con la api stream que apareció con la api java8 para divertirme, aprender algo y mantener la forma, debido a que llevo un tiempo en una baja médica. El programa consiste en tratar con colecciones de números usando diferentes estructuras, como LinkedHashMap, Hashset, Set, etc… La idea era poder mostrar una […]
Good companions, I wanted to share something that surely we have all had to face, to count the number of apparitions of the words in a file.Imagine you have a file with the following content: Using a unix script like the one below: Have fun! Alonso.