Monthly Archives: December 2018

Doing data science on my health data in R Studio – Part 1

Posted on December 21, 2018 by Marcel-Jan Krijgsman

Up to seven years ago my doctor would nag me every half year that I should lose some weight. Nagging didn’t work on me that much. What did work however was competition. I wanted to become faster in a bike … Continue reading →

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Check your /tmp on HDFS

Posted on December 19, 2018 by Marcel-Jan Krijgsman

If you have sensitive data on your Hadoop cluster, you might want to check /tmp on HDFS once a while to see what ends up there. /tmp is used by several components. Hive for example stores its “scratch data” there. … Continue reading →

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Tech dossier: Elasticsearch / the ELK stack

Posted on December 3, 2018 by Marcel-Jan Krijgsman

Because tech is moving so fast, I’ve been keeping dossiers in Evernote of open source products I have to learn more of, which I’ve decided to put on my blog. My last one was about Kubernetes. This one is about … Continue reading →

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Tech dossier: Kubernetes

Posted on December 1, 2018 by Marcel-Jan Krijgsman

Because tech is moving so fast, I’ve been keeping dossiers in Evernote of open source products I have to learn more of. Like Kubernetes. This morning I suddenly thought this would be perfect for a blog.. if properly organized. My … Continue reading →

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