Author: Valentin Nikotin

Blazing Disk IO with Java

It’s well known that mmap helps to improve performance in particular use-cases (especially if your working set fits an available memory). This doesn’t mean that the file itself has to fit memory. mmaps provides real benefits over the other IO…

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Issues with triggers in Cloudera manager

Valentin Nikotin explains why triggers in Cloudera Manager is a very useful feature, as well as how you can set them up to monitor tons of available metrics using tsquery language.

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Recursion in Hive – part 1

In Part 1 of this series, Valentin Nikotin, will teach you about migrating from RDBMS to Hive, while maintaining the simplicity and flexibility of a SQL approach.

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