We happily introduce a white paper of Druid optimized version for Metatron! In the paper, we briefly tell you the background of original Druid development and characteristics of the Druid. Then we summarize performance test results of the original Druid. Lastly, we introduce Metatron and the optimized Druid. Refer to an attachment file for the…
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Since 2016, there have been frequent requests to run SQL in the druid. As a result, Apache Druid introduced it as a experimental feature (http://druid.io/docs/latest/querying/sql). Using it, we improve the function to support more powerful SQL than original’s. Here you can download the Metatron engine powered by Druid here. Built-in SQL in Apache Druid Apache…
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Graphite, a time series database optimized for time series data collection, is a pretty attractive tool for gathering system metrics. Druid is supporting Graphite emmiter extension in it. This extension emits druid metrics to a graphite carbon server. Detailed configuration information is linked here. This article describes how to monitor the Metatron system log using…
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