When creating a dashboard from a data source already loaded in Druid, it is often difficult to visualize with Metatron Discovery when complex queries such as subquery are required. In such a case, it can be solved by creating a Linked Datasource after creating an appropriate query using Druid SQL. 1. Data Set Use the…
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Currently, there are five types of Supported DB in Metatron Discovery. MySQL Hive PostgreSQL Presto Druid But you may need to connect to a DB other than those listed above. For example, Microsoft SQL Server. It is not so difficult if the DB you want to connect to provides a JDBC driver. Add the connection…
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In a previous post we looked at how to put data into a druid via Metatron Discovery, and summarized some things to note. What to keep in mind when ingesting a data source to Druid from Metatron Discovery This time, I’ll show you how to deal with data ingestion failures. Check for data source load…
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Getting data into a druid is not an easy job. This is especially difficult for those who are new to Druid. You have to set up unfamiliar options such as segment and granularity. And it is not easy to find out why when ingestion fails. So, today, I’ve just made a point of what to…
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