What is the best way to use Databricks database data in a Java application?

php editor Yuzai brings you java Q&A: What is the best way to use Databricks database data in Java applications? In actual development, it is a common question for Java applications how to efficiently operate Databricks database data. This article will introduce best practices and techniques to help developers better utilize the Databricks database and improve data processing efficiency and performance.

Question content

I need to retrieve data stored in the Databricks platform. I can see that it can be achieved using the Databricks-SDK as well as the Databricks API route, but don't see anywhere the best way to get the data.

If you can find any other better way, please let me know.

Any help/advice here is greatly appreciated.

Solution

For spring, the easiest way is to use Databricks JDBC driver, which provides very good performance, especially when you need to get large chunks of data hour. The driver is available on Maven Central at the following coordinates:

<dependency>
    <groupId>com.databricks</groupId>
    <artifactId>databricks-jdbc</artifactId>
    <version>2.6.34</version>
    <scope>runtime</scope>
</dependency>

Afterwards you can use it as another jdbc data source via a jdbc url like jdbc:databricks://... (the exact string depends on the configuration). I have a small example from spring using it (not very idiomatic though).

An alternative is to use the Databricks SQL Statement Execution REST API, but this usually requires more work to authenticate, wait for results, decode the data, etc. Although Databricks Java SDK simplifies its usage, so you can use it if you don't want to use jdbc.

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