In Apache Spark, secrets can be used in property names to help secure sensitive data. This is done by using the ${{secrets/scope/key}} syntax, where scope is the scope of the secret and key is the key name. However, it is important to note that secrets cannot be used within a string.
spark.conf.set("fs.azure.account.auth.type.{{secrets/my_scope/my_secret1}}.dfs.core.windows.net", "OAuth")
In this example, the secret my_secret1 is being used in the property name. This means that the value of the secret will be substituted into the property name at runtime. In this case, the resulting property name will be fs.azure.account.auth.type.OAuth.dfs.core.windows.net.
There are a few limitations to using secrets in property names:
- Secrets cannot be used within a string. This means that you cannot use a secret to set the value of a property that contains a string.
- Secrets are only supported in certain Spark configurations. For a list of supported configurations, see the Spark documentation.
Using secrets in property names can be a helpful way to secure sensitive data in Apache Spark. However, it is important to be aware of the limitations of this feature before using it.