[GitHub] [maven-mvnd] Stephan202 commented on issue #572: Support for MAVEN_OPTS

[GitBox <gi...@apache.org>]

Stephan202 commented on issue #572:
URL: https://github.com/apache/maven-mvnd/issues/572#issuecomment-1007383778


   Two-cents drive-by comment: generally more specific settings should override more general settings. System properties are more specific than environment variables, since the former are per-JVM, while an environment can contain multiple JVMs. Similarly, between on-disk properties and environment properties I would say that the latter should take precedence, since the latter can be specificed per-process, while the former apply to all processes.
   
   I.e., in order from highest to lower precedence:
   - The `mvnd.jvmArgs` system property.
   - The `MAVEN_OPTS` environment property.
   - The `mvnd.properties` properties file.
   
   Afaik most software follows these rules. Examples include [Spring](https://docs.spring.io/spring-boot/docs/2.5.1/reference/html/features.html#features.external-config) and the [AWS SDK](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/auth/credentials/DefaultCredentialsProvider.html).


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