Deployment to Payara fails due to lifecycle failure in DefaultWatchThread

[jcosmo]

Expected Behavior

Create a relatively simple app from micronaut launch.
Add micronaut-servlet.
Package as a war.
Deploy to payara.

Deployment should have worked

Actual Behaviour

Deployment fails with the error:
The return type of the lifecycle method [start] must be void. Related annotation information: annotation [@javax.annotation.PostConstruct()] on annotated element [public io.micronaut.scheduling.io.watch.DefaultWatchThread io.micronaut.scheduling.io.watch.DefaultWatchThread.start()] of type [METHOD]

Steps To Reproduce

Via micronaut launch, take a vanilla application, java 17, groovy.

add to build.gradle:
developmentOnly("io.micronaut.servlet:micronaut-http-server-tomcat:4.9.2")
implementation("io.micronaut.servlet:micronaut-servlet-engine:4.9.2")
plugins: id "war"

build war, deploy to payara

Environment Information

JDK 17
Ubuntu linux
Payara 5.2022.5, or Payara 6.2024.6 (latest)

Example Application

demo.zip

Version

4.4.0

[graemerocher]

I believe you have to disable annotation scanning on the server

[graemerocher]

See https://blog.payara.fish/cdi-scanning-in-payara-server

[jcosmo]

I was aware of the need to disable CDI scanning, and have done so. Sorry, should have made that clearer in the instructions.

Though, maybe, the value in the deployment descriptor in the war is overriding the console. I shall check.

Result of checking:

• It's a war, not an ear, so no deployment descriptor.
• The console value wins in all cases unless the deployment descriptor forces the value to true.
• Thus I believe I've correctly attempted to deploy with Implicit CDI disabled.