This repo is intended to demonstrate an issue with the maven-avro-schema-plugin, pertaining to zolyfarkas/spf4j#43.
Running mvn clean compile as is will genarate the following error:
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.823 s
[INFO] Finished at: 2020-04-07T11:44:28-04:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.spf4j:maven-avro-schema-plugin:8.8.0:avro-compile (default-avro-compile) on project avdl-demo: cannot add mvnId to IDL /home/mat/code/avdl-demo/src/main/avro/A.avdl, Unable to resolve com.example.avro.timestamp_ms -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
But if you comment out the maven-avro-schema-plugin from the pom.xml, and uncomment the avro-maven-plugin, you'll see the project build successfully.
The issue seems to center around the use of timestamp_ms as a type in avdl. This is a logical type that Avro IDL itself does support, as stated in their documentation.