Unknown provider[postgresql] of Key[type=org.apache.druid.metadata.MetadataStorageProvider

Apache Druid Q&A Deployment
#1

Hi, I am deploying apache-druid:0.20.1 on Kube. I am getting error:

Unknown provider[postgresql] of Key[type=org.apache.druid.metadata.MetadataStorageProvider, annotation=[none]],

I have postgresql-metadata-storage in extension.loadlist though. I also tried changing the order of extensions and keeping postgres before S3, but still facing the issue. Please suggest. Thanks.

#2

Suggest checking that common.runtime.properties on all your nodes is sync’d OK, and you might also want to check that the extensions folder includes the postgresql-metadata-storage folder.

You can use the /status API to confirm loaded extensions on each service, too - they appear in the modules section.