Rokko11 ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=712020%... ) *commented* on HSEARCH-4867 ( https://hibernate.atlassian.net/browse/HSEARCH-4867?atlOrigin=eyJpIjoiMzZ... ) Re: Support AWS OpenSearch Serverless ( https://hibernate.atlassian.net/browse/HSEARCH-4867?atlOrigin=eyJpIjoiMzZ... ) Ok, now I have got a minimal version running on my local machine. What I did: * Making service_name configurable in order to set it to “aoss” * In AwsSigningRequestInterceptor.toAwsRequest I needed to add following line in order to get a valid signature awsRequestBuilder.appendHeader( "x-amz-content-sha256", "required" ) * In ElasticsearchSchemaAccessor.waitForIndexStatus I skip the health check because _cluster/health is not supported for Serverless. * For the MassIndexer I had to skip the FlushWork and RefreshWork. Both _refresh and _flush endpoints return a 404. After these modifications I got the minimal reproducer (see below) running. ( https://hibernate.atlassian.net/browse/HSEARCH-4867#add-comment?atlOrigin... ) Add Comment ( https://hibernate.atlassian.net/browse/HSEARCH-4867#add-comment?atlOrigin... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:3b7cdab )