cryptoe commented on code in PR #12339:
URL: https://github.com/apache/druid/pull/12339#discussion_r841385835


##########
extensions-core/s3-extensions/src/main/java/org/apache/druid/data/input/s3/S3InputSource.java:
##########
@@ -166,15 +175,21 @@ private void applyAssumeRole(
       AWSCredentialsProvider awsCredentialsProvider
   )
   {
-    String assumeRoleArn = s3InputSourceConfig.getAssumeRoleArn();
-    if (assumeRoleArn != null) {
+    // Do not run if WebIdentityToken file and assumeRole ARN are detected 
from the environment variable,
+    // we want the default s3ClientBuilder behavior for ServiceAccount + 
eks.amazonaws.com/role-arn annotation to work.

Review Comment:
   Based on reading: 
https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithWebIdentity.html
 IMHO `AWS_WEB_IDENTITY_TOKEN_FILE` should be the lowest priority of 
authentication that we should support as it looks like its more supported for 
short duration access to AWS services. 
   However, I would somehow first check why AWS_ROLE_ARN got picked up. Are you 
specifying it in the ingestion spec somewhere?
    
   



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