1u0 commented on issue #9318: [FLINK-13044][s3][fs] Fix handling of relocated amazon classes URL: https://github.com/apache/flink/pull/9318#issuecomment-518173209 It looks like it's an another issue with Presto fs: the `com.amazonaws.auth.EnvironmentVariableCredentialsProvider` is not suitable `AWSCredentialsProvider` for `com.facebook.presto.hive.s3.PrestoS3FileSystem`. From [Prestodb documentation](https://prestodb.github.io/docs/current/connector/hive.html#amazon-s3-configuration): > You can configure a custom S3 credentials provider by setting the Hadoop configuration property presto.s3.credentials-provider to be the fully qualified class name of a custom AWS credentials provider implementation. This class must implement the `AWSCredentialsProvider` interface and provide a two-argument constructor that takes a `java.net.URI` and a Hadoop `org.apache.hadoop.conf.Configuration` as arguments. The versions of `EnvironmentVariableCredentialsProvider` we are using have only trivial constructor.
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