apache/flink · error · NoAwsCredentialsException

Dynamic session credentials for Flink

Error message

Dynamic session credentials for Flink

What it means

Error "Dynamic session credentials for Flink" thrown in apache/flink.

Source

Thrown at flink-filesystems/flink-s3-fs-base/src/main/java/org/apache/flink/fs/s3/common/token/DynamicTemporaryAWSCredentialsProvider.java:59

@Internal
public class DynamicTemporaryAWSCredentialsProvider implements AWSCredentialsProvider {

    public static final String NAME = DynamicTemporaryAWSCredentialsProvider.class.getName();

    public static final String COMPONENT = "Dynamic session credentials for Flink";

    private static final Logger LOG =
            LoggerFactory.getLogger(DynamicTemporaryAWSCredentialsProvider.class);

    public DynamicTemporaryAWSCredentialsProvider() {}

    public DynamicTemporaryAWSCredentialsProvider(URI uri, Configuration conf) {}

    @Override
    public AWSCredentials getCredentials() throws SdkBaseException {
        Credentials credentials = AbstractS3DelegationTokenReceiver.getCredentials();
        if (credentials == null) {
            throw new NoAwsCredentialsException(COMPONENT);
        }
        LOG.debug("Providing session credentials");
        return new BasicSessionCredentials(
                credentials.getAccessKeyId(),
                credentials.getSecretAccessKey(),
                credentials.getSessionToken());
    }

    @Override
    public void refresh() {
        // Intentionally blank. Credentials are updated by S3DelegationTokenReceiver
    }
}

View on GitHub (pinned to 2f3c205e92)

Solutions

1. Address the cause reported by the error message: Dynamic session credentials for Flink
2. Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry.

Example fix

Correct the condition described ("Dynamic session credentials for Flink") and rerun the job or command.

When it happens

Trigger: Triggered at runtime when the operation fails because: Dynamic session credentials for Flink.

Common situations: Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Dynamic session credentials for Flink.

AI-assisted analysis of apache/flink@2f3c205e92 (2026-08-14). Data as JSON: /api/errors/eef9a8f2012754cb. Report an issue: GitHub.