fix: don't log 404 errors when checking for existence

Author: jt55401

sparkcc.py

@@ -804,6 +804,8 @@ def check_for_output_file(self, uri, base_uri=None):
                 self.get_s3_client().head_object(Bucket=bucketname, Key=path)
                 return True
             except botocore.client.ClientError as exception:
+                if exception.response['Error']['Code'] == '404':
+                    return False
                 self.get_logger().error(
                     'Failed to check if file exists on S3 {}: {}'.format(uri, exception))
                 return False