}
				}
				continue
			}
			fivs, err := entry.fileInfoVersions(bucket)
			if err != nil {
				return
			}

			// Note: entry.fileInfoVersions returns versions sorted in reverse chronological order based on ModTime
			if opts.VersionsSort == WalkVersionsSortAsc {
				versionsSorter(fivs.Versions).reverse()
			}

			for _, version := range fivs.Versions {
				if opts.Filter != nil {

				offline++
			}
		}
		if offline > 0 {
			tags["offline"] = offline
		}

		_, file, line, cok := runtime.Caller(1)
		if cok {
			tags["caller"] = fmt.Sprintf("%s:%d", file, line)
		}

		defer auditDanglingObjectDeletion(ctx, bucket, object, m.VersionID, tags)

		err = errFileNotFound
		if opts.VersionID != "" {

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrMissingHeaders: {
		Code:           "MissingHeaders",
		Description:    "Some headers in the query are missing from the file. Check the file and try again.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidColumnIndex: {
		Code:           "InvalidColumnIndex",

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "minio_node_file_descriptor_open_total{job=~\"$scrape_jobs\"}",
          "interval": "",
          "legendFormat": "Open FDs [{{server}}]",
          "refId": "B"
        }
      ],
      "title": "File Descriptors",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

		return osErrToFileErr(err)
	}

	// Close the file descriptor.
	defer file.Close()
	fi, err := file.Stat()
	if err != nil {
		// Unable to stat on the file, return an expected error
		// for healing code to fix this file.
		return err
	}
	return bitrotVerify(diskHealthReader(ctx, file), fi.Size(), partSize, algo, sum, shardSize)
}

        "__attr__file_extension": "jpg",
        "__attr__data": null
      }
    }
  ],
  "data": "asdascasdc1234e123erdasdas"
}`,
			wantResult: `{"element_type":"__elem__merfu","element_id":"d868aefe-ef9a-4be2-b9b2-c9fd89cc43eb","attributes":{"__attr__image_dpi":300,"__attr__image_size":[2550,3299],"__attr__image_index":2,"__attr__image_format":"JPEG","__attr__file_extension":"jpg","__attr__data":null}}`,
		},

	iamConfigPolicyDBGroupsPrefix          = iamConfigPolicyDBPrefix + "groups/"

	// IAM identity file which captures identity credentials.
	iamIdentityFile = "identity.json"

	// IAM policy file which provides policies for each users.
	iamPolicyFile = "policy.json"

	// IAM group members file
	iamGroupMembersFile = "members.json"

	// IAM format file
	iamFormatFile = "format.json"

	iamFormatVersion1 = 1

		name            string
		content         string
		meta            map[string]string
		versionID       string
		expectDelMarker bool
	}{
		{testBuckets[0], "delete-file", "contentstring", nil, "", true},
		{testBuckets[1], "delete-file", "contentstring", nil, "null", false},
	}
	for _, object := range testObjects {
		md5Bytes := md5.Sum([]byte(object.content))