Request

```
curl -u <CLIENT_ID>:<CLIENT_SECRET> -k -d "grant_type=client_credentials" -H "Content-Type:application/x-www-form-urlencoded" https://<IS_HOST>:<IS_HTTPS_PORT>/oauth2/token
```

Example:

```
curl -u PoEgXP6uVO45IsENRngDXj5Au5Ya:eKsw6z8CtOJVBtrOWvhRWL4TUCga -k -d "grant_type=client_credentials" -H "Content-Type:application/x-www-form-urlencoded" https://localhost:9443/oauth2/token
```

   * are actually available for reading. (For example, some special files may return a size of 0
   * despite actually having content when read.) This means that a source may return {@code true}
   * from {@code isEmpty()} despite having readable content.
   *
   * @throws IOException if an I/O error occurs
   * @since 15.0
   */
  public boolean isEmpty() throws IOException {

//	    "accessPointArn": "...",
//	    "supportingAccessPointArn": "...",
//	    "payload": ""
//	  },
//	  "userRequest": {
//	    "url": "...",
//	    "headers": {
//	      "Host": "...",
//	      "X-Amz-Content-SHA256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
//	    }
//	  },
//	  "userIdentity": {
//	    "type": "IAMUser",
//	    "principalId": "AIDAJF5MO57RFXQCE5ZNC",
//	    "arn": "...",

			// and SSE-S3 is specified do not preserve
			// the incoming etag.
			userDefined["etag"] = opts.PreserveETag
		}
	}

	// Guess content-type from the extension if possible.
	if userDefined["content-type"] == "" {
		userDefined["content-type"] = mimedb.TypeByExtension(path.Ext(object))
	}

	// if storageClass is standard no need to save it as part of metadata.

      "important_content": {
        "type": "text",
        "analyzer": "standard_analyzer",
        "search_analyzer": "standard_search_analyzer",
        "term_vector": "with_positions_offsets"
      },
      "content": {
        "type": "text",
        "analyzer": "standard_analyzer",
        "search_analyzer": "standard_search_analyzer",
        "term_vector": "with_positions_offsets"
      },
      "content_minhash": {

            if (propertyDoc.getDescription() == null) {
                throw new RuntimeException(String.format("Docbook content for '%s.%s' does not contain a description paragraph.", classDoc.getName(), propName));
            }

            props.put(propName, propertyDoc);
        }

		return
	}

	// Content-Md5 is required should be set
	// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
	if _, ok := r.Header[xhttp.ContentMD5]; !ok {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentMD5), r.URL)
		return
	}

	// Content-Length is required and should be non-zero

ä¥MTimeÓ ¹ôc â N§MetaSys ¼x-minio-internal-inline-dataÄ true§MetaUsr‚¬content-type¸application/octet-stream¤etagÙ 9fe7a344ef4227d3e537¡vÎeçnÐÄ$•Ä sÉöQð#Ef° ÌS Û|âÓ ¹ôb Îf­Ä ñ.È´ Å Mƒ¤Type ¥V2ObjÞ ¢IDÄ sÉöQð#Ef° ÌS Û|â¤DDirÄ #" ‘³sF"¥ URÄ,C ¦EcAlgo £EcM £EcN §EcBSizeÒ §EcIndex ¦EcDist” ¨CSumAlgo ¨PartNums‘ ©PartETagsÀ©PartSizes‘Ñ äªPartASizes‘Ñ ä¤SizeÑ ä¥MTimeÓ ¹ôb Îf­§MetaSys ¼x-minio-internal-inline-dataÄ true§MetaUsr‚¬content-type¸application/octet-stream¤etagÙ 9fe7a344ef4227d3e537¡vÎeçnÐÎÍ 0Ø ...

  val responseCode = code
  if ((responseCode < HTTP_CONTINUE || responseCode >= 200) &&
    responseCode != HTTP_NO_CONTENT &&
    responseCode != HTTP_NOT_MODIFIED
  ) {
    return true
  }

  // If the Content-Length or Transfer-Encoding headers disagree with the response code, the
  // response is malformed. For best compatibility, we honor the headers.
  if (headersContentLength() != -1L ||

# Decommissioning

Decommissiong is a mechanism in MinIO to drain older pools (usually with old hardware) and migrate the content from such pools to a newer pools (usually better hardware). Decommissioning spreads the data across all pools - for example, if you decommission `pool1`, all the data from `pool1` spreads across `pool2` and `pool3`.

## Features