set := s.getHashedSet(object)
	return set.PutObjectPart(ctx, bucket, object, uploadID, partID, data, opts)
}

// GetMultipartInfo - return multipart metadata info uploaded at hashedSet.

	"response-content-encoding",
	"response-content-language",
	"response-content-type",
	"response-expires",
	"retention",
	"select",
	"select-type",
	"tagging",
	"torrent",
	"uploadId",
	"uploads",
	"versionId",
	"versioning",
	"versions",
	"website",
}

// Signature and API related constants.
const (
	signV2Algorithm = "AWS"
)

// AWS S3 Signature V2 calculation rule is give here:

	}

	response := generateInitiateMultipartUploadResponse(bucket, object, res.UploadID)
	if res.ChecksumAlgo != "" {
		w.Header().Set(xhttp.AmzChecksumAlgo, res.ChecksumAlgo)
	}
	encodedSuccessResponse := encodeResponse(response)

	// Write success response.
	writeSuccessResponseXML(w, encodedSuccessResponse)
}

// CopyObjectPartHandler - uploads a part by copying data from an existing object as data source.

}

// ListMultipartUploadsHandler - GET Bucket (List Multipart uploads)
// -------------------------
// This operation lists in-progress multipart uploads. An in-progress
// multipart upload is a multipart upload that has been initiated,
// using the Initiate Multipart Upload request, but has not yet been
// completed or aborted. This operation returns at most 1,000 multipart
// uploads in the response.

	"github.com/minio/minio/internal/logger"
)

func hashLogIf(ctx context.Context, err error) {
	logger.LogIf(ctx, "hash", err)
}

// MinIOMultipartChecksum is as metadata on multipart uploads to indicate checksum type.
const MinIOMultipartChecksum = "x-minio-multipart-checksum"

// ChecksumType contains information about the checksum type.
type ChecksumType uint32

const (

				return
			}
			// push the obtained upload ID from the response into the array.
			testUploads.Lock()
			testUploads.uploads = append(testUploads.uploads, multipartResponse.UploadID)
			testUploads.Unlock()
		}()
	}
	// Wait till all go routines finishes execution.
	wg.Wait()
	// Validate the upload ID by an attempt to list parts using it.
	for _, uploadID := range testUploads.uploads {

```

### Step 3: Test with Thumbnailer

We used [Thumbnailer](https://github.com/minio/thumbnailer) to listen for MinIO notifications when a new JPEG file is uploaded (HTTP PUT). Triggered by a notification, Thumbnailer uploads a thumbnail of new image to MinIO server. To start with, download and install Thumbnailer.

```
git clone https://github.com/minio/thumbnailer/
npm install
```

	}
	if err != nil {
		return err
	}

	defer func() {
		if err != nil {
			// block and abort remote upload upon failure.
			attempts := 1
			for attempts <= 3 {
				actx, acancel := context.WithTimeout(ctx, time.Minute)
				aerr := c.AbortMultipartUpload(actx, bucket, object, uploadID)
				acancel()
				if aerr == nil {
					return
				}
				attempts++

		HTTPStatusCode: http.StatusNotFound,
	},
	ErrNoSuchUpload: {
		Code:           "NoSuchUpload",
		Description:    "The specified multipart upload does not exist. The upload ID may be invalid, or the upload may have been aborted or completed.",
		HTTPStatusCode: http.StatusNotFound,
	},
	ErrInvalidVersionID: {
		Code:           "InvalidArgument",

	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}
	if bytesBuffer.String() != "The specified multipart upload does not exist. The upload ID might be invalid, or the multipart upload might have been aborted or completed." {
		t.Errorf("%s: Invalid upload ID error mismatch.", instanceType)
	}
}

// Wrapper for calling testNonExistentBucketOperations for both Erasure and FS.