tillOffset, DefaultBitrotAlgorithm, erasure.ShardSize())
				}
			}

			// Heal each part. erasure.Heal() will write the healed
			// part to .minio/tmp/uuid/ which needs to be renamed
			// later to the final location.
			err = erasure.Heal(ctx, writers, readers, partSize, prefer)
			closeBitrotReaders(readers)
			closeBitrotWriters(writers)
			if err != nil {

			}

			item.heal.enabled = thisHash.modAlt(f.oldCache.Info.NextCycle/folder.objectHealProbDiv, f.healObjectSelect/folder.objectHealProbDiv) && globalIsErasure
			item.heal.bitrot = f.scanMode == madmin.HealDeepScan

			// if the drive belongs to an erasure set
			// that is already being healed, skip the
			// healing attempt on this drive.
			item.heal.enabled = item.heal.enabled && f.healObjectSelect > 0

			return Failed
		case Complete:
			completed++
		}
	}
	if completed == len(m) {
		return Complete
	}
	return Pending
}

// getHealReplicateObjectInfo returns info needed by heal replication in ReplicateObjectInfo
func getHealReplicateObjectInfo(oi ObjectInfo, rcfg replicationConfig) ReplicateObjectInfo {
	userDefined := cloneMSS(oi.UserDefined)
	if rcfg.Config != nil && rcfg.Config.RoleArn != "" {

func _() {
	// An "invalid array index" compiler error signifies that the constant values have changed.
	// Re-run the stringer command to generate them again.
	var x [1]struct{}
	_ = x[lcEventSrc_None-0]
	_ = x[lcEventSrc_Heal-1]
	_ = x[lcEventSrc_Scanner-2]
	_ = x[lcEventSrc_Decom-3]
	_ = x[lcEventSrc_Rebal-4]
	_ = x[lcEventSrc_s3HeadObject-5]
	_ = x[lcEventSrc_s3GetObject-6]
	_ = x[lcEventSrc_s3ListObjects-7]

		}

		bytesWritten += n
	}

	if bytesWritten != length {
		return bytesWritten, errLessData
	}

	return bytesWritten, derr
}

// Heal reads from readers, reconstruct shards and writes the data to the writers.
func (e Erasure) Heal(ctx context.Context, writers []io.Writer, readers []io.ReaderAt, totalLength int64, prefer []bool) (derr error) {
	if len(writers) != e.parityBlocks+e.dataBlocks {

     if (all disks return format.json not found)
        return error
     else (some disks return format.json not found)
        (heal format)
        return
     fi
   fi
else
   if (some disks return format.json not found)
        // Offline disks are marked as dead.
        (heal format) // Offline disks should be marked as dead.
        return success
   fi
fi
*/

- To be able to reliably use S3 multipart APIs feature of the SDKs without re-inventing the wheel of pre-signing the each URL in multipart API. This is very tedious to implement with all the scenarios of fault tolerance that's already implemented by the client SDK. The general client SDKs don't support multipart with presigned URLs.