def upload_thread(self, upload_id, part_number, part_start_index, total):
    """

    :param upload_id: multipart upload id
    :param part_number: 分片数
    :param part_start_index: 分片在文件的偏移位置
    :param total:总分片量
    :return:
    """
    print ("Uploading {} / {}".format(part_number, total))
    with open(MULTIPART_UPLOAD_FILE, "rb") as data:
        retry_time = 0
        while retry_time <= MAX_RETRY_TIME:
            try:
                data.seek(part_start_index)
                self.s3_client.upload_part(
                    Body=data.read(CHUNK_SIZE),
                    Bucket=DESTINATION_BUCKET,
                    Key=MULTIPART_UPLOAD_FILE_NAME,
                    PartNumber=part_number,
                    UploadId=upload_id
                )
                break
            except Exception as e:
                retry_time += 1
                
                if retry_time > MAX_RETRY_TIME:
                    
                    sys.exit(-1)
                time.sleep(5)
    print ("                        Complete {} / {} ".format(part_number, total))