public static String buildId(String instanceId, String name) {
            if (StringUtil.isBlank(name)) {
                name = Const.BLANK_ENTITY_NAME;
            }
            return Hashing.sha256().newHasher().putString(String.format("%s_%s",
                                                                        name, instanceId
            ), Charsets.UTF_8).hash().toString();
        }
@param instanceId built by {@link ServiceInstanceID#buildId(String, String)}
@param name       process name
@return process id
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/IDManager.java