if (seqNo != null) {
                    builder.setIfSeqNo(seqNo.longValue());
                }
                if (primaryTerm != null) {
                    builder.setIfPrimaryTerm(primaryTerm.longValue());
                }
                response = builder.execute().actionGet(fessConfig.getIndexIndexTimeout());
            }

        Integer value = getSearchEngineHeartbeatIntervalAsInteger();
        if (value != null) {
            return value.longValue();
        }
        value = getAsInteger("elasticsearch.heartbeat_interval");
        if (value != null) {
            return value.longValue();
        }
        return 10000L;
    }