if (this.brokerConfig.getNamesrvAddr() != null) {
this.brokerOuterAPI.updateNameServerAddressList(this.brokerConfig.getNamesrvAddr());
log.info("user specfied name server address: {}", this.brokerConfig.getNamesrvAddr());
}
this.slaveSynchronize = new SlaveSynchronize(this);
this.digestLogManager = new DigestLogManager(this);
this.sendThreadPoolQueue =
new LinkedBlockingQueue<Runnable>(this.brokerConfig.getSendThreadPoolQueueCapacity());