response = null;
break;
case MQResponseCode.PULL_NOT_FOUND_VALUE:
// 长轮询
if (brokerAllowSuspend && hasSuspendFlag) {
PullRequest pullRequest =
new PullRequest(request, channel, suspendTimeoutMillisLong, this.brokerController
.getMessageStore().now(), requestHeader.getQueueOffset());
this.brokerController.getPullRequestHoldService().suspendPullRequest(
requestHeader.getTopic(), requestHeader.getQueueId(), pullRequest);
response = null;
break;