From 8dccd0ca70254ff9cf8111de259f00b632ce8cb7 Mon Sep 17 00:00:00 2001
From: yukun <kun.yu@zilliz.com>
Date: Mon, 18 Oct 2021 19:48:40 +0800
Subject: [PATCH] [skip ci]Add comments for rocksmq Consume (#10118)

Signed-off-by: fishpenguin <kun.yu@zilliz.com>
---
 internal/util/rocksmq/server/rocksmq/rocksmq_impl.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/internal/util/rocksmq/server/rocksmq/rocksmq_impl.go b/internal/util/rocksmq/server/rocksmq/rocksmq_impl.go
index 3c355185a5..49fb425f5f 100644
--- a/internal/util/rocksmq/server/rocksmq/rocksmq_impl.go
+++ b/internal/util/rocksmq/server/rocksmq/rocksmq_impl.go
@@ -572,6 +572,10 @@ func (rmq *rocksmq) updatePageInfo(topicName string, msgIDs []UniqueID, msgSizes
 	return nil
 }
 
+// Consume steps:
+// 1. Consume n messages from rocksdb
+// 2. Update current_id to the last consumed message
+// 3. Update ack informations in rocksdb
 func (rmq *rocksmq) Consume(topicName string, groupName string, n int) ([]ConsumerMessage, error) {
 	ll, ok := topicMu.Load(topicName)
 	if !ok {