joeCarf commented on code in PR #7460:
URL: https://github.com/apache/rocketmq/pull/7460#discussion_r1359144932
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broker/src/main/java/org/apache/rocketmq/broker/client/ProducerManager.java:
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@@ -212,34 +207,34 @@ public Channel getAvailableChannel(String groupId) {
List<Channel> channelList;
ConcurrentHashMap<Channel, ClientChannelInfo>
channelClientChannelInfoHashMap = groupChannelTable.get(groupId);
if (channelClientChannelInfoHashMap != null) {
+ if (channelClientChannelInfoHashMap.size() == 0) {
Review Comment:
will it be better using `MapUtils.isEmpty()`
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