mz0113 commented on code in PR #4179:
URL: https://github.com/apache/rocketmq/pull/4179#discussion_r913318999
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client/src/main/java/org/apache/rocketmq/client/latency/MQFaultStrategy.java:
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@@ -69,16 +69,17 @@ public MessageQueue selectOneMessageQueue(final
TopicPublishInfo tpInfo, final S
}
final String notBestBroker =
latencyFaultTolerance.pickOneAtLeast();
- int writeQueueNums = tpInfo.getQueueIdByBroker(notBestBroker);
- if (writeQueueNums > 0) {
- final MessageQueue mq = tpInfo.selectOneMessageQueue();
- if (notBestBroker != null) {
+ if (notBestBroker != null) {
+ int writeQueueNums =
tpInfo.getQueueIdByBroker(notBestBroker);
+ if (writeQueueNums > 0) {
+ MessageQueue mq = new MessageQueue();
+
mq.setTopic(tpInfo.getMessageQueueList().get(0).getTopic());
Review Comment:
> @MatrixHB Second this. Same confusion here. Could you please explain why
directly apply topic 0 here?
the topic of all messageQueue in the tpInfo.getMessageQueueList() is same,so
you can choose any one,but if you get(1,2,3,4,....),may cause
arrayIndexOutOfboundsException,so we get(0),if the size() ==0,it would not go
into this method
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