dongeforever commented on a change in pull request #3807:
URL: https://github.com/apache/rocketmq/pull/3807#discussion_r794459816
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File path:
client/src/main/java/org/apache/rocketmq/client/producer/MQProducer.java
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@@ -91,6 +91,10 @@ TransactionSendResult sendMessageInTransaction(final Message
msg,
SendResult send(final Collection<Message> msgs) throws MQClientException,
RemotingException, MQBrokerException,
InterruptedException;
+ // for batch msgs with multi topics.
+ SendResult sendMultiTopicBatch(final Collection<Message> msgs) throws
MQClientException, RemotingException, MQBrokerException,
+ InterruptedException;
+
Review comment:
Who has the responsibility to make sure the messages are to be sent to
the same broker? How to make sure it?
This API may cause many difficulties to be compatible with advanced
features, such as logic queue and message with sharding key.
Only the inner topic route has enough information to decide which broker to
be sent for each message. So the multi-topic batch can only be constructed by
the inner MQClientInstance, but not by the user directly.
IMO, it is necessary to raise a RIP and provide a detailed design for this
feature.
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