aloyszhang edited a comment on pull request #14566:
URL: https://github.com/apache/pulsar/pull/14566#issuecomment-1067689183
@Jason918
After creating a new `ConsumerImpl` for a topic partition, before sending
`FLOW` command, client will check
```java
if (!(firstTimeConnect && hasParentConsumer) &&
getCurrentReceiverQueueSize() != 0) {
increaseAvailablePermits(cnx,
getCurrentReceiverQueueSize());
}
```
`hasParentConsumer` is always `true` for multiTopicConsumer, so the new
created will not send `FLOW` command to broker.
BTW, [#11974](https://github.com/apache/pulsar/pull/11974) introduce
`startPaused` for creating new `ConsumerImpl`, so this pull request is a nice
optimize for me. And left a comment, PTAL.
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