Can the samples written on_publication_matched() be delivered to the reader reliably?

[sfzhang]

Suppose the following scenario:
Writer QoS: KEEP_ALL_HISTORY_QOS + RELIABLE_RELIABILITY_QOS + VOLATILE_DURABILITY_QOS.
Reader QoS: KEEP_ALL_HISTORY_QOS + RELIABLE_RELIABILITY_QOS + VOLATILE_DURABILITY_QOS.
It seems that the sample written in on_publication_matched() callback function can't be delivered to reader reliably.

void on_publication_matched(fdds::DataWriter *writer, const fdds::PublicationMatchedStatus &info)  {
    if (info.current_count_change >= 1) { // Write on publication matched
        writer->write(&sample);
    }
}

I got the following logs according to time sequence:

1. Writer discovers reader and invoke on_publication_matched() callback function.
2. Writer writes sample in on_publication_matched() callback function.
3. Reader discovers writer and invoke on_superscription_matched() callback function.
4. The sample may LOST forever!

Writer.log

DEBUG|20221009 17:43:17.520435|281473360632080|BaseModule.cpp|virtual void ronovo::dds::PubListener::on_publication_matched(eprosima::fastdds::dds::DataWriter*, const eprosima::fastdds::dds::    PublicationMatchedStatus&)|73|Publisher matched: topic[UserRecScopeSourceAct], matched current_count[2], tid[281473360632080]

DEBUG|20221009 17:43:17.520745|main|BaseModule.cpp|virtual bool ronovo::dds::BaseModule::publish(const string&, void*)|592|write() success: topicName[UserRecScopeSourceAct]

Reader.log

DEBUG|20221009 17:43:17.864511|281472951646480|BaseModule.cpp|virtual void ronovo::dds::SubListener::on_subscription_matched(eprosima::fastdds::dds::DataReader*, const eprosima::fastdds::   dds::SubscriptionMatchedStatus&)|142|Subscriber matched: topic[UserRecScopeSourceAct], matched current_count[1]

And the sample written in on_publication_matched() lost. The matched current_count in Writer.log is 2 is because that I have two readers. One reader can receive the sample, but the other one can't.