GitHub user leizhiyuan added a comment to the discussion: sometimes broker send
messages to consumer,but consumer can not receive
```
Future<Void> writeAndFlushPromise =
cnx.getCommandSender().sendMessagesToConsumer(consumerId,
topicName, subscription, partitionIdx,
entries, batchSizes, batchIndexesAcks,
redeliveryTracker, epoch);
writeAndFlushPromise.addListener(status -> {
// only increment counters after the messages have been
successfully written to the TCP/IP connection
if (status.isSuccess()) {
msgOut.recordMultipleEvents(totalMessages, totalBytes);
msgOutCounter.add(totalMessages);
bytesOutCounter.add(totalBytes);
chunkedMessageRate.recordMultipleEvents(totalChunkedMessages,
0);
}
});
```
maybe this write fail
GitHub link:
https://github.com/apache/pulsar/discussions/18377#discussioncomment-4083271
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