Hi, Assume A and B are two brokers in a kafka server. And there is long network Latency between A and B. For a partition with two replications, one replication Is assigned to A and the other is assigned to B. Number of acknowledge is set to one. Assume the partition is handled by broker A.
After a message is accepted and saved by A, ack will be sent and the message will be sent to broker B at the same time. But due to long network latency between A and B, it is possible that B lags behind A. In this case, is there a buffer on broker A that holds all messages to be written to B? Is there any limit on the lag between A and B? Compare with the case when there is no network latency between A and B, any difference in publishing speed? Thanks Libo
