Thanks Guozhang,
So increasing batch.size can lead to more duplicates in case of failure.
Also when you said : "The broker will accept a batch of records as a whole
or reject them ". For example, if a producer request contains two batches,
a first one for Topic A / Partition 0 and a second one fo
Hi Florian,
The broker will accept a batch of records as a whole or reject them as a
whole unless it encounters an IOException while trying to append the
messages, which will be treated as a fatal error anyways.
Duplicates usually happen when the whole batch is accepted but the ack was
not delive
