See code in NetworkClient :
int latestClientVersion = clientRequest
.apiKey().latestVersion();
if (header.apiVersion() == latestClientVersion) {
...
} else {
log.debug("Using older server API v{} to send {} {} with
correlation id {} to node {
I have run a Multiple Partition and Multiple Consumer application.Then i
have altered the no of Partitions,
in log im getting
Using older server API v0 to send HEARTBEAT {group_id=
altermultipartitionmulticonsumer2,group_generation_id=6,
member_id=C2-b7b4f485-d0c3-466b-b0e7-b3de834832e9} to node
