dajac commented on code in PR #19856:
URL: https://github.com/apache/kafka/pull/19856#discussion_r2123327253
##########
clients/src/main/java/org/apache/kafka/clients/GroupRebalanceConfig.java:
##########
@@ -53,8 +54,15 @@ public GroupRebalanceConfig(AbstractConfig config,
ProtocolType protocolType) {
// Consumer and Connect use different config names for defining
rebalance timeout
if ((protocolType == ProtocolType.CONSUMER) || (protocolType ==
ProtocolType.SHARE)) {
this.rebalanceTimeoutMs =
config.getInt(CommonClientConfigs.MAX_POLL_INTERVAL_MS_CONFIG);
+ // Connect doesn't support rack id.
+ // The GroupCoordinatorService throws error if the rackId is
empty. The default value of client.rack is empty string.
+ // Skip empty rackId to avoid InvalidRequestException.
+ this.rackId =
config.getString(CommonClientConfigs.CLIENT_RACK_CONFIG).isEmpty() ?
+ Optional.empty() :
+
Optional.of(config.getString(CommonClientConfigs.CLIENT_RACK_CONFIG));
Review Comment:
In `ConsumerCoordinator`, we have the following code:
```
this.rackId = rackId == null || rackId.isEmpty() ? Optional.empty() :
Optional.of(rackId);
```
Hence, we can use the same logic for the classic protocol. I wonder if we
could just do the following here for all protocols.
```
String rackId = config.getString(CommonClientConfigs.CLIENT_RACK_CONFIG);
this.rackId = rackId == null || rackId.isEmpty() ? Optional.empty() :
Optional.of(rackId);
```
We may also want to update `ConsumerCoordinator` to get it from
`GroupRebalanceConfig` too.
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/ConsumerHeartbeatRequestManager.java:
##########
@@ -306,6 +307,13 @@ public ConsumerGroupHeartbeatRequestData
buildRequestData() {
sentFields.localAssignment = local;
}
+ // RackId - sent when joining or if it has changed since the last
heartbeat
+ String rackId = membershipManager.rackId().orElse(null);
+ if (sendAllFields || !Objects.equals(rackId, sentFields.rackId)) {
+ data.setRackId(rackId);
+ sentFields.rackId = rackId;
+ }
Review Comment:
Could we also test this?
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