CalvinConfluent commented on code in PR #17952:
URL: https://github.com/apache/kafka/pull/17952#discussion_r1887340507
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metadata/src/main/java/org/apache/kafka/controller/ConfigurationControlManager.java:
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@@ -497,10 +541,63 @@ public Map<ConfigResource, ResultOrError<Map<String,
String>>> describeConfigs(
return results;
}
+ // The function is used when enabling ELR. It will create a new cluster
level min ISR config if there is not any.
+ // Also, it will remove all the broker level min ISR config records.
+ void maybeResetMinIsrConfig(List<ApiMessageAndVersion> outputRecords) {
+ if (!clusterConfig().containsKey(MIN_IN_SYNC_REPLICAS_CONFIG)) {
+ String minIsrDefaultConfigValue =
configSchema.getStaticOrDefaultConfig(
+ MIN_IN_SYNC_REPLICAS_CONFIG,
+ staticConfig
+ );
+ ApiError error = incrementalAlterConfigResource(
+ DEFAULT_NODE,
+ Map.of(MIN_IN_SYNC_REPLICAS_CONFIG, new
AbstractMap.SimpleEntry<>(SET, minIsrDefaultConfigValue)),
+ true,
+ outputRecords
+ );
+ if (error.isFailure()) {
+ log.error("Fail to update cluster level min ISR config during
the min ISR config reset: " + error);
+ }
+ }
+
+ Set<Integer> nodes = clusterControl.brokerRegistrations().keySet();
Review Comment:
Makes sense, it is much better just to check the existing configs.
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