jolshan commented on code in PR #15968:
URL: https://github.com/apache/kafka/pull/15968#discussion_r1639071024


##########
clients/src/main/java/org/apache/kafka/clients/ApiVersions.java:
##########
@@ -34,10 +34,21 @@ public class ApiVersions {
 
     private final Map<String, NodeApiVersions> nodeApiVersions = new 
HashMap<>();
     private byte maxUsableProduceMagic = RecordBatch.CURRENT_MAGIC_VALUE;
+    private short maxProduceSupportedVersion = ApiKeys.PRODUCE.latestVersion();
 
     public synchronized void update(String nodeId, NodeApiVersions 
nodeApiVersions) {
         this.nodeApiVersions.put(nodeId, nodeApiVersions);
         this.maxUsableProduceMagic = computeMaxUsableProduceMagic();
+        this.maxProduceSupportedVersion = computeMaxProduceSupportedVersion();
+    }
+
+    private short computeMaxProduceSupportedVersion() {
+        Optional<Short> knownBrokerNodesMinSupportedVersionForProduce = 
this.nodeApiVersions.values().stream()

Review Comment:
   sounds good. this is consistent with the fetching logic 👍 



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