jsancio commented on code in PR #19658:
URL: https://github.com/apache/kafka/pull/19658#discussion_r2085061929


##########
raft/src/main/java/org/apache/kafka/raft/RaftUtil.java:
##########
@@ -755,4 +756,18 @@ static boolean 
hasValidTopicPartition(DescribeQuorumRequestData data, TopicParti
                    data.topics().get(0).partitions().size() == 1 &&
                    data.topics().get(0).partitions().get(0).partitionIndex() 
== topicPartition.partition();
     }
+
+    static int binaryExponentialElectionBackoffMs(int backoffMaxMs, int 
backoffBaseMs, int retries, Random random) {
+        if (retries <= 0) {
+            throw new IllegalArgumentException("Retries " + retries + " should 
be larger than zero");
+        }
+        // Takes minimum of the following:
+        // 1. exponential backoff calculation (maxes out at 102.4 seconds)
+        // 2. configurable electionBackoffMaxMs + jitter
+        // The jitter is added to prevent deadlock of elections.

Review Comment:
   I mentioned this in another comment. This is not a deadlock.



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