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refine get counter performance #21149

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refine get counter performance #21149

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6 changes: 5 additions & 1 deletion clients/src/main/java/org/apache/kafka/clients/producer/RoundRobinPartitioner.java
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Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,11 @@ public int partition(String topic, Object key, byte[] keyBytes, Object value, by
}

private int nextValue(String topic) {
AtomicInteger counter = topicCounterMap.computeIfAbsent(topic, k -> new AtomicInteger(0));
AtomicInteger counter = topicCounterMap.get(topic);
if(counter == null) {
counter = new AtomicInteger(0);
AtomicInteger counter = topicCounterMap.putIfAbsent(topic, counter);
}
return counter.getAndIncrement();
}

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