muralibasani commented on code in PR #21676:
URL: https://github.com/apache/kafka/pull/21676#discussion_r3564475762
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clients/src/main/java/org/apache/kafka/clients/producer/ProducerRecord.java:
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@@ -81,6 +83,35 @@ public ProducerRecord(String topic, Integer partition, Long
timestamp, K key, V
this.value = value;
this.timestamp = timestamp;
this.headers = new RecordHeaders(headers);
+ this.rawSerializedHeaders = null;
+ }
+
+ /**
+ * Creates a record carrying pre-serialized header bytes. When this
constructor is used, the
+ * producer writes {@code rawSerializedHeaders} directly into the record
batch without
+ * deserializing or re-serializing individual headers. The {@code
rawSerializedHeaders} must
+ * use the standard Kafka header wire format: {@code
[count(varint)][header1][header2]...},
+ * or be empty (length 0) for zero headers.
+ *
+ * <p>This is intended for internal use (e.g., Kafka Streams changelog
writing) where headers
+ * are already available in serialized form and the deserialization
round-trip should be avoided.
+ */
+ public ProducerRecord(String topic, Integer partition, Long timestamp, K
key, V value, byte[] rawSerializedHeaders) {
Review Comment:
Thanks @aliehsaeedii
Agree with the kip process and the need to avoid it.
I've switched to the internal-carrier approach like you mentioned and also
dropped the public API.
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