coderzc commented on code in PR #21578:
URL: https://github.com/apache/pulsar/pull/21578#discussion_r1395079638
##########
pulsar-broker/src/main/java/org/apache/pulsar/client/impl/RawBatchConverter.java:
##########
@@ -129,9 +139,14 @@ public static Optional<RawMessage>
rebatchMessage(RawMessage msg,
msg.getMessageIdData().getPartition(),
i);
if (!singleMessageMetadata.hasPartitionKey()) {
- messagesRetained++;
-
Commands.serializeSingleMessageInBatchWithPayload(singleMessageMetadata,
-
singleMessagePayload, batchBuffer);
+ if (retainNullKey) {
+ messagesRetained++;
+
Commands.serializeSingleMessageInBatchWithPayload(singleMessageMetadata,
+ singleMessagePayload, batchBuffer);
+ } else {
+
Commands.serializeSingleMessageInBatchWithPayload(emptyMetadata,
Review Comment:
The empty metadata set `compactedOut=true`, the client will filter out this
message.
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