BewareMyPower commented on code in PR #18405:
URL: https://github.com/apache/pulsar/pull/18405#discussion_r1018765810
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pulsar-client/src/main/java/org/apache/pulsar/client/impl/MessageIdImpl.java:
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@@ -155,8 +155,14 @@ public static MessageId fromByteArrayWithTopic(byte[]
data, TopicName topicName)
MessageId messageId;
if (idData.hasBatchIndex()) {
- messageId = new BatchMessageIdImpl(idData.getLedgerId(),
idData.getEntryId(), idData.getPartition(),
- idData.getBatchIndex(), idData.getBatchSize(),
BatchMessageAcker.newAcker(idData.getBatchSize()));
+ if (idData.hasBatchSize()) {
Review Comment:
The `batch_size` field was introduced from
https://github.com/apache/pulsar/pull/8659, before that, the `batch_index`
field already existed. For example, the 2.7.1 client could send such a message
id, see https://github.com/apache/pulsar/issues/18395#issuecomment-1309864662.
Other languages clients might also sent a message id that has the
`batch_index` field but no `batch_size` field.
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