lianetm commented on code in PR #19250:
URL: https://github.com/apache/kafka/pull/19250#discussion_r2021118860
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clients/src/main/java/org/apache/kafka/clients/consumer/KafkaConsumer.java:
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@@ -61,9 +61,9 @@
* The consumer is not thread-safe. See <a
href="#multithreaded">Multi-threaded Processing</a> for more details.
*
* <h3>Cross-Version Compatibility</h3>
- * This client can communicate with brokers that are version 0.10.0 or newer.
Older or newer brokers may not support
- * certain features. For example, 0.10.0 brokers do not support
offsetsForTimes, because this feature was added
- * in version 0.10.1. You will receive an {@link
org.apache.kafka.common.errors.UnsupportedVersionException}
+ * This client can communicate with brokers that are version 2.1 or newer.
Older brokers may not support
+ * certain features. For example, 3.9 brokers do not support {@code
subscribe(SubscriptionPattern)}, because this feature was added
+ * in version 4.0. You will receive an {@link
org.apache.kafka.common.errors.UnsupportedVersionException}
Review Comment:
if we want to get there, I would only suggest we add the note along the
lines of "`only supported if using the Consumer group protocol
(group.protocol=Consumer)`" (which is the user-facing config required to get
support for this new subscribe API)
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