m1a2st commented on code in PR #18756:
URL: https://github.com/apache/kafka/pull/18756#discussion_r1939685544
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docs/upgrade.html:
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@@ -207,6 +228,38 @@ <h5><a id="upgrade_400_notable"
href="#upgrade_400_notable">Notable changes in 4
</li>
<li><b>Consumer</b>
<ul>
+ <li>New Consumer Group Rebalance Protocol
+ <ul>
+ <li>Client support for the new Consumer Group
Rebalance Protocol is now production ready.
+ To use it, set the new consumer config
<code>group.protocol=CONSUMER</code>.
+ This will make the consumer benefit from
the next generation of the rebalance protocol
+ (see <a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-848%3A+The+Next+Generation+of+the+Consumer+Rebalance+Protocol";>KIP-848</a>),
+ and also the improved consumer threading
model.
+ </li>
+ <li>
+ <code>group.remote.assignor</code> is
introduced as an optional config, supported only if using the Consumer protocol.
+ It allows clients to overwrite the default
assignment strategy configured on the broker.
+ </li>
+ <li>The following are not supported if using
the new Consumer protocol:
+ <ul>
+
<li><code>heartbeat.interval.ms</code></li>
+
<li><code>session.timeout.ms</code></li>
+
<li><code>partition.assignment.strategy</code></li>
+
<li><code>enforceRebalance(String)</code> and
<code>enforceRebalance()</code></li>
+ All continue to be supported if using
the Classic protocol.
+ </ul>
Review Comment:
Should we separater from config and Consumer method?
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