[GitHub] [kafka] showuon commented on a change in pull request #10983: mention IdentityReplicationPolicy in ops docs

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showuon commented on a change in pull request #10983:
URL: https://github.com/apache/kafka/pull/10983#discussion_r665019951



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File path: docs/ops.html
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@@ -845,6 +845,11 @@ <h5 class="anchor-heading"><a id="georeplication-topic-naming" class="anchor-lin
     If you need further control over how replicated topics are named, you can implement a custom <code>ReplicationPolicy</code> and override <code>replication.policy.class</code> (default is <code>DefaultReplicationPolicy</code>) in the MirrorMaker configuration.
   </p>
 
+  <p>
+    As a special case, MirrorMaker includes <a href="https://github.com/apache/kafka/blob/trunk/connect/mirror-client/src/main/java/org/apache/kafka/connect/mirror/IdentityReplicationPolicy.java">IdentityReplicationPolicy</a> (since version 3.0.0), which does not rename topics. This is useful for simple one-way replication topologies, where topic renaming is not strictly necessary; however, be careful not to introduce cycles when using <code>IdentityReplicationPolicy</code>, since this can result in the same records being replicated in an infinite loop.

Review comment:
       I'm not sure if we really need to put the source code link here. 




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