[jira] [Commented] (KAFKA-10424) MirrorMaker 2.0 does not replicates topic's "clean.policy"

["Ning Zhang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-10424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17182572#comment-17182572 ] 

Ning Zhang commented on KAFKA-10424:
------------------------------------

[~grinfeld] "_schemas" topic is a compacted topic. When it is replicated, make sure its name on the target cluster prefix with <source_cluster_alias_placeholder>, e.g. "primary._schemas"

MirrorSourceConnector should periodically sync the topic config (including "cleanup.policy") from source to target (https://github.com/apache/kafka/blob/trunk/connect/mirror/src/main/java/org/apache/kafka/connect/mirror/MirrorSourceConnector.java#L122) so the "_schemas" topic on target cluster should be compacted topic.

To debug, 
check if  "_schemas" topic on target cluster is *indeed* compacted topic, especially at the moment when you see the above exception.


> MirrorMaker 2.0 does not replicates topic's "clean.policy"
> ----------------------------------------------------------
>
>                 Key: KAFKA-10424
>                 URL: https://issues.apache.org/jira/browse/KAFKA-10424
>             Project: Kafka
>          Issue Type: Bug
>          Components: mirrormaker
>    Affects Versions: 2.5.0
>            Reporter: Mikhail Grinfeld
>            Priority: Major
>
> I needed to replicate schema-registry "_schemas" topic. 
> data was replicated successfully and everything looked good, but new schema-registry started with warning that replicated topic's cleanup.policy is not "compact"



--
This message was sent by Atlassian Jira
(v8.3.4#803005)