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https://issues.apache.org/jira/browse/KAFKA-10460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17199494#comment-17199494
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Ankit Kumar commented on KAFKA-10460:
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Hey [~robinp-tw],
Are you working on this? If not, I will be happy to pick it up.
> ReplicaListValidator format checking is incomplete
> --------------------------------------------------
>
> Key: KAFKA-10460
> URL: https://issues.apache.org/jira/browse/KAFKA-10460
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 2.4.1
> Reporter: Robin Palotai
> Priority: Minor
>
> See
> [https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/server/ConfigHandler.scala#L220]
> . The logic is supposed to accept only two cases:
> * list of k:v pairs
> * a single '*'
> But in practice, since the disjunction's second part only checks that the
> head is '*', the case where a k:v list is headed by a star is also accepted
> (and then later broker dies at startup, refusing the value).
> This practically happened due to a CruiseControl bug (see
> [https://github.com/linkedin/cruise-control/issues/1322])
> Observed on 2.4, but seems to be present in HEAD's source as well.
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