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https://issues.apache.org/jira/browse/KAFKA-10175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17143453#comment-17143453
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Chia-Ping Tsai commented on KAFKA-10175:
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just curious, does it cause exception on production?
> MetadataCache::getClusterMetadata returns null for offline replicas
> -------------------------------------------------------------------
>
> Key: KAFKA-10175
> URL: https://issues.apache.org/jira/browse/KAFKA-10175
> Project: Kafka
> Issue Type: Bug
> Reporter: Vikas Singh
> Priority: Major
>
> This line in the code always returns null:
> [MetadataCache::getClusterMetadata|https://github.com/apache/kafka/blob/2.6/core/src/main/scala/kafka/server/MetadataCache.scala#L272]
> The reason is that the `map(node)` part uses `aliveNodes` to create `Node`
> object otherwise default to `null`. Offline replicas thus end up always as
> null.
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