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https://issues.apache.org/jira/browse/KAFKA-10175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vikas Singh updated KAFKA-10175:
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Description:
This line in the code always returns null:
[[MetadataCache|https://github.com/apache/kafka/blob/2.6/core/src/main/scala/kafka/server/MetadataCache.scala#L272]::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.
was:
This line in the code always returns null:
> 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.
> MetadataCache::getCluster 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|https://github.com/apache/kafka/blob/2.6/core/src/main/scala/kafka/server/MetadataCache.scala#L272]::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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