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https://issues.apache.org/jira/browse/KAFKA-7313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dong Lin resolved KAFKA-7313.
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Resolution: Fixed
> StopReplicaRequest should attempt to remove future replica for the partition
> only if future replica exists
> ----------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-7313
> URL: https://issues.apache.org/jira/browse/KAFKA-7313
> Project: Kafka
> Issue Type: Improvement
> Reporter: Dong Lin
> Assignee: Dong Lin
> Priority: Major
> Fix For: 2.0.1, 2.1.0
>
>
> This patch fixes two issues:
> 1) Currently if a broker received StopReplicaRequest with delete=true for the
> same offline replica, the first StopRelicaRequest will show
> KafkaStorageException and the second StopRelicaRequest will show
> ReplicaNotAvailableException. This is because the first StopRelicaRequest
> will remove the mapping (tp -> ReplicaManager.OfflinePartition) from
> ReplicaManager.allPartitions before returning KafkaStorageException, thus the
> second StopRelicaRequest will not find this partition as offline.
> This result appears to be inconsistent. And since the replica is already
> offline and broker will not be able to delete file for this replica, the
> StopReplicaRequest should fail without making any change and broker should
> still remember that this replica is offline.
> 2) Currently if broker receives StopReplicaRequest with delete=true, the
> broker will attempt to remove future replica for the partition, which will
> cause KafkaStorageException in the StopReplicaResponse if this replica does
> not have future replica. It is problematic to always return
> KafkaStorageException in the response if future replica does not exist.
>
>
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