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https://issues.apache.org/jira/browse/KAFKA-2965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15047855#comment-15047855
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Bo Wang commented on KAFKA-2965:
--------------------------------

According to the code, I think the name of the two variable needs to be 
exchanged.

> Two variables should be exchanged.
> ----------------------------------
>
>                 Key: KAFKA-2965
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2965
>             Project: Kafka
>          Issue Type: Bug
>          Components: controller
>    Affects Versions: 0.9.0.0
>         Environment: NA
>            Reporter: Bo Wang
>            Assignee: Neha Narkhede
>            Priority: Minor
>             Fix For: 0.9.1.0
>
>
> Two variables should be exchanged in KafkaController.scala as follows:
> val topicsForWhichPartitionReassignmentIsInProgress = 
> controllerContext.partitionsUndergoingPreferredReplicaElection.map(_.topic)
> val topicsForWhichPreferredReplicaElectionIsInProgress = 
> controllerContext.partitionsBeingReassigned.keySet.map(_.topic)
> val topicsIneligibleForDeletion = topicsWithReplicasOnDeadBrokers | 
> topicsForWhichPartitionReassignmentIsInProgress |
>                                   
> topicsForWhichPreferredReplicaElectionIsInProgress
> Should change to:
> val topicsForWhichPreferredReplicaElectionIsInProgress = 
> controllerContext.partitionsUndergoingPreferredReplicaElection.map(_.topic)
> val topicsForWhichPartitionReassignmentIsInProgress = 
> controllerContext.partitionsBeingReassigned.keySet.map(_.topic)
>     val topicsIneligibleForDeletion = topicsWithReplicasOnDeadBrokers | 
> topicsForWhichPartitionReassignmentIsInProgress |
>                                   
> topicsForWhichPreferredReplicaElectionIsInProgress



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