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From "Ismael Juma (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (KAFKA-6146) minimize the number of triggers enqueuing PreferredReplicaLeaderElection events
Date Thu, 09 Nov 2017 01:09:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-6146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ismael Juma resolved KAFKA-6146.
--------------------------------
    Resolution: Fixed

> minimize the number of triggers enqueuing PreferredReplicaLeaderElection events
> -------------------------------------------------------------------------------
>
>                 Key: KAFKA-6146
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6146
>             Project: Kafka
>          Issue Type: Sub-task
>    Affects Versions: 1.1.0
>            Reporter: Jun Rao
>            Assignee: Onur Karaman
>             Fix For: 1.1.0
>
>
> We currently enqueue a PreferredReplicaLeaderElection controller event in PreferredReplicaElectionHandler's
handleCreation, handleDeletion, and handleDataChange. We can just enqueue the event upon znode
creation and after preferred replica leader election completes. The processing of this latter
enqueue will register the exist watch on PreferredReplicaElectionZNode and perform any pending
preferred replica leader election that may have occurred between completion and registration.



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