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Posted to jira@kafka.apache.org by "Sagar Rao (Jira)" <ji...@apache.org> on 2020/10/28 16:08:00 UTC
[jira] [Assigned] (KAFKA-10634) LeaderChangeMessage should include
the leader as one of the voters
[ https://issues.apache.org/jira/browse/KAFKA-10634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sagar Rao reassigned KAFKA-10634:
---------------------------------
Assignee: Sagar Rao
> LeaderChangeMessage should include the leader as one of the voters
> ------------------------------------------------------------------
>
> Key: KAFKA-10634
> URL: https://issues.apache.org/jira/browse/KAFKA-10634
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Jose Armando Garcia Sancio
> Assignee: Sagar Rao
> Priority: Minor
>
> When a leader is elect the leader writes a `LeaderChangeMessage` to the replicated log. This message is defined in KIP-595 as:
> ```
> {{{}}
> {{ }}{{"type"}}{{: }}{{"data"}}{{,}}
> {{ }}{{"name"}}{{: }}{{"LeaderChangeMessage"}}{{,}}
> {{ }}{{"validVersions"}}{{: }}{{"0"}}{{,}}
> {{ }}{{"flexibleVersions"}}{{: }}{{"0+"}}{{,}}
> {{ }}{{"fields"}}{{: [}}
> {{ }}{{{}}{{"name"}}{{: }}{{"LeaderId"}}{{, }}{{"type"}}{{: }}{{"int32"}}{{, }}{{"versions"}}{{: }}{{"0+"}}{{,}}
> {{ }}{{"about"}}{{: }}{{"The ID of the newly elected leader"}}{{},}}
> {{ }}{{{}}{{"name"}}{{: }}{{"VotedIds"}}{{, }}{{"type"}}{{: }}{{"[]int32"}}{{, }}{{"versions"}}{{: }}{{"0+"}}{{,}}
> {{ }}{{"about"}}{{: }}{{"The IDs of the voters who voted for the current leader"}}{{},}}
>
> {{ }}{{]}}
> {{}}}
> ```
> The current implementation doesn't include the LeaderId in the set of VoterIds. In the protocol it is guarantee that the leader must have voted for itself.
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