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https://issues.apache.org/jira/browse/KAFKA-16294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongnuo Lyu updated KAFKA-16294:
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Description:
The offline upgrade is triggered when a consumer group heartbeat request is
received in a classic group. The downgrade is triggered when any old protocol
request is received in a consumer group. We only accept upgrade/downgrade if 1)
the group migration config is enabled 2) the group is empty.
This is the first part of the implementation of offline group protocol
migration, adding the kafka config group protocol migration. The config has
four valid values – both(both upgrade and downgrade are allowed), upgrade(only
upgrade is allowed), downgrade(only downgrade is allowed) and none(neither is
allowed.).
> Add group protocol migration enabling config
> --------------------------------------------
>
> Key: KAFKA-16294
> URL: https://issues.apache.org/jira/browse/KAFKA-16294
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Dongnuo Lyu
> Assignee: Dongnuo Lyu
> Priority: Major
>
> The offline upgrade is triggered when a consumer group heartbeat request is
> received in a classic group. The downgrade is triggered when any old protocol
> request is received in a consumer group. We only accept upgrade/downgrade if
> 1) the group migration config is enabled 2) the group is empty.
> This is the first part of the implementation of offline group protocol
> migration, adding the kafka config group protocol migration. The config has
> four valid values – both(both upgrade and downgrade are allowed),
> upgrade(only upgrade is allowed), downgrade(only downgrade is allowed) and
> none(neither is allowed.).
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