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https://issues.apache.org/jira/browse/KAFKA-12265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Gustafson resolved KAFKA-12265.
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Resolution: Fixed
> Move the BatchAccumulator in KafkaRaftClient to LeaderState
> -----------------------------------------------------------
>
> Key: KAFKA-12265
> URL: https://issues.apache.org/jira/browse/KAFKA-12265
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Jose Armando Garcia Sancio
> Assignee: Ryan Dielhenn
> Priority: Major
>
> The {{KafkaRaftClient}} has a field for the {{BatchAccumulator}} that is only
> used and set when it is the leader. In other cases, leader specific
> information was stored in {{LeaderState}}. In a recent change {{EpochState}},
> which {{LeaderState}} implements, was changed to be a {{Closable}}.
> {{QuorumState}} makes sure to always close the previous state before
> transitioning to the next state. We can use this redesign to move the
> {{BatchAccumulator}} to the {{LeaderState}} and simplify some of the handling
> in {{KafkaRaftClient}}.
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