[jira] [Resolved] (KAFKA-12265) Move the BatchAccumulator in KafkaRaftClient to LeaderState

["Jason Gustafson (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-12265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Gustafson resolved KAFKA-12265.
-------------------------------------
    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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