[jira] [Updated] (KAFKA-14365) Extract common logic from Fetcher into FetcherUtils

["Kirk True (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-14365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirk True updated KAFKA-14365:
------------------------------
    Summary: Extract common logic from Fetcher into FetcherUtils  (was: Refactor Fetcher to allow different implementations)

> Extract common logic from Fetcher into FetcherUtils
> ---------------------------------------------------
>
>                 Key: KAFKA-14365
>                 URL: https://issues.apache.org/jira/browse/KAFKA-14365
>             Project: Kafka
>          Issue Type: Improvement
>          Components: clients, consumer
>            Reporter: Kirk True
>            Assignee: Kirk True
>            Priority: Minor
>
> The `Fetcher` API is used internally by the `KafkaConsumer` to fetch records from the brokers. There is ongoing work to create a new consumer implementation with a significantly refactored threading model. The threading refactor work requires a similarly refactored `Fetcher`. In order to keep the existing `KafkaConsumer` as untouched as possible, this Jira proposes to refactor the `Fetcher` so as to allow other implementations to use the unit tests and `KafkaConsumer`.
> Here are the proposed steps:
>  # Extract out the common APIs used by the `KafkaConsumer` and related unit tests into a new Java interface named `Fetcher`
>  # Rename the existing `Fetcher` as `KafkaFetcher` (or similar)
>  # Refactor the `KafkaConsumer`, `FetcherTest`, and other call sites to primarily use the new `Fetcher` interface
> A future pull request will add the new `Fetcher` implementation and tie it in to the existing `FetcherTest` tests.



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