[jira] [Resolved] (KAFKA-19893) Reduce tiered storage redundancy with delayed upload

["Kamal Chandraprakash (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-19893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kamal Chandraprakash resolved KAFKA-19893.
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    Fix Version/s: 4.3.0
       Resolution: Fixed

> Reduce tiered storage redundancy with delayed upload
> ----------------------------------------------------
>
>                 Key: KAFKA-19893
>                 URL: https://issues.apache.org/jira/browse/KAFKA-19893
>             Project: Kafka
>          Issue Type: Improvement
>          Components: Tiered-Storage
>            Reporter: fujian
>            Assignee: fujian
>            Priority: Major
>             Fix For: 4.3.0
>
>         Attachments: image-2025-11-18-19-19-27-579.png
>
>
> Currently, Kafka uploads all non-active local log segments to remote storage even when they are still within the local retention period, resulting in redundant storage of the same data in both tiers. This wastes storage capacity and network bandwidth without providing immediate benefits, since reads during the retention window prioritize local data.
> However, some users rely on remote storage for real-time analytics and need the latest data to be available as soon as possible. Therefore, this optimization is offered as an optional configuration rather than the default behavior.
> !image-2025-11-18-19-19-27-579.png!
>  



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