v25.3.11

[tyson-redpanda]

Bug Fixes

• Fixed shadow link replicating all historical data when start_at_timestamp is set to a timestamp beyond the end of the source partition log. The link now falls back to the last stable offset and replicates only new data. by @nguyen-andrew in #29900
• Fixes a possible cause of offset translator inconsistency arising from incorrect truncation of the log. by @bharathv in #29872
• Repair tiered-storage manifests with misaligned archive offsets during archiver startup. This unblocks retention when such a manifest was present. by @nvartolomei in #29921
• Upgrade libxml2 to v2.15.2 to fix CVE-2026-0990 (Uncontrolled
  Recursion via xmlCatalogXMLResolveURI() in XML catalog processing). by @tyson-redpanda in #29811
• fix dangling reference in many partitions edge case by @joe-redpanda in #29932
• Fix name prefix in Kafka client ID by @bharathv in [[v25.3.x] shadowing: fix name prefix in Kafka client ID #29784]
• Prevent use-after-modification in disk_log_impl::disk_usage() by @WillemKauf in [[v25.3.x] [CORE-15884] storage: Prevent use-after-modification in disk_log_impl::disk_usage() #29897]
• Fix iobuf hash by @StephanDollberg in [[v25.3.x] bytes: Fix iobuf hash #29915]

Improvements

• Archive garbage collection now deletes segments in bounded batches (controlled by cloud_storage_gc_max_segments_per_run, default 300) instead of attempting to delete the entire backlog in a single housekeeping run. This prevents unbounded object storage delete requests on partitions with large expired archives, ensures each run commits incremental progress, and automatically schedules fast follow-up runs until the backlog is fully drained. by @nvartolomei in #29923
• Remove a copy of a potentially large datastructure when starting a transaction by @rockwotj in #29836
• #29855 Minor improvement to speed up feature activation after major version upgrades. by @pgellert in #29880
• Replace circular buffer with chunked equivalent by @IoannisRP in [[v25.3.x] [CORE-15501] kafka/client: replace circular buffer with chunked equivalent #29579]
• Add reset topic state escape hatch by @nvartolomei in [[v25.3.x] datalake/coordinator: add reset topic state escape hatch #29759]
• Deterministic shadow link status output by @bharathv in [[v25.3.x] shadowing/status: deterministic shadow link status output #29912]

Full Changelog: v25.3.10...v25.3.11

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This discussion was created from the release v25.3.11.