redpanda-data/redpanda v26.1.13 on GitHub

Bug Fixes

Fix consumer group lag metrics reporting 0 for read-replica topics. by @bartoszpiekny-redpanda in #30939
Fixed a cluster membership lock that could occur when a node was decommissioned while it was being added as a controller (raft0) learner. by @mmaslankaprv in #31091
Fixed a potential broker crash (use-after-free) in the cloud topics metastore when accessing Raft state during leadership changes. by @nvartolomei in #31052
Fixes a bug in cloud topics compaction that could cause repeated no-op compactions if the topic uses retention or transactions. by @andrwng in #31124
Fixes a bug where Cloud Topics with the compact cleanup policy would have log retention policies applied to them. by @andrwng in #31111
Fixes an issue where cluster linking would not replicate the partition start offset. by @andrwng in #31000
rpk ai no longer requires a selected Redpanda Cloud cluster to run. The AI CLI uses its own rpk ai auth login and rpk ai env use, independent of any rpk cloud session. by @birdayz in #31079
fix a latent double get_exception call on a failed future in cloud topics metastore by @oleiman in #31045

Adds a new enable_development_metrics cluster configuration (false by default, runtime configurable). When enabled, internal_rpc_latency metrics are exposed to the internal /metrics endpoint. This family of metrics can be expensive (large number of series) - leave it set to false to save on metrics scraping costs. by @WillemKauf in #30957
Fixes a bug where unnecessary memory allocations/deallocations were being made on the L0 write path in cloud topics by @WillemKauf in #30983
Iceberg Topics will stop creating new parquet files if there is a large backlog of files not yet committed to the Iceberg catalog. This helps avoid an OOM when the catalog has rejected Redpanda commits for prolonged periods of time. by @andrwng in #31036
Optimize the ACL authorization path for all callers (Kafka handlers, schema registry, Pandaproxy & Iceberg) by @WillemKauf in #30969
Prevent oversized allocations/OOMs when using a large number of ACLs in redpanda by @WillemKauf in #30969
The Iceberg Topics Coordinator will now commit to the Iceberg catalog in chunks, avoiding an OOM when the catalog has rejected Redpanda commits for prolonged periods of time. by @andrwng in #31036

Full Changelog: v26.1.12...v26.1.13