Release Notes for v26.1-v26.1.1

src/current/_data/releases.yml

@@ -10671,3 +10671,38 @@
     docker_arm_limited_access: false
   source: true
   previous_release: v24.3.27
+
+
+- release_name: v26.1.1
+  major_version: v26.1
+  release_date: '2026-03-09'
+  release_type: Production
+  go_version: go1.25.5
+  sha: 5abbbd24fcc2c7873fb0f985ccea68b7abaa6afe
+  has_sql_only: true
+  has_sha256sum: true
+  mac:
+    mac_arm: true
+    mac_arm_experimental: true
+    mac_arm_limited_access: false
+  windows: true
+  linux:
+    linux_arm: true
+    linux_arm_experimental: false
+    linux_arm_limited_access: false
+    linux_intel_fips: true
+    linux_arm_fips: false
+  docker:
+    docker_image: cockroachdb/cockroach
+    docker_arm: true
+    docker_arm_experimental: false
+    docker_arm_limited_access: false
+  source: true
+  previous_release: v26.1.0
+  cloud_only: true
+  cloud_only_message_short: 'Available only for select CockroachDB Cloud clusters'
+  cloud_only_message: >
+      This version is currently available only for select
+      CockroachDB Cloud clusters. To request to upgrade
+      a CockroachDB self-hosted cluster to this version,
+      [contact support](https://support.cockroachlabs.com/hc/requests/new).

src/current/_includes/releases/v26.1/v26.1.1.md

@@ -0,0 +1,47 @@
+## v26.1.1
+
+Release Date: March 9, 2026
+
+{% include releases/new-release-downloads-docker-image.md release=include.release %}
+
+<h3 id="v26-1-1-general-changes">General changes</h3>
+
+- Added support for the `partition_alg` changefeed option to specify a Kafka partitioning algorithm. Supported values are `fnv-1a` (default) and `murmur2`. For example: `CREATE CHANGEFEED ... INTO 'kafka://...' WITH partition_alg='murmur2';`. This option is only valid for Kafka v2 sinks and is controlled by the cluster setting `changefeed.partition_alg.enabled`. Once a changefeed is created with a specific algorithm, it continues to use that algorithm even if the cluster setting is later disabled, unless the changefeed is altered to use a different `partition_alg` value. [#161532][#161532]
+
+<h3 id="v26-1-1-sql-language-changes">SQL language changes</h3>
+
+- The `information_schema.crdb_datums_to_bytes` built-in function is now documented. [#161196][#161196]
+
+<h3 id="v26-1-1-bug-fixes">Bug fixes</h3>
+
+- Fixed a bug where AVRO file imports of data with JSON or binary records could hang indefinitely when encountering stream errors from cloud storage (such as `HTTP/2` `CANCEL` errors). Import jobs will now properly fail with an error instead of hanging. [#161446][#161446]
+- Fixed a bug which prevented successfully injecting hints using `information_schema.crdb_rewrite_inline_hints` for `INSERT`, `UPSERT`, `UPDATE`, and `DELETE` statements. This bug was present since hint injection was first introduced in v26.1.0. [#161970][#161970]
+- Fixed a bug introduced in v26.1.0-beta.1 in which row-level TTL jobs could encounter GC threshold errors if each node had a large number of spans to process. [#161990][#161990]
+- Fixed a bug where multi-statement explicit transactions that use `SAVEPOINT` to recover from certain errors (like duplicate key value violations) could lose writes performed before the savepoint was created in rare cases when buffered writes were enabled. Buffered writes are a public preview feature that is off by default. This bug was introduced in v25.2. [#162031][#162031]
+- Fixed a bug that could cause changefeeds using Kafka v1 sinks to hang when the changefeed was cancelled. [#162121][#162121]
+- Fixed a bug where queries using a generic plan with a lookup join on an index containing identity computed columns would fail with the error "cannot map variable %d to an indexed var". [#162140][#162140]
+- Fixed an internal error "could not find format code for column N" that occurred when executing `EXPLAIN ANALYZE EXECUTE` statements via JDBC or other clients using the PostgreSQL binary protocol. [#162284][#162284]
+- Fixed a bug where CockroachDB would encounter an internal error when evaluating builtin functions with `'{}'` as an argument without explicit type casts (e.g., `SELECT cardinality('{}');`). A regular error is now returned instead, matching PostgreSQL behavior. [#162358][#162358]
+- Fixed a bug in which PL/pgSQL UDFs with many IF statements would cause a timeout and/or OOM when executed from a prepared statement. This bug was introduced in versions v23.2.22, v24.1.15, v24.3.9, v25.1.2, and v25.2.0. [#162560][#162560]
+- Fixed a bug where generating a debug zip could trigger an out-of-memory (OOM) condition on a node if malformed log entries were present in logs using `json` or `json-compact` formatting. This bug was introduced in v24.1. [#163353][#163353]
+- Fixed a rare data race during parallel constraint checks where a fresh descriptor collection could resolve a stale enum type version. This bug was introduced in v26.1.0. [#163961][#163961]
+
+<h3 id="v26-1-1-performance-improvements">Performance improvements</h3>
+
+- Improved changefeed checkpointing performance when changefeeds are lagging. Previously, checkpoint updates could be redundantly applied multiple times per checkpoint operation. [#163283][#163283]
+
+
+[#161970]: https://github.com/cockroachdb/cockroach/pull/161970
+[#162140]: https://github.com/cockroachdb/cockroach/pull/162140
+[#162358]: https://github.com/cockroachdb/cockroach/pull/162358
+[#163353]: https://github.com/cockroachdb/cockroach/pull/163353
+[#161446]: https://github.com/cockroachdb/cockroach/pull/161446
+[#162031]: https://github.com/cockroachdb/cockroach/pull/162031
+[#162121]: https://github.com/cockroachdb/cockroach/pull/162121
+[#162284]: https://github.com/cockroachdb/cockroach/pull/162284
+[#163961]: https://github.com/cockroachdb/cockroach/pull/163961
+[#161532]: https://github.com/cockroachdb/cockroach/pull/161532
+[#161990]: https://github.com/cockroachdb/cockroach/pull/161990
+[#162560]: https://github.com/cockroachdb/cockroach/pull/162560
+[#163283]: https://github.com/cockroachdb/cockroach/pull/163283
+[#161196]: https://github.com/cockroachdb/cockroach/pull/161196