v24.1.0-rc.1 release notes (#18524)

* v24.1.0-rc.1 release notes

---------

Co-authored-by: Matt Linville <[email protected]>

src/current/_data/releases.yml

@@ -6028,3 +6028,30 @@
     CockroachDB Cloud clusters. To request to upgrade
     a CockroachDB self-hosted cluster to this version,
     [contact support](https://support.cockroachlabs.com/hc/en-us/requests/new).
+
+- release_name: v24.1.0-rc.1
+  major_version: v24.1
+  release_date: '2024-05-08'
+  release_type: Testing
+  go_version: go1.22.0
+  sha: 6205244e922606f85761dad2137b842f43a53716
+  has_sql_only: true
+  has_sha256sum: true
+  mac:
+    mac_arm: true
+    mac_arm_experimental: true
+    mac_arm_limited_access: true
+  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-unstable
+    docker_arm: true
+    docker_arm_experimental: false
+    docker_arm_limited_access: false
+  source: true
+  previous_release: v24.1.0-beta.3

src/current/_includes/releases/v24.1/v24.1.0-rc.1.md

@@ -0,0 +1,55 @@
+## v24.1.0-rc.1
+
+Release Date: May 8, 2024
+
+{% include releases/new-release-downloads-docker-image.md release=include.release %}
+
+<h3 id="v24-1-0-rc-1-sql-language-changes">SQL language changes</h3>
+
+- Added a new [session setting]({% link v24.1/session-variables.md %}) `optimizer_use_improved_multi_column_selectivity_estimate`, which if enabled, causes the [optimizer]({% link v24.1/cost-based-optimizer.md %}) to use an improved selectivity estimate for multi-column predicates. This setting will default to `true` on v24.2 and later, and `false` on earlier versions. [#123106][#123106]
+
+<h3 id="v24-1-0-rc-1-operational-changes">Operational changes</h3>
+
+- Added two new [metrics]({% link v24.1/metrics.md %}): `range.snapshots.upreplication.rcvd-bytes` counts the number of [Raft]({% link v24.1/architecture/replication-layer.md %}#raft) recovery snapshot bytes received, and `range.snapshots.upreplication.sent-bytes` counts the number of Raft recovery snapshot bytes sent. Also updated `range.snapshots.recovery.rcvd-bytes` and `range.snapshots.recovery.sent-bytes` to only include Raft snapshots. A new line was added to the [**Snapshot Data Received**]({% link v24.1/ui-replication-dashboard.md %}#snapshot-data-received) graph. [#123055][#123055]
+
+<h3 id="v24-1-0-rc-1-db-console-changes">DB Console changes</h3>
+
+- Added a **Replication Lag** graph to the [**Physical Cluster Replication**]({% link v24.1/physical-cluster-replication-monitoring.md %}) dashboard to measure replication lag between primary and standby clusters using [physical cluster replication]({% link v24.1/physical-cluster-replication-overview.md %}). [#123285][#123285]
+
+<h3 id="v24-1-0-rc-1-bug-fixes">Bug fixes</h3>
+
+- Fixed a bug that caused the [**Tables**]({% link v24.1/ui-databases-page.md %}#tables-view) and [**Table Details**]({% link v24.1/ui-databases-page.md %}#table-details) pages in the DB Console to display an incorrect value for **Table Stats Last Updated**. [#122816][#122816]
+- Fixed a bug in the DB Console's [**Custom Chart**]({% link v24.1/ui-custom-chart-debug-page.md %}) tool where store-level metrics were displayed only for the first store ID associated with the node. Now data is displayed for all stores present on a node, and a single time series is shown for each store, rather than an aggregated value for all of the node's stores. This allows finer-grained monitoring of store-level metrics. [#122705][#122705]
+- Fixed a bug introduced in v22.2 that could cause the internal error `attempting to append refresh spans after the tracked timestamp has moved forward` in some edge cases.  [#123136][#123136]
+- Fixed a bug where a `TYPEDESC SCHEMA CHANGE` job could retry forever if the descriptor it targeted was already dropped. [#123273][#123273]
+- Fixed a bug where, if the legacy schema changer was enabled, the [`CREATE SEQUENCE`]({% link v24.1/create-sequence.md %}) command would incorrectly require the user to have the `CREATE` [privilege]({% link v24.1/security-reference/authorization.md %}#privileges) on the parent database rather than only on the parent schema.[#123289][#123289]
+- Fixed a bug where a [job]({% link v24.1/show-jobs.md %}) would fail if it reported an out-of-bound progress fraction. The error is now logged and no longer causes the job to fail. [#122965][#122965]
+
+<h3 id="v24-1-0-rc-1-performance-improvements">Performance improvements</h3>
+
+- Added a new [session setting]({% link v24.1/session-variables.md %}) `optimizer_use_improved_zigzag_join_costing`. When enabled and when the [cluster setting]({% link v24.1/cluster-settings.md %}) `enable_zigzag_join` is also enabled, the cost of zigzag joins is updated such that a zigzag join will be chosen over a scan only if it produces fewer rows than a scan.[#123106][#123106]
+- Improved the selectivity estimation of multi-column filters when the multi-column distinct count is high. This prevents the [optimizer]({% link v24.1/cost-based-optimizer.md %}) from choosing a bad query plan due to over-estimating the selectivity of a multi-column predicate. [#123106][#123106]
+- Improved the efficiency of error handling in the [vectorized execution engine]({% link v24.1/vectorized-execution.md %}), to reduce the CPU overhead of statement timeout handling and reduce the potential for more statement timeouts. [#123501][#123501]
+- Disabled a poorly-performing [changefeed]({% link v24.1/change-data-capture-overview.md %}) optimization that was intended to reduce duplicates during aggregator restarts. [#123597][#123597]
+
+<div class="release-note-contributors" markdown="1">
+
+<h3 id="v24-1-0-rc-1-contributors">Contributors</h3>
+
+This release includes 57 merged PRs by 24 authors.
+
+</div>
+
+[#122705]: https://github.com/cockroachdb/cockroach/pull/122705
+[#122816]: https://github.com/cockroachdb/cockroach/pull/122816
+[#122965]: https://github.com/cockroachdb/cockroach/pull/122965
+[#123055]: https://github.com/cockroachdb/cockroach/pull/123055
+[#123106]: https://github.com/cockroachdb/cockroach/pull/123106
+[#123136]: https://github.com/cockroachdb/cockroach/pull/123136
+[#123144]: https://github.com/cockroachdb/cockroach/pull/123144
+[#123273]: https://github.com/cockroachdb/cockroach/pull/123273
+[#123285]: https://github.com/cockroachdb/cockroach/pull/123285
+[#123289]: https://github.com/cockroachdb/cockroach/pull/123289
+[#123373]: https://github.com/cockroachdb/cockroach/pull/123373
+[#123501]: https://github.com/cockroachdb/cockroach/pull/123501
+[#123597]: https://github.com/cockroachdb/cockroach/pull/123597

src/current/cockroachcloud/upgrade-to-v24.1.md

@@ -6,7 +6,7 @@ docs_area: manage
 page_version: v24.1
 prev_version: v23.2
 pre_production_preview: true
-pre_production_preview_version: v24.1.0-beta.1
+pre_production_preview_version: v24.1.0-rc.1
 ---
 
 {% if page.pre_production_preview == true %}