dolt 1.52.2

[BrewTestBot]

Created by brew bump

---

Created with brew bump-formula-pr.

Details

release notes

# Merged PRs
dolt

9144: Bug fix: allow dropping tables with FK constraints

Fixes: Dolt merge fails when schema change drops multiple referenced tables dolthub/dolt#9014
9141: Add a smoke test for server-side cursor support

Adds smoke test coverage for server-side cursor support. Motivated by the customer issue linked below with corrupted results from SHOW COLLATION; while using DBVisualizer when a server-side cursor is in use.

A run without the fix from GMS shows how this new test fails when the bug from the customer is triggered.

Depends on: Only release buffer when a server-side cursor is not in use dolthub/go-mysql-server#2952

Related to: Errors serializing data when cursors are in use dolthub/dolt#9125
9135: go/store/nbs: conjoiner.go,store.go: Make conjoin asynchronous.
9106: Stats NBS gc safety

This PR modifies doGC to stop statistics before running, and restart statistics afterwards. An earlier version of this PR threaded cancellations through the session management interface, but that created headaches for invalidating looping stats sessions.

For more background, stats jobs were previously partitioned into sections that allow GC to finalize before stats finishes. The nature of this partitioning creates a dependency chain between reading the histogram chunk level of an index, and jobs that read those individual chunk subtrees. The problem is that those jobs create a read-dependency that is broken when GC deletes chunks. The nature of the partitioning means the only way to avoid the interruption is to (1) stall GC for a longer period of time, (2) check chunk integrity before every subcommands, or (3) invalidate the stats session.

Additionally, this fixes the long flush issue where queries would stall on writing up to 65k stats rows to disk. We limit pending stats changes to 64, which upper bounds the cost of any single flush in a way that meshes with current rate-limiting methodology.
9046: [dfunctions] dolt_join_cost prints full join memo

gms side: [no-release-notes] track join memos for external use dolthub/go-mysql-server#2917
tmp2/test-branch*> select dolt_join_cost('select * from uv, xy where u = x') as cost;
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| cost                                                                                                                                                                      |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| memo:                                                                                                                                                                     |
| ├── G1: (tablescan: uv 0.0)*                                                                                                                                              |
| ├── G2: (tablescan: xy 0.0)*                                                                                                                                              |
| └── G3: (hashjoin 1 2 8.0) (hashjoin 2 1 8.0) (mergejoin 1 2 4.1) (mergejoin 2 1 4.1) (lookupjoin 1 2 6.6) (lookupjoin 2 1 6.6) (innerjoin 2 1 5.0)* (innerjoin 1 2 5.0)* |
|                                                                                                                                                                           |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+


go-mysql-server

2952: Only release buffer when a server-side cursor is not in use

We added an optimization to release a row's memory after sending it over the channel, but for a server-side cursor, there is another layer of spooling involved, so it's not safe to release the row memory yet. This changes that optimization to only release the row's memory when we are not using a server-side cursor.

Testing this server-side cursor behavior requires a little extra work. go-sql-driver/mysql does not support server-side cursors, so we can't test this directly in our Go code. I've opened Add a smoke test for server-side cursor support dolthub/dolt#9141 with changes to our Java MySQL Connector/J integration tests to add some simple smoke tests for server-side cursors that triggers the same behavior as the customer reported issue below.

Fixes: Errors serializing data when cursors are in use dolthub/dolt#9125
2951: update mysql version

fixes: Update MySQL version to 8.0.31 so that Django recognizes support for INTERSECT and EXCEPT? dolthub/go-mysql-server#2950

vitess

413: Add support for RETURNING to UPDATE and INSERT nodes
412: allow trim, cast, and position as nonkeywords

This PR adds makes it so that TRIM, CAST and POSITION are usable as table and column names without backquotes.

fixes: BUG: Dolt treats position as a reserved keyword dolthub/dolt#9123

Closed Issues

9125: Errors serializing data when cursors are in use
9014: Dolt merge fails when schema change drops multiple referenced tables
9133: coalesce() unescaping json with new lines
2950: Update MySQL version to 8.0.31 so that Django recognizes support for INTERSECT and EXCEPT?

---

[github-actions]

🤖 An automated task has requested bottles to be published to this PR.

Please do not push to this PR branch before the bottle commits have been pushed, as this results in a state that is difficult to recover from. If you need to resolve a merge conflict, please use a merge commit. Do not force-push to this PR branch.