-
Notifications
You must be signed in to change notification settings - Fork 2.1k
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Do not load table stats when booting vttablet
.
#15715
Conversation
Review ChecklistHello reviewers! 👋 Please follow this checklist when reviewing this Pull Request. General
Tests
Documentation
New flags
If a workflow is added or modified:
Backward compatibility
|
Unit Tests are failing, those need to be fixed as the test expectation about the query have changed. |
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #15715 +/- ##
==========================================
+ Coverage 68.24% 68.25% +0.01%
==========================================
Files 1543 1543
Lines 197577 197586 +9
==========================================
+ Hits 134833 134863 +30
+ Misses 62744 62723 -21 ☔ View full report in Codecov by Sentry. |
This PR is being marked as stale because it has been open for 30 days with no activity. To rectify, you may do any of the following:
If no action is taken within 7 days, this PR will be closed. |
2600a0a
to
7d0f33a
Compare
I'll create an issue for this (and link to it) shortly. |
Signed-off-by: Arthur Schreiber <[email protected]>
54763ac
to
f1f2596
Compare
Signed-off-by: Arthur Schreiber <[email protected]>
Signed-off-by: Arthur Schreiber <[email protected]>
Signed-off-by: Arthur Schreiber <[email protected]>
Signed-off-by: Arthur Schreiber <[email protected]>
Signed-off-by: Arthur Schreiber <[email protected]>
Signed-off-by: Arthur Schreiber <[email protected]>
…) (#16101) Signed-off-by: Arthur Schreiber <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com>
…) (#16100) Signed-off-by: Arthur Schreiber <[email protected]> Co-authored-by: Arthur Schreiber <[email protected]>
…) (#16099) Signed-off-by: Arthur Schreiber <[email protected]> Co-authored-by: Arthur Schreiber <[email protected]>
…) (#16098) Signed-off-by: Arthur Schreiber <[email protected]> Co-authored-by: Arthur Schreiber <[email protected]>
Signed-off-by: Arthur Schreiber <[email protected]>
…thub Do not load table stats when booting `vttablet`. (vitessio#15715)
* [release-19.0] Bump to `v19.0.5-SNAPSHOT` after the `v19.0.4` release (vitessio#15889) Signed-off-by: Andres Taylor <[email protected]> * [release-19.0] fix: handle info_schema routing (vitessio#15899) (vitessio#15906) Signed-off-by: Andres Taylor <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] Update VTAdmin build script (vitessio#15839) (vitessio#15850) Signed-off-by: notfelineit <[email protected]> Signed-off-by: <> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> Co-authored-by: Frances Thai <[email protected]> * [release-19.0] Update env.sh so that is does not error when running on Mac (vitessio#15835) (vitessio#15915) Signed-off-by: bddicken <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] fix: derived table join column expression to be part of add join predicate on rewrite (vitessio#15956) (vitessio#15960) Signed-off-by: Harshit Gangal <[email protected]> Signed-off-by: Andres Taylor <[email protected]> Co-authored-by: Harshit Gangal <[email protected]> Co-authored-by: Andres Taylor <[email protected]> * [release-19.0] fix: insert on duplicate update to add list argument in the bind variables map (vitessio#15961) (vitessio#15967) Signed-off-by: Harshit Gangal <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> Co-authored-by: Harshit Gangal <[email protected]> * [release-19.0] test: Cleaner plan tests output (vitessio#15922) (vitessio#15964) Signed-off-by: Andres Taylor <[email protected]> * [release-19.0] connpool: Allow time out during shutdown (vitessio#15979) (vitessio#16003) Signed-off-by: Vicent Marti <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] fix: remove keyspace when merging subqueries (vitessio#16019) (vitessio#16027) Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] Add DCO workflow (vitessio#16052) (vitessio#16056) Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] Upgrade the Golang version to `go1.22.4` (vitessio#16061) Signed-off-by: GitHub <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: frouioui <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> * [release-19.0] Remove DCO workaround (vitessio#16087) (vitessio#16091) Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] Do not load table stats when booting `vttablet`. (vitessio#15715) (vitessio#16100) Signed-off-by: Arthur Schreiber <[email protected]> Co-authored-by: Arthur Schreiber <[email protected]> * [release-19.0] Add timeout to all the contexts used for RPC calls in vtorc (vitessio#15991) (vitessio#16103) Signed-off-by: Manan Gupta <[email protected]> * [release-19.0] Update braces package (vitessio#16115) (vitessio#16118) Signed-off-by: Frances Thai <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] fix: order by subquery planning (vitessio#16049) (vitessio#16132) Co-authored-by: Harshit Gangal <[email protected]> Co-authored-by: Andres Taylor <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> * [release-19.0] Fix `vtexplain` not handling `UNION` queries with `weight_string` results correctly. (vitessio#16129) (vitessio#16157) Signed-off-by: Arthur Schreiber <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> Co-authored-by: Arthur Schreiber <[email protected]> * Run more test on release-19 branch (vitessio#16152) Signed-off-by: Harshit Gangal <[email protected]> * [release-19.0] Fix flakiness in `vtexplain` unit test case. (vitessio#16159) (vitessio#16167) Signed-off-by: Arthur Schreiber <[email protected]> Co-authored-by: Arthur Schreiber <[email protected]> * [release-19.0] Online DDL shadow table: rename referenced table name in self referencing FK (vitessio#16205) (vitessio#16207) Signed-off-by: Shlomi Noach <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] Fix flaky tests that use vtcombo (vitessio#16178) (vitessio#16212) Signed-off-by: Manan Gupta <[email protected]> Co-authored-by: Manan Gupta <[email protected]> Co-authored-by: Manan Gupta <[email protected]> * [release-19.0] Handle Nullability for Columns from Outer Tables (vitessio#16174) (vitessio#16185) Co-authored-by: Andrés Taylor <[email protected]> * [release-19.0] VDiff CLI: Fix VDiff `show` bug (vitessio#16177) (vitessio#16198) Signed-off-by: Rohit Nayak <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] VReplication Workflow: set state correctly when restarting workflow streams in the copy phase (vitessio#16217) (vitessio#16222) Signed-off-by: Rohit Nayak <[email protected]> Co-authored-by: Rohit Nayak <[email protected]> * [release-19.0] vtctldclient: Apply (Shard | Keyspace| Table) Routing Rules commands don't work (vitessio#16096) (vitessio#16124) Signed-off-by: Rohit Nayak <[email protected]> Co-authored-by: Rohit Nayak <[email protected]> * [release-19.0] Fix vtgate crash in group concat (vitessio#16254) Signed-off-by: Manan Gupta <[email protected]> * [release-19.0] Fix Incorrect Optimization with LIMIT and GROUP BY (vitessio#16263) (vitessio#16267) Signed-off-by: Andres Taylor <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> Co-authored-by: Florent Poinsard <[email protected]> Co-authored-by: Andres Taylor <[email protected]> * [release-19.0] Fix the `v19.0.0` release notes and use the `vitess/lite` image for the MySQL container (vitessio#16282) (vitessio#16285) Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> * [release-19.0] VReplication: Properly handle target shards w/o a primary in Reshard (vitessio#16283) (vitessio#16291) Signed-off-by: Matt Lord <[email protected]> Co-authored-by: Matt Lord <[email protected]> * [release-19.0] CI: Fix for xtrabackup install failures (vitessio#16329) (vitessio#16332) Signed-off-by: Matt Lord <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> Co-authored-by: Matt Lord <[email protected]> * [release-19.0] Upgrade the Golang version to `go1.22.5` (vitessio#16322) Signed-off-by: GitHub <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: frouioui <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> * [release-19.0] Fix the install dependencies script in Docker (vitessio#16340) (vitessio#16346) Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] planner: Handle ORDER BY inside derived tables (vitessio#16353) (vitessio#16359) Signed-off-by: Andres Taylor <[email protected]> Co-authored-by: Andres Taylor <[email protected]> * [release-19.0] Fix Join Predicate Cleanup Bug in Route Merging (vitessio#16386) (vitessio#16389) Signed-off-by: Andres Taylor <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: Andres Taylor <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> * [release-19.0] fix issue with aggregation inside of derived tables (vitessio#16366) (vitessio#16384) Signed-off-by: Andres Taylor <[email protected]> Co-authored-by: Andrés Taylor <[email protected]> * [release-19.0] Use default schema reload config values when config file is empty (vitessio#16393) (vitessio#16410) Signed-off-by: Matt Lord <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] Fix subquery planning having an aggregation that is used in order by as long as we can merge it all into a single route (vitessio#16402) (vitessio#16407) Signed-off-by: Manan Gupta <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> * [release-19.0] Fix panic in schema tracker in presence of keyspace routing rules (vitessio#16383) (vitessio#16406) Signed-off-by: Manan Gupta <[email protected]> * [release-19] Vitess tester workflow (vitessio#16127) (vitessio#16418) Signed-off-by: Manan Gupta <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> * [release-19.0] feat: add a LIMIT 1 on EXISTS subqueries to limit network overhead (vitessio#16153) (vitessio#16191) Signed-off-by: Andres Taylor <[email protected]> Co-authored-by: Andrés Taylor <[email protected]> * [release-19.0] Code Freeze for `v19.0.5` (vitessio#16448) Signed-off-by: Andres Taylor <[email protected]> * [release-19.0] Release of `v19.0.5` (vitessio#16450) Signed-off-by: Andres Taylor <[email protected]> * Fix new test Signed-off-by: Tim Vaillancourt <[email protected]> --------- Signed-off-by: Andres Taylor <[email protected]> Signed-off-by: notfelineit <[email protected]> Signed-off-by: <> Signed-off-by: bddicken <[email protected]> Signed-off-by: Harshit Gangal <[email protected]> Signed-off-by: Vicent Marti <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Signed-off-by: GitHub <[email protected]> Signed-off-by: Arthur Schreiber <[email protected]> Signed-off-by: Manan Gupta <[email protected]> Signed-off-by: Frances Thai <[email protected]> Signed-off-by: Shlomi Noach <[email protected]> Signed-off-by: Rohit Nayak <[email protected]> Signed-off-by: Florent Poinsard <[email protected]> Signed-off-by: Matt Lord <[email protected]> Signed-off-by: Tim Vaillancourt <[email protected]> Co-authored-by: Andrés Taylor <[email protected]> Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com> Co-authored-by: Frances Thai <[email protected]> Co-authored-by: Harshit Gangal <[email protected]> Co-authored-by: vitess-bot <[email protected]> Co-authored-by: frouioui <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> Co-authored-by: Arthur Schreiber <[email protected]> Co-authored-by: Manan Gupta <[email protected]> Co-authored-by: Manan Gupta <[email protected]> Co-authored-by: Rohit Nayak <[email protected]> Co-authored-by: Florent Poinsard <[email protected]> Co-authored-by: Matt Lord <[email protected]>
Description
As part of the bootup process,
vttablet
reloads the schema engine, with table statistics information like table size, via theBaseShowTablesWithSizes
query. This query is relatively expensive, but calling it once onvttablet
bootup doesn't really seem much like an issue in production environments.But in
vtcombo
, where a lot ofvttablet
instances are booted up on startup, all theseBaseShowTablesWithSizes
calls can add up, especially when there's a lot of tables / tablespaces.In our CI system, where we use
vtcombo
, just the process of startingvtcombo
on MySQL 8.0 takes 70 (!) seconds. On MySQL 5.7, it takes 26 seconds.I already prepared a PR to halve the cost of running
BaseShowTablesWithSizes
on MySQL 8.0. But you know what's even better than halving the cost of this query? Not even running it in the first place!This pull request proposes to skip the table size collection when booting up
vttablet
. This will improve the startup time, with virtually no negative side effect. The table statistics will be collected during the next regular schema engine reload interval.This brings
vtcombo
bootup time in our CI system down to roughly 15 seconds, both on MySQL 5.7 and MySQL 8.0.I'd really love to see this backported, because it's a massive performance improvement for everyone using
vtcombo
without any noticeable negative side effects, and it'd reduce the amount of patches I need to juggle until we get to a more recent version of Vitess. 😬Related Issue(s)
#16085
Checklist
Deployment Notes