Fix software install status timeouts - #52289
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Pull request overview
This PR addresses software title/install status timeouts by rewriting the “most recent per-host” selection over install history to use ROW_NUMBER() (avoiding correlated self anti-joins / per-host rescans), and adds regression tests to pin both correctness and query cost behavior.
Changes:
- Rewrites “past activity per host” selection in VPP, in-house app, and installer/title host-status query paths to use
ROW_NUMBER() OVER (PARTITION BY host_id ORDER BY created_at DESC, id DESC). - Adds
SELECT DISTINCTin the MDM builders to avoid pre-existing host double-counting due tonano_command_resultsfan-out joins. - Adds datastore tests to pin latest-row selection semantics and bound row-access costs.
Reviewed changes
Copilot reviewed 4 out of 5 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| server/datastore/mysql/vpp.go | Replaces the historical per-host anti-join with a ROW_NUMBER() ranking strategy for VPP install history status. |
| server/datastore/mysql/software_installers.go | Applies ranking-based rewrites to installer/title/VPP/in-house host-status filters and adds DISTINCT in MDM builders. |
| server/datastore/mysql/software_installers_test.go | Adds regression tests for latest-row selection correctness and for bounding scan cost behavior. |
| server/datastore/mysql/in_house_apps.go | Replaces the historical per-host anti-join with a ROW_NUMBER() ranking strategy for in-house app install history status. |
| changes/51426-software-title-install-history-timeout | Release note (excluded from diff by policy). |
Files excluded by content exclusion policy (1)
- changes/51426-software-title-install-history-timeout
Suppressed comments (2)
server/datastore/mysql/software_installers_test.go:7690
- Fleet backend testing guidelines prefer using t.Context() instead of context.Background() (.claude/rules/fleet-go-backend.md:92).
ctx := context.Background()
server/datastore/mysql/software_installers_test.go:7808
- Fleet backend testing guidelines prefer using t.Context() instead of context.Background() (.claude/rules/fleet-go-backend.md:92).
ctx := context.Background()
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WalkthroughThe change replaces correlated self-joins with Merge Risk: 🟡 Moderate · up to The PR changes how software-install status is selected per host, but command results may still be matched without restricting them to the same host. That could assign one device’s status to another device and duplicate rows or counts, so the change needs owner follow-up before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Description checkExplanation The description identifies both related issues, explains the cause and solution, documents performance results, and completes the relevant checklist and testing sections. Omitted template sections are not applicable to this backend-only change. Full details: Linked Issues checkExplanation The changes address both linked issues [
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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Inline comments:
In `@server/datastore/mysql/software_installers.go`:
- Around line 2555-2556: Update vppAppJoin and inHouseAppJoin in
server/datastore/mysql/software_installers.go at lines 2555-2556 and 2737-2738:
join hosts within each ranked subquery, project h.uuid as host_uuid, and require
both ncr.id = ranked.host_uuid and ncr.command_uuid = ranked.command_uuid when
joining nano_command_results.
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📒 Files selected for processing (5)
changes/51426-software-title-install-history-timeoutserver/datastore/mysql/in_house_apps.goserver/datastore/mysql/software_installers.goserver/datastore/mysql/software_installers_test.goserver/datastore/mysql/vpp.go
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #52289 +/- ##
==========================================
+ Coverage 69.78% 69.79% +0.01%
==========================================
Files 4071 4075 +4
Lines 265456 265802 +346
Branches 14184 14184
==========================================
+ Hits 185242 185529 +287
- Misses 64015 64058 +43
- Partials 16199 16215 +16
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Inline comments:
In `@server/datastore/mysql/software_installers.go`:
- Line 2535: Update the ranked subqueries used by vppAppJoin and inHouseAppJoin
to project each host UUID, then constrain their nano_command_results joins by
both host UUID and command UUID. Confirm each join remains one row per host so
host counts and detail rows are not duplicated without SELECT DISTINCT.
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server/datastore/mysql/software_installers.go
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| // removed = 0, so I am porting the same behavior (there's even a test that | ||
| // fails if I add removed = 0 condition). | ||
| // Rank once over the app rather than looking the latest row up per host: | ||
| // host_vpp_software_installs has no host_id-leading index, so a correlated |
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This is no longer true - see here.
I don't think anything needs to change with these queries though, we already have an index on (adam_id, platform) that should be discriminatory enough.
Related issue: Resolves #51426. Also fixes #51563, the same defect in
GetSummaryHostVPPAppInstalls.These queries pick the most recent activity per host twice: once over the pending queue, once over the completed install history. #47949 rewrote only the queue half. This applies the same
ROW_NUMBER()rewrite to the history half at the six remaining fleet-wide sites.The rewrite is output-identical by construction.
(created_at, id)is a total order, so exactly one row per host already survived.status, the queue check, and the VPPnano_command_resultsguard all stay afterrn = 1. Folding any of them into the ranking would pick a different row.GET /software/titles/:idGET /hosts/count?…&software_status=installedRanking now runs before the status filter, so one case costs more. A status that matches no hosts goes from 0.54 s to 0.76 s. A status that matches every host goes from 10.2 s to 0.64 s.
Checklist for submitter
changes/.SELECT *is avoided, SQL injection is prevented (using placeholders for values in statements).Testing
testInstallStatusUsesLatestRowPerHostpins row selection. The newest row wins over an older success. Canceled and removed rows fall back to the previous row. Acreated_attie breaks byid, and a queued install supersedes history. It passes onmaintoo.testInstallStatusDoesNotScanHistoryPerHostRowbounds rows touched, and fails onmain.Summary by CodeRabbit