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fix(file-provider): scan into a new directory created inside a pinned folder - #11031
juliusvaart wants to merge 1 commit into
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@juliusvaart I am sorry it took so long. Please rebase your work onto the latest This also applies to your other pull requests which I now want to focus on fully to finally get this whole sync performance problem complex resolved until version 36 (with gradual ports back to 35 based on progress). Once pull requests have been merged, the ports back likely will cause conflicts and fail due to the changes introduced with #11004. We will deal with that later in due time. Because the changes of #11004 do not completely change architecture but mostly call site signatures, the back ports are expected to not cause double work. |
… folder The working-set scan only descends into a changed child directory when something inside it is already materialised, which keeps one push from walking whole never-visited subtrees on a sparse domain. A directory created on the server inside a pinned folder can never pass that test, because nothing inside it is known yet. The folder appeared locally while the files in it stayed invisible until the user opened it, and no later pass recovered them, because the row is not visitedDirectory and so never seeds the scan. "Always keep downloaded" asks for the whole subtree, so the scan now descends when the child carries the pin. The bound holds everywhere else. The pin is read from the stored row, because the read applies the parent's pin to a new row on its own copy, so the metadata it hands back still has the value from before. Assisted-by: ClaudeCode:claude-opus-5-5 Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Signed-off-by: Julius van der Vaart <julius@vanderva.art>
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Hi @i2h3, Nice work on the GRDB move! All nine my PR's are rebased onto master at 3527955, including the #11004 changes: #10733, #10809, #10810, #10811, #10812, #11024, #11025, #11030 and #11031. Each passes the full package suite and SwiftFormat lint. The two performance claims were re-measured on the SQLite store with the harness from #10733: #10809's working-set walk goes from 7.5–7.9 s to 1.9–2.0 s with the same 203 PROPFINDs, and #10811 still removes all 501 redundant row writes on a repeat enumeration (its duration gain is within noise, so I no longer claim one). The descriptions are updated to match. |
i2h3
added
bug
os: 🍎 macOS
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/backport to stable-35.0 |
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I tested the branch by hand against a local server and also ran the PR's base commit as a control. On my machine, the behaviour described in the PR does not reproduce without the fix: the files in the new folder still appear and get downloaded, just about one minute later. Setup
Observed timings, counted from the working-set change batch that reports
In both runs, the download was started by This matches the What this means for the PR
Question Do you have logs from the account where you saw the files stay invisible? It would help to know whether |
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4 participants
Resolves
No issue filed. Found while testing on a live account.
Summary
A folder created on the server inside a folder set to "Always keep downloaded" appears locally, but the files in it stay invisible until the user opens it.
The working-set scan only descends into a changed child directory when something inside it is already materialised. That bound keeps a single push from walking entire never-visited subtrees on a sparse domain. A directory created on the server can never pass it, because nothing inside it is known yet. No later pass recovers the files either: the new row is not
visitedDirectory, so it never seeds the scan.The fix
"Always keep downloaded" asks for the whole subtree, so the scan now also descends when the child carries the pin. The bound still holds for every folder that is not pinned.
The pin is read from the stored row rather than from the metadata the read returns, because
depth1ReadUpdateItemMetadatasapplies the parent's pin to a new row on its own copy.The change is 6 lines in
Enumerator+WorkingSetScan.swift.Tests
New
RemoteChangePropagationTests.testNewFolderUnderAPinnedFolderIsCrawled: a pinned folder gains a new subfolder holding a file. The test checks that the subfolder is read and that the file is reported. Both assertions fail without the fix and pass with it. The seeding helper gained akeepDownloadedparameter for it.Full suite, run locally with
swift teston top ofmaster(edf26f2b1b):3527955c09.EnumeratorTestscases (testWorkingSetChangesBatchMixingUpdatesAndDeletions,testWorkingSetChangesResumeAcrossNewEnumeratorInstances). They fail the same way on unmodifiedmaster: three runs there gave 1, 0 and 3 failures. A rerun ofEnumeratorTestson this branch was clean.swiftformat --lintandgit diff --checkare clean.Checklist
AI (if applicable)
The code, tests and this description were written by Claude Code (Claude Opus 5.5) at my request, from a diagnosis of my own account's logs and database.
🤖 Generated with Claude Code