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Posted to github@arrow.apache.org by "mrkorchun (via GitHub)" <gi...@apache.org> on 2026/08/07 11:41:18 UTC
[PR] Support LocalFileSystem on Android [arrow-rs-object-store]
mrkorchun opened a new pull request, #826:
URL: https://github.com/apache/arrow-rs-object-store/pull/826
Closes #459. Supersedes the closed #460 with the requested Linux-testable path.\n\nAndroid app storage rejects hard links with EACCES. This keeps PutMode::Create and CopyMode::Create atomic by copying to a unique staging file and publishing it with renameat2(RENAME_NOREPLACE). CopyMode::Overwrite also stages by byte copy. The current fsync/close-error guarantees are preserved.\n\nA private test-only toggle makes the existing LocalFileSystem integration helpers exercise the Android path on Linux; it adds no public feature.\n\nVerified:\n- cargo check --lib\n- cargo test file_test_without_hard_links\n- the v0.13.2 backport of the same mechanism: native aarch64-linux-android LocalFileSystem suite, 17 passed / 1 ignored
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Re: [PR] Support LocalFileSystem on Android [arrow-rs-object-store]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on PR #826:
URL: https://github.com/apache/arrow-rs-object-store/pull/826#issuecomment-6224956479
Is there a reason a downstream crate can't implement this themselves as `AndroidLocalFileSystem` or something?
I would personally prefer that hte core object_store crate stays pretty focused as I don't have a huge amount of maintenance bandwith. A new
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Re: [PR] Support LocalFileSystem on Android [arrow-rs-object-store]
Posted by "mrkorchun (via GitHub)" <gi...@apache.org>.
mrkorchun commented on PR #826:
URL: https://github.com/apache/arrow-rs-object-store/pull/826#issuecomment-5217243241
Confirmed on the affected device from ordinary Termux, outside PRoot:\n\n- aarch64 Android, kernel 6.6.98\n- Rust host: aarch64-linux-android\n- std::fs::hard_link: EACCES (reproduced)\n- OmniGraph/Lance dataset initialization using the backport: succeeded\n- exit status: 0\n\nThis is an end-to-end confirmation that the renameat2 fallback works where the original hard-link path fails.
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