backup: fix AdminUnsplit race in online restore download cleanup#169758
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backup: fix AdminUnsplit race in online restore download cleanup#169758msbutler wants to merge 2 commits intocockroachdb:masterfrom
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Introduce a typed sentinel error for the "key is not the start of a range" condition returned by AdminUnsplit. This replaces brittle strings.Contains checks with errors.Is, while including a string fallback in the IsKeyNotStartOfRange helper for mixed-version compatibility. Migrate the GC job's unsplitRangesInSpan to use the new helper. Epic: none Fixes: cockroachdb#169637 Co-Authored-By: roachdev-claude <[email protected]>
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A race between the GC job and the online restore download job could cause AdminUnsplit to fail with "key is not the start of a range" when the GC job merges ranges that the download job later tries to unsplit. This caused retry spiraling and eventual job failure. Make unstickRestoreSpans swallow "not start of range" errors (the range already merged, so the sticky bit is gone) and use besteffort.Warning for other errors, since unsplitting is cleanup that should not block the restore. Epic: none Fixes: cockroachdb#169637 Co-Authored-By: roachdev-claude <[email protected]>
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kvpb: add ErrKeyNotStartOfRange sentinel for AdminUnsplit
Introduce a typed sentinel error for the "key is not the start of a
range" condition returned by AdminUnsplit. This replaces brittle
strings.Contains checks with errors.Is, while including a string
fallback in the IsKeyNotStartOfRange helper for mixed-version
compatibility.
Migrate the GC job's unsplitRangesInSpan to use the new helper.
Epic: none
Fixes: #169637
Co-Authored-By: roachdev-claude [email protected]
backup: make unstickRestoreSpans best-effort
A race between the GC job and the online restore download job could
cause AdminUnsplit to fail with "key is not the start of a range" when
the GC job merges ranges that the download job later tries to unsplit.
This caused retry spiraling and eventual job failure.
Make unstickRestoreSpans swallow "not start of range" errors (the
range already merged, so the sticky bit is gone) and use
besteffort.Warning for other errors, since unsplitting is cleanup
that should not block the restore.
Epic: none
Fixes: #169637