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Chris LuandGitHub
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* rust: only compare the .dat tail on v3 volumes Go's verifyNeedleIntegrity does the "does .dat end exactly at the last indexed needle" comparison inside its v3 branch -- it rides along with the v3 append-timestamp read -- so a v1/v2 volume carrying an unindexed trailing record loads read-write and silent. The Rust check ran it at every version, so booting the Rust server on a legacy cluster warned on and quarantined volumes the Go server had been serving happily. * rust: load a disk's volumes concurrently Opening a volume is dominated by reading its .idx into the needle map, and the loader did them one at a time, so a disk holding thousands of volumes needed thousands of serial index reads before the server came up. Go's concurrentLoadingVolumes spreads the same work over max(cores, 10) workers; do the same, keeping the directory pre-pass and the insert serial so only the open is parallel. * rust: let a failed volume open fall back to the next candidate Two collections can name the same volume id on one disk. Deduping the load queue by id claimed the id for whichever candidate the scan saw first, so a corrupt one shadowed a good one behind it; the serial loader this replaced only claimed an id once a volume had actually opened. Carry every claiming collection per id and try them in scan order until one loads. * rust: trim the new comments in the volume loader