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Chris Lu
b0ab4c4e1e
* shell: make every -collection flag parse the same way The filter vocabulary (comma-separated names, wildcards, regexes, "_default" for the empty-named collection) already existed in wildcard.CompileCollectionMatcher, but several commands still did their own exact-match comparison or sent the raw flag value to servers. fs.mergeVolumes used a literal string compare, so -collection=_default silently produced an empty merge plan; it now uses the shared matcher while keeping "*" as the match-all default. volume.fsck and volume.mark filter through the matcher too, and volume.vacuum resolves the filter client-side into per-collection and per-volume requests, since no Collection value scopes the VacuumVolume RPC to the unnamed collection alone. Commands that put one concrete collection name on the wire normalize "_default" to "" (volume.grow, fs.configure, mq.topic.compact, collection.delete, ec.rebuild, ec.balance), and the tier -volumeId commands resolve the volume's actual collection from topology first so patterns and named-collection requests pass the volume server's collection check. * shell: spell the default-collection keyword via CollectionDefault * shell: address review findings on collection filter handling volume.fsck keeps a set of every volume the master knows before any filtering, so a filer entry whose volume was excluded by -collection or -volumeId is skipped instead of reported "volume not found" and deleted by -reallyDeleteFilerEntries. The collection filter also no longer scopes the filer walk to /buckets/<collection>: fs.configure can bind a collection to any path prefix, and a narrower walk could mark live chunks as orphans under -reallyDeleteFromVolume. ec.rebuild and ec.balance resolve -collection through the new wildcard.ExpandCollectionFilter, which passes literal names through even when the master does not list them — ec.rebuild must be able to recover a collection whose shards all lost their index and never registered. fs.configure and mq.topic.compact now reject _default outright: an empty Collection means "unset" in both the path-rule merge and the filer's storage-option fallback chain, so the keyword would have been silently ignored. The unnamed-collection vacuum sweep keeps the master's low-disk-space exception: a volume whose every replica is read-only is probed with VacuumVolumeCheck and stays eligible when a replica reports DiskSpaceLow, instead of being dropped outright.