Cleanup Stale Root Level Blobs in Sn. Repository (#43542)#44226
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original-brownbear merged 1 commit intoelastic:7.xfrom Jul 11, 2019
original-brownbear:43542-7.x
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Cleanup Stale Root Level Blobs in Sn. Repository (#43542)#44226original-brownbear merged 1 commit intoelastic:7.xfrom original-brownbear:43542-7.x
original-brownbear merged 1 commit intoelastic:7.xfrom
original-brownbear:43542-7.x
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* Cleans up all root level temp., snap-%s.dat, meta-%s.dat blobs that aren't referenced by any snapshot to deal with dangling blobs left behind by delete and snapshot finalization failures * The scenario that get's us here is a snapshot failing before it was finalized or a delete failing right after it wrote the updated index-(N+1) that doesn't reference a snapshot anymore but then fails to remove that snapshot * Not deleting other dangling blobs since that don't follow the snap-, meta- or tempfile naming schemes to not accidentally delete blobs not created by the snapshot logic * Follow up to #42189 * Same safety logic, get list of all blobs before writing index-N blobs, delete things after index-N blobs was written
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backport of #43542