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[#1318] metabase: Separate buckets with TS and GC marks

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It allows storing information about object in both ways at the same time:
1. Metabase should know if an object is covered by a tombstone (that is
not expired yet);
2. It should be possible to physically delete objects covered by a
tombstone immediately (mark with GC) but keep tombstone knowledge.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
This commit is contained in:
Pavel Karpy 2021-04-08 17:19:31 +03:00 • committed by LeL
parent b74fb2b932
commit 8107c8d1a9
9 changed files with 163 additions and 84 deletions
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9
pkg/local_object_storage/metabase/util.go
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@ -21,7 +21,14 @@ bytes. Check it later.
const invalidBase58String = "_"
var (
graveyardBucketName = []byte(invalidBase58String + "Graveyard")
// graveyardBucketName stores rows with the objects that have been
// covered with Tombstone objects. That objects should not be returned
// from the node and should not be accepted by the node from other
// nodes.
graveyardBucketName = []byte(invalidBase58String + "Graveyard")
// garbageBucketName stores rows with the objects that should be physically
// deleted by the node (Garbage Collector routine).
garbageBucketName = []byte(invalidBase58String + "Garbage")
toMoveItBucketName = []byte(invalidBase58String + "ToMoveIt")
containerVolumeBucketName = []byte(invalidBase58String + "ContainerSize")