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[#191] engine: Allow to remove redundant object copies

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RemoveDuplicates() removes all duplicate object copies stored on
multiple shards. All shards are processed and the command tries to leave
a copy on the best shard according to HRW.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
This commit is contained in:
Evgenii Stratonikov 2023-03-30 14:49:15 +03:00 • committed by Gitea
parent cb172e73a6
commit dbc3811ff4
4 changed files with 358 additions and 5 deletions
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15
pkg/local_object_storage/engine/shards.go
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@ -208,16 +208,21 @@ func (e *StorageEngine) sortShardsByWeight(objAddr interface{ EncodeToString() s
e.mtx.RLock()
defer e.mtx.RUnlock()
h := hrw.Hash([]byte(objAddr.EncodeToString()))
shards := make([]hashedShard, 0, len(e.shards))
weights := make([]float64, 0, len(e.shards))
for _, sh := range e.shards {
shards = append(shards, hashedShard(sh))
weights = append(weights, e.shardWeight(sh.Shard))
}
return sortShardsByWeight(shards, h)
}
func sortShardsByWeight(shards []hashedShard, h uint64) []hashedShard {
weights := make([]float64, 0, len(shards))
for _, sh := range shards {
weights = append(weights, float64(sh.Shard.WeightValues().FreeSpace))
}
hrw.SortHasherSliceByWeightValue(shards, weights, hrw.Hash([]byte(objAddr.EncodeToString())))
hrw.SortHasherSliceByWeightValue(shards, weights, h)
return shards
}