realloc/frostfs-api-go
1
0
Fork 0
forked from TrueCloudLab/frostfs-api-go
Code Issues Pull requests Projects Releases Packages Wiki Activity

[#248] netmap: fulfill backup factor for default attribute

Browse source 
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2021-01-28 14:52:51 +03:00 • committed by Alex Vanin
parent 42657aaf11
commit 5d9ef5feec
3 changed files with 70 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

12
pkg/netmap/selector.go
View file

@ -48,6 +48,7 @@ func GetNodesCount(_ *PlacementPolicy, s *Selector) (int, int) {
}
// getSelection returns nodes grouped by s.attribute.
// Last argument specifies if more buckets can be used to fullfill CBF.
func (c *Context) getSelection(p *PlacementPolicy, s *Selector) ([]Nodes, error) {
bucketCount, nodesInBucket := GetNodesCount(p, s)
buckets := c.getSelectionBase(s)
@ -99,6 +100,17 @@ func (c *Context) getSelection(p *PlacementPolicy, s *Selector) ([]Nodes, error)
hrw.SortSliceByWeightIndex(nodes, weights, c.pivotHash)
}
if s.Attribute() == "" {
nodes, fallback = nodes[:bucketCount], nodes[bucketCount:]
for i := range fallback {
index := i % bucketCount
if len(nodes[index]) >= maxNodesInBucket {
break
}
nodes[index] = append(nodes[index], fallback[i]...)
}
}
return nodes[:bucketCount], nil
}