From bc1b4957e495505e0065a36815c6ba10d9af2412 Mon Sep 17 00:00:00 2001 From: Anton Nikiforov Date: Thu, 21 Nov 2024 13:17:16 +0300 Subject: [PATCH] [#1516] traverser: Check for placement vector out of range Placement vector may contain fewer nodes count than it required by policy due to the outage of the one of the node. Signed-off-by: Anton Nikiforov --- .../object_manager/placement/traverser.go | 10 +++- .../placement/traverser_test.go | 46 +++++++++++++++++++ 2 files changed, 54 insertions(+), 2 deletions(-) diff --git a/pkg/services/object_manager/placement/traverser.go b/pkg/services/object_manager/placement/traverser.go index 6440f187d..b63c89e95 100644 --- a/pkg/services/object_manager/placement/traverser.go +++ b/pkg/services/object_manager/placement/traverser.go @@ -114,8 +114,14 @@ func NewTraverser(opts ...Option) (*Traverser, error) { var unsortedVector []netmap.NodeInfo var regularVector []netmap.NodeInfo for i := range rem { - unsortedVector = append(unsortedVector, ns[i][:rem[i]]...) - regularVector = append(regularVector, ns[i][rem[i]:]...) + if len(ns[i]) < rem[i] { + unsortedVector = append(unsortedVector, ns[i]...) + } else { + unsortedVector = append(unsortedVector, ns[i][:rem[i]]...) + if len(ns[i]) > rem[i] { + regularVector = append(regularVector, ns[i][rem[i]:]...) + } + } } rem = []int{-1, -1} diff --git a/pkg/services/object_manager/placement/traverser_test.go b/pkg/services/object_manager/placement/traverser_test.go index 38f62aa07..f96e5c8a7 100644 --- a/pkg/services/object_manager/placement/traverser_test.go +++ b/pkg/services/object_manager/placement/traverser_test.go @@ -356,6 +356,52 @@ func TestTraverserPriorityMetrics(t *testing.T) { require.Nil(t, next) }) + t.Run("one rep one metric fewer nodes", func(t *testing.T) { + selectors := []int{2} + replicas := []int{3} + + nodes, cnr := testPlacement(selectors, replicas) + + // Node_0, PK - ip4/0.0.0.0/tcp/0 + nodes[0][0].SetAttribute("ClusterName", "A") + // Node_1, PK - ip4/0.0.0.0/tcp/1 + nodes[0][1].SetAttribute("ClusterName", "B") + + sdkNode := testNode(5) + sdkNode.SetAttribute("ClusterName", "B") + + nodesCopy := copyVectors(nodes) + + m := []Metric{NewAttributeMetric("ClusterName")} + + tr, err := NewTraverser( + ForContainer(cnr), + UseBuilder(&testBuilder{ + vectors: nodesCopy, + }), + WithoutSuccessTracking(), + WithPriorityMetrics(m), + WithNodeState(&nodeState{ + node: &sdkNode, + }), + ) + require.NoError(t, err) + + // Without priority metric `ClusterName` the order will be: + // [ {Node_0 A}, {Node_1 A} ] + // With priority metric `ClusterName` and current node in cluster B + // the order should be: + // [ {Node_1 B}, {Node_0 A} ] + next := tr.Next() + require.NotNil(t, next) + require.Equal(t, 2, len(next)) + require.Equal(t, "/ip4/0.0.0.0/tcp/1", string(next[0].PublicKey())) + require.Equal(t, "/ip4/0.0.0.0/tcp/0", string(next[1].PublicKey())) + + next = tr.Next() + require.Nil(t, next) + }) + t.Run("two reps two metrics", func(t *testing.T) { selectors := []int{3, 3} replicas := []int{2, 2}