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Add node interlace to GroupMapper's TScore #13458

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Merged
merged 2 commits into from
Jan 24, 2025
Merged

Add node interlace to GroupMapper's TScore #13458

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f59e023
Add node interlace to GroupMapper's TScode
SammyVimes Jan 16, 2025
f28b503
Remove odd test
SammyVimes Jan 20, 2025
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18 changes: 15 additions & 3 deletions ydb/core/mind/bscontroller/group_layout_checker.h
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Original file line number Diff line number Diff line change
Expand Up @@ -72,13 +72,15 @@ namespace NKikimr::NBsController {
TEntityId RealmGroup;
TEntityId Realm;
TEntityId Domain;
TEntityId Node;

TPDiskLayoutPosition() = default;

TPDiskLayoutPosition(TEntityId realmGroup, TEntityId realm, TEntityId domain)
TPDiskLayoutPosition(TEntityId realmGroup, TEntityId realm, TEntityId domain, TEntityId node)
: RealmGroup(realmGroup)
, Realm(realm)
, Domain(domain)
, Node(node)
{}

TPDiskLayoutPosition(TDomainMapper& mapper, const TNodeLocation& location, TPDiskId pdiskId, const TGroupGeometryInfo& geom) {
Expand All @@ -102,6 +104,7 @@ namespace NKikimr::NBsController {
RealmGroup = mapper(realmGroup.Str());
Realm = mapper(realm.Str());
Domain = mapper(domain.Str());
Node.Value = pdiskId.NodeId;
}

TString ToString() const {
Expand All @@ -124,12 +127,13 @@ namespace NKikimr::NBsController {
struct TScore {
ui32 RealmInterlace = 0;
ui32 DomainInterlace = 0;
ui32 NodeInterlace = 0;
ui32 RealmGroupScatter = 0;
ui32 RealmScatter = 0;
ui32 DomainScatter = 0;

auto AsTuple() const {
return std::make_tuple(RealmInterlace, DomainInterlace, RealmGroupScatter, RealmScatter, DomainScatter);
return std::make_tuple(RealmInterlace, DomainInterlace, NodeInterlace, RealmGroupScatter, RealmScatter, DomainScatter);
}

bool BetterThan(const TScore& other) const {
Expand All @@ -141,12 +145,13 @@ namespace NKikimr::NBsController {
}

static TScore Max() {
return {::Max<ui32>(), ::Max<ui32>(), ::Max<ui32>(), ::Max<ui32>(), ::Max<ui32>()};
return {::Max<ui32>(), ::Max<ui32>(), ::Max<ui32>(), ::Max<ui32>(), ::Max<ui32>(), ::Max<ui32>()};
}

TString ToString() const {
return TStringBuilder() << "{RealmInterlace# " << RealmInterlace
<< " DomainInterlace# " << DomainInterlace
<< " NodeInterlace# " << NodeInterlace
<< " RealmGroupScatter# " << RealmGroupScatter
<< " RealmScatter# " << RealmScatter
<< " DomainScatter# " << DomainScatter
Expand All @@ -168,6 +173,8 @@ namespace NKikimr::NBsController {
TStackVec<THashMap<TEntityId, ui32>, 32> NumDisksPerDomain;
THashMap<TEntityId, ui32> NumDisksPerDomainTotal;

THashMap<TEntityId, ui32> NumDisksPerNode;

TGroupLayout(const TBlobStorageGroupInfo::TTopology& topology)
: Topology(topology)
, NumDisksInRealm(Topology.GetTotalFailRealmsNum())
Expand All @@ -187,6 +194,8 @@ namespace NKikimr::NBsController {
NumDisksInDomain[domainIdx] += value;
NumDisksPerDomain[domainIdx][pos.Domain] += value;
NumDisksPerDomainTotal[pos.Domain] += value;

NumDisksPerNode[pos.Node] += value;
}

void AddDisk(const TPDiskLayoutPosition& pos, ui32 orderNumber) {
Expand All @@ -204,9 +213,12 @@ namespace NKikimr::NBsController {
const auto& disksPerRealm = NumDisksPerRealm[vdisk.FailRealm][pos.Realm];
const auto& disksPerDomain = NumDisksPerDomain[domainIdx][pos.Domain];

const ui32 disksOnNode = NumDisksPerNode[pos.Node];

return {
.RealmInterlace = NumDisksPerRealmTotal[pos.Realm] - disksPerRealm,
.DomainInterlace = NumDisksPerDomainTotal[pos.Domain] - disksPerDomain,
.NodeInterlace = disksOnNode,
.RealmGroupScatter = NumDisks - NumDisksPerRealmGroup[pos.RealmGroup],
.RealmScatter = NumDisksInRealm[vdisk.FailRealm] - disksPerRealm,
.DomainScatter = NumDisksInDomain[domainIdx] - disksPerDomain,
Expand Down
4 changes: 2 additions & 2 deletions ydb/core/mind/bscontroller/group_mapper.cpp
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Expand Up @@ -405,7 +405,7 @@ namespace NKikimr::NBsController {

static std::pair<TPDiskLayoutPosition, TPDiskLayoutPosition> MakeRange(const TPDiskLayoutPosition& x, TEntityId& scope) {
scope = x.Realm;
return {{x.RealmGroup, x.Realm, TEntityId::Min()}, {x.RealmGroup, x.Realm, TEntityId::Max()}};
return {{x.RealmGroup, x.Realm, TEntityId::Min(), TEntityId::Min()}, {x.RealmGroup, x.Realm, TEntityId::Max(), TEntityId::Max()}};
}
};

Expand All @@ -415,7 +415,7 @@ namespace NKikimr::NBsController {

static std::pair<TPDiskLayoutPosition, TPDiskLayoutPosition> MakeRange(const TPDiskLayoutPosition& x, TEntityId& scope) {
scope = x.RealmGroup;
return {{x.RealmGroup, TEntityId::Min(), TEntityId::Min()}, {x.RealmGroup, TEntityId::Max(), TEntityId::Max()}};
return {{x.RealmGroup, TEntityId::Min(), TEntityId::Min(), TEntityId::Min()}, {x.RealmGroup, TEntityId::Max(), TEntityId::Max(), TEntityId::Max()}};
}
};

Expand Down
37 changes: 33 additions & 4 deletions ydb/core/mind/bscontroller/group_mapper_ut.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -593,10 +593,6 @@ Y_UNIT_TEST_SUITE(TGroupMapperTest) {
TestBlock42(1);
}

Y_UNIT_TEST(Block42_2disk) {
TestBlock42(2);
}

Y_UNIT_TEST(Mirror3dc) {
TTestContext context(6, 3, 3, 3, 3);
TGroupMapper mapper(TTestContext::CreateGroupGeometry(TBlobStorageGroupType::ErasureMirror3dc));
Expand Down Expand Up @@ -638,6 +634,39 @@ Y_UNIT_TEST_SUITE(TGroupMapperTest) {
}
}

Y_UNIT_TEST(InterlacedRacksWithoutInterlacedNodes) {
TTestContext context(
{
{1, 1, 1, 1, 1}, // node 1
{1, 1, 2, 1, 1},
{1, 1, 3, 1, 2}, // node 3 has two disks
{1, 1, 4, 1, 1},
{1, 1, 5, 1, 1},
{1, 1, 6, 1, 1},
{1, 1, 2, 1, 1}, // node 7 is in the same rack as node 2
{1, 1, 8, 1, 1},
{1, 1, 3, 1, 1}, // node 9 is in the same rack as node 3
}
);

TGroupMapper mapper(TTestContext::CreateGroupGeometry(TBlobStorageGroupType::Erasure4Plus2Block));
context.PopulateGroupMapper(mapper, 8);

TGroupMapper::TGroupDefinition group;
group.emplace_back(TVector<TVector<TPDiskId>>(8));
auto& g = group[0];

for (int i = 0; i < 8; i++) {
g[i].emplace_back(TPDiskId(i + 1, 1));
}

context.SetGroup(1, group);

TGroupMapper::TGroupDefinition newGroup = context.ReallocateGroup(mapper, 1, {TPDiskId(8, 1)});

UNIT_ASSERT_EQUAL_C(TPDiskId(9, 1), newGroup[0][7][0], context.FormatGroup(newGroup));
}

Y_UNIT_TEST(NonUniformClusterDifferentSlotsPerDisk) {
std::vector<std::tuple<ui32, ui32, ui32, ui32, ui32>> disks;
for (ui32 rack = 0; rack < 12; ++rack) {
Expand Down
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