std::size_t SimpleCostModel::estimateCardinality(
const P::PhysicalPtr &physical_plan) {
switch (physical_plan->getPhysicalType()) {
case P::PhysicalType::kTopLevelPlan:
return estimateCardinalityForTopLevelPlan(
std::static_pointer_cast<const P::TopLevelPlan>(physical_plan));
case P::PhysicalType::kTableReference:
return estimateCardinalityForTableReference(
std::static_pointer_cast<const P::TableReference>(physical_plan));
case P::PhysicalType::kSelection:
return estimateCardinalityForSelection(
std::static_pointer_cast<const P::Selection>(physical_plan));
case P::PhysicalType::kTableGenerator:
return estimateCardinalityForTableGenerator(
std::static_pointer_cast<const P::TableGenerator>(physical_plan));
case P::PhysicalType::kHashJoin:
return estimateCardinalityForHashJoin(
std::static_pointer_cast<const P::HashJoin>(physical_plan));
case P::PhysicalType::kNestedLoopsJoin:
return estimateCardinalityForNestedLoopsJoin(
std::static_pointer_cast<const P::NestedLoopsJoin>(physical_plan));
case P::PhysicalType::kAggregate:
return estimateCardinalityForAggregate(
std::static_pointer_cast<const P::Aggregate>(physical_plan));
case P::PhysicalType::kSharedSubplanReference: {
const P::SharedSubplanReferencePtr shared_subplan_reference =
std::static_pointer_cast<const P::SharedSubplanReference>(physical_plan);
return estimateCardinality(
shared_subplans_[shared_subplan_reference->subplan_id()]);
}
default:
LOG(FATAL) << "Unsupported physical plan:" << physical_plan->toString();
}
}
P::PhysicalPtr ReduceGroupByAttributes::applyInternal(const P::PhysicalPtr &input) {
std::vector<P::PhysicalPtr> new_children;
for (const P::PhysicalPtr &child : input->children()) {
new_children.push_back(applyInternal(child));
}
if (new_children != input->children()) {
return applyToNode(input->copyWithNewChildren(new_children));
} else {
return applyToNode(input);
}
}
P::PhysicalPtr InjectJoinFilters::transformHashJoinToFilters(
const P::PhysicalPtr &input) const {
std::vector<P::PhysicalPtr> new_children;
for (const P::PhysicalPtr &child : input->children()) {
new_children.emplace_back(transformHashJoinToFilters(child));
}
P::HashJoinPtr hash_join;
if (P::SomeHashJoin::MatchesWithConditionalCast(input, &hash_join) &&
isTransformable(hash_join)) {
const bool is_anti_join =
hash_join->join_type() == P::HashJoin::JoinType::kLeftAntiJoin;
DCHECK_EQ(2u, new_children.size());
P::PhysicalPtr build_child = new_children[1];
E::PredicatePtr build_side_filter_predicate = nullptr;
P::SelectionPtr selection;
if (hash_join->build_predicate() == nullptr) {
if (P::SomeSelection::MatchesWithConditionalCast(build_child, &selection) &&
E::SubsetOfExpressions(hash_join->right_join_attributes(),
selection->input()->getOutputAttributes())) {
build_child = selection->input();
build_side_filter_predicate = selection->filter_predicate();
}
} else {
build_child = hash_join->right();
build_side_filter_predicate = hash_join->build_predicate();
}
return P::FilterJoin::Create(new_children[0],
build_child,
hash_join->left_join_attributes(),
hash_join->right_join_attributes(),
hash_join->project_expressions(),
build_side_filter_predicate,
is_anti_join,
hash_join->hasRepartition(),
hash_join->cloneOutputPartitionSchemeHeader());
}
if (input->children() != new_children) {
return input->copyWithNewChildren(new_children);
} else {
return input;
}
}
physical::PhysicalPtr InjectJoinFilters::pushDownFiltersInternal(
const physical::PhysicalPtr &probe_child,
const physical::PhysicalPtr &build_child,
const physical::FilterJoinPtr &filter_join) const {
switch (probe_child->getPhysicalType()) {
case P::PhysicalType::kAggregate: // Fall through
case P::PhysicalType::kHashJoin:
case P::PhysicalType::kSample:
case P::PhysicalType::kSelection:
case P::PhysicalType::kSort:
case P::PhysicalType::kWindowAggregate: {
DCHECK_GE(probe_child->getNumChildren(), 1u);
const P::PhysicalPtr child = probe_child->children()[0];
if (E::SubsetOfExpressions(filter_join->probe_attributes(),
child->getOutputAttributes())) {
const P::PhysicalPtr new_child =
pushDownFiltersInternal(child, build_child, filter_join);
if (new_child != child) {
std::vector<P::PhysicalPtr> new_children = probe_child->children();
new_children[0] = new_child;
return probe_child->copyWithNewChildren(new_children);
}
}
}
default:
break;
}
if (probe_child != filter_join->left()) {
// TODO(jianqiao): may need to update probe_attributes.
return P::FilterJoin::Create(probe_child,
build_child,
filter_join->probe_attributes(),
filter_join->build_attributes(),
E::ToNamedExpressions(probe_child->getOutputAttributes()),
filter_join->build_side_filter_predicate(),
filter_join->is_anti_join(),
filter_join->hasRepartition(),
filter_join->cloneOutputPartitionSchemeHeader());
} else {
return filter_join;
}
}
P::PhysicalPtr ReduceGroupByAttributes::apply(const P::PhysicalPtr &input) {
DCHECK(input->getPhysicalType() == P::PhysicalType::kTopLevelPlan);
cost_model_.reset(new cost::StarSchemaSimpleCostModel(
std::static_pointer_cast<const P::TopLevelPlan>(input)->shared_subplans()));
P::PhysicalPtr output = applyInternal(input);
if (output != input) {
output = PruneColumns().apply(output);
}
return output;
}
P::PhysicalPtr InjectJoinFilters::apply(const P::PhysicalPtr &input) {
DCHECK(input->getPhysicalType() == P::PhysicalType::kTopLevelPlan);
const P::TopLevelPlanPtr top_level_plan =
std::static_pointer_cast<const P::TopLevelPlan>(input);
cost_model_.reset(
new cost::StarSchemaSimpleCostModel(
top_level_plan->shared_subplans()));
lip_filter_configuration_.reset(new P::LIPFilterConfiguration());
// Step 1. Transform applicable HashJoin nodes to FilterJoin nodes.
P::PhysicalPtr output = transformHashJoinToFilters(input);
if (output == input) {
return input;
}
// Step 2. If the top level plan is a filter join, wrap it with a Selection
// to stabilize output columns.
output = wrapSelection(output);
// Step 3. Push down FilterJoin nodes to be evaluated early.
output = pushDownFilters(output);
// Step 4. Add Selection nodes for attaching the LIPFilters, if necessary.
output = addFilterAnchors(output, false);
// Step 5. Because of the pushdown of FilterJoin nodes, there are optimization
// opportunities for projecting columns early.
output = PruneColumns().apply(output);
// Step 6. For each FilterJoin node, attach its corresponding LIPFilter to
// proper nodes.
concretizeAsLIPFilters(output, nullptr);
if (!lip_filter_configuration_->getBuildInfoMap().empty() ||
!lip_filter_configuration_->getProbeInfoMap().empty()) {
output = std::static_pointer_cast<const P::TopLevelPlan>(output)
->copyWithLIPFilterConfiguration(
P::LIPFilterConfigurationPtr(lip_filter_configuration_.release()));
}
return output;
}
void InjectJoinFilters::concretizeAsLIPFilters(
const P::PhysicalPtr &input,
const P::PhysicalPtr &anchor_node) const {
switch (input->getPhysicalType()) {
case P::PhysicalType::kAggregate: {
const P::AggregatePtr &aggregate =
std::static_pointer_cast<const P::Aggregate>(input);
concretizeAsLIPFilters(aggregate->input(), aggregate);
break;
}
case P::PhysicalType::kSelection: {
const P::SelectionPtr &selection =
std::static_pointer_cast<const P::Selection>(input);
concretizeAsLIPFilters(selection->input(), selection);
break;
}
// Currently we disable the attachment of filters to HashJoin nodes. See the
// comments in InjectJoinFilters::addFilterAnchors().
/*
case P::PhysicalType::kHashJoin: {
const P::HashJoinPtr &hash_join =
std::static_pointer_cast<const P::HashJoin>(input);
concretizeAsLIPFilters(hash_join->left(), hash_join);
concretizeAsLIPFilters(hash_join->right(), nullptr);
break;
}
*/
case P::PhysicalType::kFilterJoin: {
const P::FilterJoinPtr &filter_join =
std::static_pointer_cast<const P::FilterJoin>(input);
DCHECK_EQ(1u, filter_join->build_attributes().size());
const E::AttributeReferencePtr &build_attr =
filter_join->build_attributes().front();
std::int64_t min_cpp_value;
std::int64_t max_cpp_value;
const bool has_exact_min_max_stats =
findExactMinMaxValuesForAttributeHelper(filter_join,
build_attr,
&min_cpp_value,
&max_cpp_value);
DCHECK(has_exact_min_max_stats);
DCHECK_GE(max_cpp_value, min_cpp_value);
DCHECK_LE(max_cpp_value - min_cpp_value, kMaxFilterSize);
CHECK(anchor_node != nullptr);
lip_filter_configuration_->addBuildInfo(
P::BitVectorExactFilterBuildInfo::Create(build_attr,
min_cpp_value,
max_cpp_value,
filter_join->is_anti_join()),
filter_join);
lip_filter_configuration_->addProbeInfo(
P::LIPFilterProbeInfo::Create(filter_join->probe_attributes().front(),
build_attr,
filter_join),
anchor_node);
concretizeAsLIPFilters(filter_join->left(), anchor_node);
concretizeAsLIPFilters(filter_join->right(), filter_join);
break;
}
default: {
for (const P::PhysicalPtr &child : input->children()) {
concretizeAsLIPFilters(child, nullptr);
}
}
}
}
P::PhysicalPtr ReduceGroupByAttributes::applyToNode(const P::PhysicalPtr &input) {
P::TableReferencePtr table_reference;
if (P::SomeTableReference::MatchesWithConditionalCast(input, &table_reference)) {
// Collect the attributes-to-TableReference mapping info.
for (const auto &attr : table_reference->attribute_list()) {
source_.emplace(attr->id(), std::make_pair(table_reference, attr));
}
return input;
}
P::AggregatePtr aggregate;
if (!P::SomeAggregate::MatchesWithConditionalCast(input, &aggregate) ||
aggregate->grouping_expressions().size() <= 1u) {
return input;
}
// Divide the group-by attributes into groups based on their source table.
std::map<P::TableReferencePtr, std::vector<E::AttributeReferencePtr>> table_attributes;
for (const auto &expr : aggregate->grouping_expressions()) {
const auto source_it = source_.find(expr->id());
if (source_it != source_.end()) {
table_attributes[source_it->second.first].emplace_back(source_it->second.second);
}
}
std::unordered_set<E::ExprId> erased_grouping_attr_ids;
std::vector<std::pair<P::TableReferencePtr, E::AttributeReferencePtr>> hoisted_tables;
// For each group (i.e. each source table), if it is profitable then we pull
// the table up the aggregation.
for (const auto &pair : table_attributes) {
const P::TableReferencePtr table = pair.first;
const std::vector<E::AttributeReferencePtr> &attributes = pair.second;
// TODO(jianqiao): find a cost-based metic instead of hard-coding the threshold
// number of group-by attributes.
if (attributes.size() <= FLAGS_reduce_group_by_attributes_threshold) {
continue;
}
std::vector<AttributeInfo> attr_infos;
for (const auto &attr : attributes) {
attr_infos.emplace_back(attr,
cost_model_->impliesUniqueAttributes(table, {attr}),
!attr->getValueType().isVariableLength(),
attr->getValueType().maximumByteLength());
}
std::vector<const AttributeInfo *> attr_info_refs;
for (const auto &info : attr_infos) {
attr_info_refs.emplace_back(&info);
}
std::sort(attr_info_refs.begin(),
attr_info_refs.end(),
AttributeInfo::IsBetterThan);
const AttributeInfo &best_candidate = *attr_info_refs.front();
if (!best_candidate.is_unique) {
// Cannot find a key attribute. Give up pulling this table up.
continue;
}
const E::AttributeReferencePtr key_attribute = best_candidate.attribute;
hoisted_tables.emplace_back(table, key_attribute);
for (const auto &attr : attributes) {
if (attr->id() != key_attribute->id()) {
erased_grouping_attr_ids.emplace(attr->id());
}
}
}
if (erased_grouping_attr_ids.empty()) {
return input;
}
// Reconstuct the Aggregate node with reduced group-by attributes and then
// construct HashJoin nodes on top of the Aggregate.
std::vector<E::NamedExpressionPtr> reduced_grouping_expressions;
for (const auto &expr : aggregate->grouping_expressions()) {
if (erased_grouping_attr_ids.find(expr->id()) == erased_grouping_attr_ids.end()) {
reduced_grouping_expressions.emplace_back(expr);
}
}
const P::AggregatePtr new_aggregate =
P::Aggregate::Create(aggregate->input(),
reduced_grouping_expressions,
aggregate->aggregate_expressions(),
aggregate->filter_predicate());
P::PhysicalPtr output = new_aggregate;
std::vector<E::NamedExpressionPtr> project_expressions =
E::ToNamedExpressions(output->getOutputAttributes());
for (const auto &pair : hoisted_tables) {
const P::TableReferencePtr &source_table = pair.first;
const E::AttributeReferencePtr &probe_attribute = pair.second;
E::AttributeReferencePtr build_attribute;
std::vector<E::AttributeReferencePtr> new_attribute_list;
for (const auto &attr : source_table->attribute_list()) {
if (attr->id() == probe_attribute->id()) {
build_attribute =
E::AttributeReference::Create(optimizer_context_->nextExprId(),
attr->attribute_name(),
attr->attribute_alias(),
attr->relation_name(),
attr->getValueType(),
E::AttributeReferenceScope::kLocal);
new_attribute_list.emplace_back(build_attribute);
} else {
new_attribute_list.emplace_back(attr);
project_expressions.emplace_back(attr);
}
}
DCHECK(build_attribute != nullptr);
const P::TableReferencePtr build_side_table =
P::TableReference::Create(source_table->relation(),
source_table->relation()->getName(),
new_attribute_list);
output = P::HashJoin::Create(output,
build_side_table,
{probe_attribute},
{build_attribute},
nullptr,
project_expressions,
P::HashJoin::JoinType::kInnerJoin);
}
return output;
}
bool OneToOne::generatePlan(const L::LogicalPtr &logical_input,
P::PhysicalPtr *physical_output) {
switch (logical_input->getLogicalType()) {
case L::LogicalType::kTopLevelPlan: {
const L::TopLevelPlanPtr top_level_plan = std::static_pointer_cast<const L::TopLevelPlan>(logical_input);
const P::PhysicalPtr main_physical_plan =
physical_mapper_->createOrGetPhysicalFromLogical(top_level_plan->plan());
std::vector<P::PhysicalPtr> shared_physical_subplans;
for (const L::LogicalPtr &shared_logical_subplan : top_level_plan->shared_subplans()) {
shared_physical_subplans.emplace_back(
physical_mapper_->createOrGetPhysicalFromLogical(shared_logical_subplan));
}
*physical_output = P::TopLevelPlan::Create(main_physical_plan,
shared_physical_subplans);
return true;
}
case L::LogicalType::kSharedSubplanReference: {
const L::SharedSubplanReferencePtr shared_subplan_reference =
std::static_pointer_cast<const L::SharedSubplanReference>(logical_input);
*physical_output = P::SharedSubplanReference::Create(shared_subplan_reference->subplan_id(),
shared_subplan_reference->referenced_attributes(),
shared_subplan_reference->output_attributes());
return true;
}
case L::LogicalType::kTableReference: {
const L::TableReferencePtr table_reference =
std::static_pointer_cast<const L::TableReference>(logical_input);
*physical_output = P::TableReference::Create(table_reference->catalog_relation(),
table_reference->relation_alias(),
table_reference->attribute_list());
return true;
}
case L::LogicalType::kCopyFrom: {
const L::CopyFromPtr copy_from =
std::static_pointer_cast<const L::CopyFrom>(logical_input);
*physical_output = P::CopyFrom::Create(
copy_from->catalog_relation(), copy_from->file_name(),
copy_from->column_delimiter(), copy_from->escape_strings());
return true;
}
case L::LogicalType::kCreateIndex: {
const L::CreateIndexPtr create_index =
std::static_pointer_cast<const L::CreateIndex>(logical_input);
*physical_output = P::CreateIndex::Create(physical_mapper_->createOrGetPhysicalFromLogical(
create_index->input()),
create_index->index_name(),
create_index->index_attributes(),
create_index->index_description());
return true;
}
case L::LogicalType::kCreateTable: {
const L::CreateTablePtr create_table =
std::static_pointer_cast<const L::CreateTable>(logical_input);
*physical_output = P::CreateTable::Create(create_table->relation_name(),
create_table->attributes(),
create_table->block_properties());
return true;
}
case L::LogicalType::kDeleteTuples: {
const L::DeleteTuplesPtr delete_tuples =
std::static_pointer_cast<const L::DeleteTuples>(logical_input);
*physical_output = P::DeleteTuples::Create(
physical_mapper_->createOrGetPhysicalFromLogical(delete_tuples->input()),
delete_tuples->predicate());
return true;
}
case L::LogicalType::kDropTable: {
const L::DropTablePtr drop_table =
std::static_pointer_cast<const L::DropTable>(logical_input);
*physical_output = P::DropTable::Create(drop_table->catalog_relation());
return true;
}
case L::LogicalType::kInsertSelection: {
const L::InsertSelectionPtr insert_selection =
std::static_pointer_cast<const L::InsertSelection>(logical_input);
*physical_output = P::InsertSelection::Create(
physical_mapper_->createOrGetPhysicalFromLogical(insert_selection->destination()),
physical_mapper_->createOrGetPhysicalFromLogical(insert_selection->selection()));
return true;
}
case L::LogicalType::kInsertTuple: {
const L::InsertTuplePtr insert_tuple =
std::static_pointer_cast<const L::InsertTuple>(logical_input);
*physical_output = P::InsertTuple::Create(
physical_mapper_->createOrGetPhysicalFromLogical(insert_tuple->input()),
insert_tuple->column_values());
return true;
}
case L::LogicalType::kSample: {
const L::SamplePtr sample =
std::static_pointer_cast<const L::Sample>(logical_input);
*physical_output = P::Sample::Create(
physical_mapper_->createOrGetPhysicalFromLogical(sample->input()),
sample->is_block_sample(),
sample->percentage());
return true;
}
case L::LogicalType::kSort: {
const L::Sort *sort =
static_cast<const L::Sort*>(logical_input.get());
const P::PhysicalPtr physical_input =
physical_mapper_->createOrGetPhysicalFromLogical(sort->input());
// Find non-sort attributes.
const std::vector<E::AttributeReferencePtr> input_attributes =
physical_input->getOutputAttributes();
E::UnorderedNamedExpressionSet sort_attributes_set(sort->sort_attributes().begin(),
sort->sort_attributes().end());
std::vector<E::AttributeReferencePtr> non_sort_attributes;
for (const E::AttributeReferencePtr &input_attribute : input_attributes) {
if (sort_attributes_set.find(input_attribute) == sort_attributes_set.end()) {
non_sort_attributes.emplace_back(input_attribute);
}
}
*physical_output = P::Sort::Create(
physical_mapper_->createOrGetPhysicalFromLogical(sort->input()),
sort->sort_attributes(),
non_sort_attributes,
sort->sort_ascending(),
sort->nulls_first_flags(),
sort->limit());
return true;
}
case L::LogicalType::kTableGenerator: {
const L::TableGeneratorPtr table_generator =
std::static_pointer_cast<const L::TableGenerator>(logical_input);
*physical_output = P::TableGenerator::Create(
table_generator->generator_function_handle(),
table_generator->table_alias(),
table_generator->attribute_list());
return true;
}
case L::LogicalType::kUpdateTable: {
const L::UpdateTablePtr update_table =
std::static_pointer_cast<const L::UpdateTable>(logical_input);
*physical_output = P::UpdateTable::Create(
physical_mapper_->createOrGetPhysicalFromLogical(update_table->input()),
update_table->assignees(),
update_table->assignment_expressions(),
update_table->predicate());
return true;
}
default:
return false;
}
}
std::string PlanVisualizer::visualize(const P::PhysicalPtr &input) {
DCHECK(input->getPhysicalType() == P::PhysicalType::kTopLevelPlan);
const P::TopLevelPlanPtr top_level_plan =
std::static_pointer_cast<const P::TopLevelPlan>(input);
cost_model_.reset(
new C::StarSchemaSimpleCostModel(
top_level_plan->shared_subplans()));
lip_filter_conf_ = top_level_plan->lip_filter_configuration();
color_map_["TableReference"] = "skyblue";
color_map_["Selection"] = "#90EE90";
color_map_["FilterJoin"] = "pink";
color_map_["FilterJoin(Anti)"] = "pink";
color_map_["HashJoin"] = "red";
color_map_["HashLeftOuterJoin"] = "orange";
color_map_["HashLeftSemiJoin"] = "orange";
color_map_["HashLeftAntiJoin"] = "orange";
visit(input);
// Format output graph
std::ostringstream graph_oss;
graph_oss << "digraph g {\n";
graph_oss << " rankdir=BT\n";
graph_oss << " node [penwidth=2]\n";
graph_oss << " edge [fontsize=16 fontcolor=gray penwidth=2]\n\n";
// Format nodes
for (const NodeInfo &node_info : nodes_) {
graph_oss << " " << node_info.id << " [";
if (!node_info.labels.empty()) {
graph_oss << "label=\""
<< EscapeSpecialChars(JoinToString(node_info.labels, " "))
<< "\"";
}
if (!node_info.color.empty()) {
graph_oss << " style=filled fillcolor=\"" << node_info.color << "\"";
}
graph_oss << "]\n";
}
graph_oss << "\n";
// Format edges
for (const EdgeInfo &edge_info : edges_) {
graph_oss << " " << edge_info.src_node_id << " -> "
<< edge_info.dst_node_id << " [";
if (edge_info.dashed) {
graph_oss << "style=dashed ";
}
if (!edge_info.labels.empty()) {
graph_oss << "label=\""
<< EscapeSpecialChars(JoinToString(edge_info.labels, " "))
<< "\"";
}
graph_oss << "]\n";
}
graph_oss << "}\n";
return graph_oss.str();
}
void PlanVisualizer::visit(const P::PhysicalPtr &input) {
int node_id = ++id_counter_;
node_id_map_.emplace(input, node_id);
std::set<E::ExprId> referenced_ids;
for (const auto &attr : input->getReferencedAttributes()) {
referenced_ids.emplace(attr->id());
}
for (const auto &child : input->children()) {
visit(child);
int child_id = node_id_map_[child];
edges_.emplace_back(EdgeInfo());
EdgeInfo &edge_info = edges_.back();
edge_info.src_node_id = child_id;
edge_info.dst_node_id = node_id;
edge_info.dashed = false;
if ((input->getPhysicalType() == P::PhysicalType::kHashJoin ||
input->getPhysicalType() == P::PhysicalType::kFilterJoin) &&
child == input->children()[1]) {
edge_info.dashed = true;
}
for (const auto &attr : child->getOutputAttributes()) {
if (referenced_ids.find(attr->id()) != referenced_ids.end()) {
edge_info.labels.emplace_back(attr->attribute_alias());
}
}
}
nodes_.emplace_back(NodeInfo());
NodeInfo &node_info = nodes_.back();
node_info.id = node_id;
if (color_map_.find(input->getName()) != color_map_.end()) {
node_info.color = color_map_[input->getName()];
}
switch (input->getPhysicalType()) {
case P::PhysicalType::kTableReference: {
const P::TableReferencePtr table_reference =
std::static_pointer_cast<const P::TableReference>(input);
node_info.labels.emplace_back(table_reference->relation()->getName());
break;
}
case P::PhysicalType::kHashJoin: {
const P::HashJoinPtr hash_join =
std::static_pointer_cast<const P::HashJoin>(input);
node_info.labels.emplace_back(input->getName());
const auto &left_attributes = hash_join->left_join_attributes();
const auto &right_attributes = hash_join->right_join_attributes();
for (std::size_t i = 0; i < left_attributes.size(); ++i) {
node_info.labels.emplace_back(
left_attributes[i]->attribute_alias() + " = " + right_attributes[i]->attribute_alias());
}
break;
}
case P::PhysicalType::kFilterJoin: {
const P::FilterJoinPtr filter_join =
std::static_pointer_cast<const P::FilterJoin>(input);
node_info.labels.emplace_back(input->getName());
const auto &probe_attributes = filter_join->probe_attributes();
const auto &build_attributes = filter_join->build_attributes();
for (std::size_t i = 0; i < probe_attributes.size(); ++i) {
node_info.labels.emplace_back(
probe_attributes[i]->attribute_alias() + " = " +
build_attributes[i]->attribute_alias());
}
break;
}
default: {
node_info.labels.emplace_back(input->getName());
break;
}
}
const P::PartitionSchemeHeader *partition_scheme_header = input->getOutputPartitionSchemeHeader();
if (partition_scheme_header) {
node_info.labels.emplace_back(partition_scheme_header->toString());
}
if (lip_filter_conf_ != nullptr) {
const auto &build_filters = lip_filter_conf_->getBuildInfoMap();
const auto build_it = build_filters.find(input);
if (build_it != build_filters.end()) {
for (const auto &build_info : build_it->second) {
node_info.labels.emplace_back(
std::string("[LIP build] ") + build_info->build_attribute()->attribute_alias());
}
}
const auto &probe_filters = lip_filter_conf_->getProbeInfoMap();
const auto probe_it = probe_filters.find(input);
if (probe_it != probe_filters.end()) {
for (const auto &probe_info : probe_it->second) {
node_info.labels.emplace_back(
std::string("[LIP probe] ") + probe_info->probe_attribute()->attribute_alias());
}
}
}
try {
const std::size_t estimated_cardinality = cost_model_->estimateCardinality(input);
const double estimated_selectivity = cost_model_->estimateSelectivity(input);
node_info.labels.emplace_back(
"est. # = " + std::to_string(estimated_cardinality));
node_info.labels.emplace_back(
"est. Selectivity = " + std::to_string(estimated_selectivity));
} catch (const std::exception &e) {
// NOTE(jianqiao): CostModel::estimateCardinality() may throw UnsupportedPhysicalPlan
// exception for some type of physical nodes such as CreateTable.
// In this case, we omit the node's cardinality/selectivity information.
}
}