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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2022/10/18 13:01:49 UTC
[GitHub] [doris] jackwener opened a new pull request, #13449: [WIP-feature](Nereids): join reorder greedy and Graph for join cluster.
jackwener opened a new pull request, #13449:
URL: https://github.com/apache/doris/pull/13449
# Proposed changes
Issue Number: close #xxx
## Problem summary
Describe your changes.
## Checklist(Required)
1. Does it affect the original behavior:
- [x] Yes
- [ ] No
- [ ] I don't know
2. Has unit tests been added:
- [x] Yes
- [ ] No
- [ ] No Need
3. Has document been added or modified:
- [ ] Yes
- [ ] No
- [x] No Need
4. Does it need to update dependencies:
- [ ] Yes
- [x] No
5. Are there any changes that cannot be rolled back:
- [ ] Yes (If Yes, please explain WHY)
- [x] No
## Further comments
If this is a relatively large or complex change, kick off the discussion at [dev@doris.apache.org](mailto:dev@doris.apache.org) by explaining why you chose the solution you did and what alternatives you considered, etc...
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[GitHub] [doris] github-actions[bot] commented on pull request #13449: [feature](Nereids): HyperGraph data struct.
Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #13449:
URL: https://github.com/apache/doris/pull/13449#issuecomment-1289944530
PR approved by anyone and no changes requested.
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[GitHub] [doris] jackwener closed pull request #13449: [feature](Nereids): HyperGraph data struct.
Posted by GitBox <gi...@apache.org>.
jackwener closed pull request #13449: [feature](Nereids): HyperGraph data struct.
URL: https://github.com/apache/doris/pull/13449
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[GitHub] [doris] XieJiann commented on a diff in pull request #13449: [WIP-feature](Nereids): join reorder greedy and Graph for join cluster.
Posted by GitBox <gi...@apache.org>.
XieJiann commented on code in PR #13449:
URL: https://github.com/apache/doris/pull/13449#discussion_r998881394
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/join/JoinReorderGreedy.java:
##########
@@ -0,0 +1,136 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.nereids.rules.join;
+
+import org.apache.doris.nereids.trees.plans.Plan;
+import org.apache.doris.nereids.trees.plans.logical.LogicalJoin;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * Greedy Heuristics Join Reorder.
+ */
+public class JoinReorderGreedy {
+
+ HyperGraph graph;
+
+ public JoinReorderGreedy(HyperGraph graph) {
+ this.graph = graph;
+ }
+
+ /**
+ * A Group Plan which contains multiple plans.
+ */
+ public class PlanGroupSet {
+ List<Integer> nodes = Lists.newArrayList();
+ BitSet nodesBitSet = new BitSet(32);
+ List<List<Integer>> edges = Lists.newArrayList();
+ double lowestCost = Double.MAX_VALUE;
+ long rowCount = -1;
+
+ public PlanGroupSet(Integer firstInput) {
+ this.nodes.add(firstInput);
+ this.nodesBitSet.set(firstInput);
+ }
+
+ public void addPlan(int newPlan, double lowestCost) {
+ this.edges.add(graph.findEdges(nodesBitSet, newPlan));
+ this.nodes.add(newPlan);
+ this.nodesBitSet.set(newPlan);
+ this.lowestCost = lowestCost;
+ }
+
+ /**
+ * Convert to Plan tree.
+ */
+ public Plan toPlan() {
+ Plan left;
+ left = graph.plan(nodes.get(0));
+ for (int i = 1; i < nodes.size(); i++) {
+ int rightIndex = nodes.get(i);
+ List<Integer> edgeIndex = edges.get(i - 1);
+ left = new LogicalJoin<>(
+ graph.joinTypes(edgeIndex.get(0)),
+ graph.conditions(edgeIndex),
+ left,
+ graph.plan(rightIndex)
+ );
+ }
+
+ return left;
+ }
+ }
+
+ /**
+ * do greedy.
+ */
+ public PlanGroupSet greedy() {
+ List<PlanGroupSet> result = new ArrayList<>(graph.nodes().size());
+ for (int i = 0; i < graph.nodes().size(); i++) {
+ // i as starting left plannode.
+ // For each starting left plannode, do greedy selection。
+ PlanGroupSet leftPlanGroupSet = new PlanGroupSet(i);
+ result.add(leftPlanGroupSet);
+
+ findLowestCostRight(leftPlanGroupSet);
+ }
+
+ return result.stream()
+ .min(Comparator.comparingDouble(a -> a.lowestCost))
+ .orElseThrow(() -> new RuntimeException("don't exist best plan."));
+ }
+
+ private void findLowestCostRight(PlanGroupSet leftPlans) {
+ if (leftPlans.nodes.size() == graph.nodes().size()) {
+ return;
+ }
+ BitSet rightCandidates = leftPlans.nodes.stream()
+ .map(left -> graph.nodes().get(left).simpleNeighborhood)
+ .reduce(new BitSet(), (lhs, rhs) -> {
+ lhs.or(rhs);
+ return lhs;
+ });
+ rightCandidates.andNot(leftPlans.nodesBitSet);
+
+ int right = -1;
+ double lowestCost = Double.MAX_VALUE;
+
+ for (int rightCandidate = rightCandidates.nextSetBit(0); rightCandidate != -1;
+ rightCandidate = rightCandidates.nextSetBit(rightCandidate + 1)) {
+ double cost = getCost(leftPlans, right);
+ if (cost <= lowestCost) {
+ right = rightCandidate;
+ }
Review Comment:
We can stop this recursion if the cost is greater than the cost of previous PlanGroupSet
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[GitHub] [doris] github-actions[bot] commented on pull request #13449: [feature](Nereids): HyperGraph data struct.
Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #13449:
URL: https://github.com/apache/doris/pull/13449#issuecomment-1289944504
PR approved by at least one committer and no changes requested.
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[GitHub] [doris] XieJiann commented on a diff in pull request #13449: [WIP-feature](Nereids): join reorder greedy and Graph for join cluster.
Posted by GitBox <gi...@apache.org>.
XieJiann commented on code in PR #13449:
URL: https://github.com/apache/doris/pull/13449#discussion_r998881394
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/join/JoinReorderGreedy.java:
##########
@@ -0,0 +1,136 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.nereids.rules.join;
+
+import org.apache.doris.nereids.trees.plans.Plan;
+import org.apache.doris.nereids.trees.plans.logical.LogicalJoin;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * Greedy Heuristics Join Reorder.
+ */
+public class JoinReorderGreedy {
+
+ HyperGraph graph;
+
+ public JoinReorderGreedy(HyperGraph graph) {
+ this.graph = graph;
+ }
+
+ /**
+ * A Group Plan which contains multiple plans.
+ */
+ public class PlanGroupSet {
+ List<Integer> nodes = Lists.newArrayList();
+ BitSet nodesBitSet = new BitSet(32);
+ List<List<Integer>> edges = Lists.newArrayList();
+ double lowestCost = Double.MAX_VALUE;
+ long rowCount = -1;
+
+ public PlanGroupSet(Integer firstInput) {
+ this.nodes.add(firstInput);
+ this.nodesBitSet.set(firstInput);
+ }
+
+ public void addPlan(int newPlan, double lowestCost) {
+ this.edges.add(graph.findEdges(nodesBitSet, newPlan));
+ this.nodes.add(newPlan);
+ this.nodesBitSet.set(newPlan);
+ this.lowestCost = lowestCost;
+ }
+
+ /**
+ * Convert to Plan tree.
+ */
+ public Plan toPlan() {
+ Plan left;
+ left = graph.plan(nodes.get(0));
+ for (int i = 1; i < nodes.size(); i++) {
+ int rightIndex = nodes.get(i);
+ List<Integer> edgeIndex = edges.get(i - 1);
+ left = new LogicalJoin<>(
+ graph.joinTypes(edgeIndex.get(0)),
+ graph.conditions(edgeIndex),
+ left,
+ graph.plan(rightIndex)
+ );
+ }
+
+ return left;
+ }
+ }
+
+ /**
+ * do greedy.
+ */
+ public PlanGroupSet greedy() {
+ List<PlanGroupSet> result = new ArrayList<>(graph.nodes().size());
+ for (int i = 0; i < graph.nodes().size(); i++) {
+ // i as starting left plannode.
+ // For each starting left plannode, do greedy selection。
+ PlanGroupSet leftPlanGroupSet = new PlanGroupSet(i);
+ result.add(leftPlanGroupSet);
+
+ findLowestCostRight(leftPlanGroupSet);
+ }
+
+ return result.stream()
+ .min(Comparator.comparingDouble(a -> a.lowestCost))
+ .orElseThrow(() -> new RuntimeException("don't exist best plan."));
+ }
+
+ private void findLowestCostRight(PlanGroupSet leftPlans) {
+ if (leftPlans.nodes.size() == graph.nodes().size()) {
+ return;
+ }
+ BitSet rightCandidates = leftPlans.nodes.stream()
+ .map(left -> graph.nodes().get(left).simpleNeighborhood)
+ .reduce(new BitSet(), (lhs, rhs) -> {
+ lhs.or(rhs);
+ return lhs;
+ });
+ rightCandidates.andNot(leftPlans.nodesBitSet);
+
+ int right = -1;
+ double lowestCost = Double.MAX_VALUE;
+
+ for (int rightCandidate = rightCandidates.nextSetBit(0); rightCandidate != -1;
+ rightCandidate = rightCandidates.nextSetBit(rightCandidate + 1)) {
+ double cost = getCost(leftPlans, right);
+ if (cost <= lowestCost) {
+ right = rightCandidate;
+ }
Review Comment:
We can stop this recursion if the cost is greater than the lower cost of previous PlanGroupSet
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[GitHub] [doris] XieJiann commented on a diff in pull request #13449: [WIP-feature](Nereids): join reorder greedy and Graph for join cluster.
Posted by GitBox <gi...@apache.org>.
XieJiann commented on code in PR #13449:
URL: https://github.com/apache/doris/pull/13449#discussion_r998881394
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/join/JoinReorderGreedy.java:
##########
@@ -0,0 +1,136 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.nereids.rules.join;
+
+import org.apache.doris.nereids.trees.plans.Plan;
+import org.apache.doris.nereids.trees.plans.logical.LogicalJoin;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * Greedy Heuristics Join Reorder.
+ */
+public class JoinReorderGreedy {
+
+ HyperGraph graph;
+
+ public JoinReorderGreedy(HyperGraph graph) {
+ this.graph = graph;
+ }
+
+ /**
+ * A Group Plan which contains multiple plans.
+ */
+ public class PlanGroupSet {
+ List<Integer> nodes = Lists.newArrayList();
+ BitSet nodesBitSet = new BitSet(32);
+ List<List<Integer>> edges = Lists.newArrayList();
+ double lowestCost = Double.MAX_VALUE;
+ long rowCount = -1;
+
+ public PlanGroupSet(Integer firstInput) {
+ this.nodes.add(firstInput);
+ this.nodesBitSet.set(firstInput);
+ }
+
+ public void addPlan(int newPlan, double lowestCost) {
+ this.edges.add(graph.findEdges(nodesBitSet, newPlan));
+ this.nodes.add(newPlan);
+ this.nodesBitSet.set(newPlan);
+ this.lowestCost = lowestCost;
+ }
+
+ /**
+ * Convert to Plan tree.
+ */
+ public Plan toPlan() {
+ Plan left;
+ left = graph.plan(nodes.get(0));
+ for (int i = 1; i < nodes.size(); i++) {
+ int rightIndex = nodes.get(i);
+ List<Integer> edgeIndex = edges.get(i - 1);
+ left = new LogicalJoin<>(
+ graph.joinTypes(edgeIndex.get(0)),
+ graph.conditions(edgeIndex),
+ left,
+ graph.plan(rightIndex)
+ );
+ }
+
+ return left;
+ }
+ }
+
+ /**
+ * do greedy.
+ */
+ public PlanGroupSet greedy() {
+ List<PlanGroupSet> result = new ArrayList<>(graph.nodes().size());
+ for (int i = 0; i < graph.nodes().size(); i++) {
+ // i as starting left plannode.
+ // For each starting left plannode, do greedy selection。
+ PlanGroupSet leftPlanGroupSet = new PlanGroupSet(i);
+ result.add(leftPlanGroupSet);
+
+ findLowestCostRight(leftPlanGroupSet);
+ }
+
+ return result.stream()
+ .min(Comparator.comparingDouble(a -> a.lowestCost))
+ .orElseThrow(() -> new RuntimeException("don't exist best plan."));
+ }
+
+ private void findLowestCostRight(PlanGroupSet leftPlans) {
+ if (leftPlans.nodes.size() == graph.nodes().size()) {
+ return;
+ }
+ BitSet rightCandidates = leftPlans.nodes.stream()
+ .map(left -> graph.nodes().get(left).simpleNeighborhood)
+ .reduce(new BitSet(), (lhs, rhs) -> {
+ lhs.or(rhs);
+ return lhs;
+ });
+ rightCandidates.andNot(leftPlans.nodesBitSet);
+
+ int right = -1;
+ double lowestCost = Double.MAX_VALUE;
+
+ for (int rightCandidate = rightCandidates.nextSetBit(0); rightCandidate != -1;
+ rightCandidate = rightCandidates.nextSetBit(rightCandidate + 1)) {
+ double cost = getCost(leftPlans, right);
+ if (cost <= lowestCost) {
+ right = rightCandidate;
+ }
Review Comment:
We can stop this recursion if the cost is greater than the cost of previous plan in PlanGroupSet
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[GitHub] [doris] hello-stephen commented on pull request #13449: [feature](Nereids): HyperGraph data struct.
Posted by GitBox <gi...@apache.org>.
hello-stephen commented on PR #13449:
URL: https://github.com/apache/doris/pull/13449#issuecomment-1289219335
TeamCity pipeline, clickbench performance test result:
the sum of best hot time: 40.65 seconds
load time: 591 seconds
storage size: 17154768746 Bytes
https://doris-community-test-1308700295.cos.ap-hongkong.myqcloud.com/tmp/20221024233420_clickbench_pr_33271.html
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[GitHub] [doris] jackwener commented on a diff in pull request #13449: [WIP-feature](Nereids): join reorder greedy and Graph for join cluster.
Posted by GitBox <gi...@apache.org>.
jackwener commented on code in PR #13449:
URL: https://github.com/apache/doris/pull/13449#discussion_r1000079412
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/join/JoinReorderGreedy.java:
##########
@@ -0,0 +1,136 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.nereids.rules.join;
+
+import org.apache.doris.nereids.trees.plans.Plan;
+import org.apache.doris.nereids.trees.plans.logical.LogicalJoin;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * Greedy Heuristics Join Reorder.
+ */
+public class JoinReorderGreedy {
+
+ HyperGraph graph;
+
+ public JoinReorderGreedy(HyperGraph graph) {
+ this.graph = graph;
+ }
+
+ /**
+ * A Group Plan which contains multiple plans.
+ */
+ public class PlanGroupSet {
+ List<Integer> nodes = Lists.newArrayList();
+ BitSet nodesBitSet = new BitSet(32);
+ List<List<Integer>> edges = Lists.newArrayList();
+ double lowestCost = Double.MAX_VALUE;
+ long rowCount = -1;
+
+ public PlanGroupSet(Integer firstInput) {
+ this.nodes.add(firstInput);
+ this.nodesBitSet.set(firstInput);
+ }
+
+ public void addPlan(int newPlan, double lowestCost) {
+ this.edges.add(graph.findEdges(nodesBitSet, newPlan));
+ this.nodes.add(newPlan);
+ this.nodesBitSet.set(newPlan);
+ this.lowestCost = lowestCost;
+ }
+
+ /**
+ * Convert to Plan tree.
+ */
+ public Plan toPlan() {
+ Plan left;
+ left = graph.plan(nodes.get(0));
+ for (int i = 1; i < nodes.size(); i++) {
+ int rightIndex = nodes.get(i);
+ List<Integer> edgeIndex = edges.get(i - 1);
+ left = new LogicalJoin<>(
+ graph.joinTypes(edgeIndex.get(0)),
+ graph.conditions(edgeIndex),
+ left,
+ graph.plan(rightIndex)
+ );
+ }
+
+ return left;
+ }
+ }
+
+ /**
+ * do greedy.
+ */
+ public PlanGroupSet greedy() {
+ List<PlanGroupSet> result = new ArrayList<>(graph.nodes().size());
+ for (int i = 0; i < graph.nodes().size(); i++) {
+ // i as starting left plannode.
+ // For each starting left plannode, do greedy selection。
+ PlanGroupSet leftPlanGroupSet = new PlanGroupSet(i);
+ result.add(leftPlanGroupSet);
+
+ findLowestCostRight(leftPlanGroupSet);
+ }
+
+ return result.stream()
+ .min(Comparator.comparingDouble(a -> a.lowestCost))
+ .orElseThrow(() -> new RuntimeException("don't exist best plan."));
+ }
+
+ private void findLowestCostRight(PlanGroupSet leftPlans) {
+ if (leftPlans.nodes.size() == graph.nodes().size()) {
+ return;
+ }
+ BitSet rightCandidates = leftPlans.nodes.stream()
+ .map(left -> graph.nodes().get(left).simpleNeighborhood)
+ .reduce(new BitSet(), (lhs, rhs) -> {
+ lhs.or(rhs);
+ return lhs;
+ });
+ rightCandidates.andNot(leftPlans.nodesBitSet);
+
+ int right = -1;
+ double lowestCost = Double.MAX_VALUE;
+
+ for (int rightCandidate = rightCandidates.nextSetBit(0); rightCandidate != -1;
+ rightCandidate = rightCandidates.nextSetBit(rightCandidate + 1)) {
+ double cost = getCost(leftPlans, right);
+ if (cost <= lowestCost) {
+ right = rightCandidate;
+ }
Review Comment:
It's just children compare children, no means that whole plans.
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