-
Notifications
You must be signed in to change notification settings - Fork 3.4k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[enhancement](Nereids) two phase read for topn
- Loading branch information
Showing
14 changed files
with
246 additions
and
32 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
144 changes: 144 additions & 0 deletions
144
fe/fe-core/src/main/java/org/apache/doris/nereids/processor/post/TwoPhaseReadOpt.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,144 @@ | ||
| // 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.processor.post; | ||
|
|
||
| import org.apache.doris.nereids.CascadesContext; | ||
| import org.apache.doris.nereids.properties.OrderKey; | ||
| import org.apache.doris.nereids.trees.expressions.Alias; | ||
| import org.apache.doris.nereids.trees.expressions.ExprId; | ||
| import org.apache.doris.nereids.trees.expressions.Expression; | ||
| import org.apache.doris.nereids.trees.expressions.NamedExpression; | ||
| import org.apache.doris.nereids.trees.expressions.Slot; | ||
| import org.apache.doris.nereids.trees.plans.Plan; | ||
| import org.apache.doris.nereids.trees.plans.SortPhase; | ||
| import org.apache.doris.nereids.trees.plans.algebra.Filter; | ||
| import org.apache.doris.nereids.trees.plans.algebra.Project; | ||
| import org.apache.doris.nereids.trees.plans.physical.PhysicalFilter; | ||
| import org.apache.doris.nereids.trees.plans.physical.PhysicalOlapScan; | ||
| import org.apache.doris.nereids.trees.plans.physical.PhysicalProject; | ||
| import org.apache.doris.nereids.trees.plans.physical.PhysicalTopN; | ||
| import org.apache.doris.qe.ConnectContext; | ||
|
|
||
| import com.google.common.collect.Maps; | ||
| import com.google.common.collect.Sets; | ||
|
|
||
| import java.util.Map; | ||
| import java.util.Objects; | ||
| import java.util.Set; | ||
|
|
||
| /** | ||
| * two phase read opt | ||
| * refer to: | ||
| * https://github.com/apache/doris/pull/15642 | ||
| * https://github.com/apache/doris/pull/16460 | ||
| * https://github.com/apache/doris/pull/16848 | ||
| */ | ||
|
|
||
| public class TwoPhaseReadOpt extends PlanPostProcessor { | ||
|
|
||
| @Override | ||
| public PhysicalTopN visitPhysicalTopN(PhysicalTopN<? extends Plan> topN, CascadesContext ctx) { | ||
| topN.child().accept(this, ctx); | ||
| Plan child = topN.child(); | ||
| if (topN.getSortPhase() != SortPhase.LOCAL_SORT) { | ||
| return topN; | ||
| } | ||
| if (topN.getOrderKeys().isEmpty()) { | ||
| return topN; | ||
| } | ||
|
|
||
| // topn opt | ||
| long topNOptLimitThreshold = getTopNOptLimitThreshold(); | ||
| if (topN.getLimit() > topNOptLimitThreshold) { | ||
| return topN; | ||
| } | ||
| if (!topN.getOrderKeys().stream().map(OrderKey::getExpr).allMatch(Expression::isColumnFromTable)) { | ||
| return topN; | ||
| } | ||
|
|
||
| PhysicalOlapScan olapScan; | ||
| PhysicalProject<Plan> project = null; | ||
| PhysicalFilter<Plan> filter = null; | ||
| while (child instanceof Project || child instanceof Filter) { | ||
| if (child instanceof Filter) { | ||
| filter = (PhysicalFilter<Plan>) child; | ||
| } | ||
| if (child instanceof Project) { | ||
| project = (PhysicalProject<Plan>) child; | ||
| // TODO: remove this after fix two phase read on project core | ||
| return topN; | ||
| } | ||
| child = child.child(0); | ||
| } | ||
| if (!(child instanceof PhysicalOlapScan)) { | ||
| return topN; | ||
| } | ||
| olapScan = (PhysicalOlapScan) child; | ||
|
|
||
| // all order key must column from table | ||
| if (!olapScan.getTable().getEnableLightSchemaChange()) { | ||
| return topN; | ||
| } | ||
|
|
||
| Map<ExprId, ExprId> projectRevertedMap = Maps.newHashMap(); | ||
| if (project != null) { | ||
| for (Expression e : project.getProjects()) { | ||
| if (e.isSlot()) { | ||
| Slot slot = (Slot) e; | ||
| projectRevertedMap.put(slot.getExprId(), slot.getExprId()); | ||
| } else if (e instanceof Alias) { | ||
| Alias alias = (Alias) e; | ||
| if (alias.child().isSlot()) { | ||
| Slot slot = (Slot) alias.child(); | ||
| projectRevertedMap.put(alias.getExprId(), slot.getExprId()); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| Set<ExprId> deferredMaterializedExprIds = Sets.newHashSet(olapScan.getOutputExprIdSet()); | ||
| if (filter != null) { | ||
| filter.getConjuncts().forEach(e -> deferredMaterializedExprIds.removeAll(e.getInputSlotExprIds())); | ||
| } | ||
| topN.getOrderKeys().stream() | ||
| .map(OrderKey::getExpr) | ||
| .map(Slot.class::cast) | ||
| .map(NamedExpression::getExprId) | ||
| .map(projectRevertedMap::get) | ||
| .filter(Objects::nonNull) | ||
| .forEach(deferredMaterializedExprIds::remove); | ||
| topN.getOrderKeys().stream() | ||
| .map(OrderKey::getExpr) | ||
| .map(Slot.class::cast) | ||
| .map(NamedExpression::getExprId) | ||
| .forEach(deferredMaterializedExprIds::remove); | ||
| topN.setMutableState(PhysicalTopN.TWO_PHASE_READ_OPT, true); | ||
| olapScan.setMutableState(PhysicalOlapScan.DEFERRED_MATERIALIZED_SLOTS, deferredMaterializedExprIds); | ||
|
|
||
| return topN; | ||
| } | ||
|
|
||
| private long getTopNOptLimitThreshold() { | ||
| if (ConnectContext.get() != null && ConnectContext.get().getSessionVariable() != null) { | ||
| if (!ConnectContext.get().getSessionVariable().enableTwoPhaseReadOpt) { | ||
| return -1; | ||
| } | ||
| return ConnectContext.get().getSessionVariable().topnOptLimitThreshold; | ||
| } | ||
| return -1; | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.