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[EMR] Support fallback whole stage according to the number of window …
…sort in stage
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135 changes: 135 additions & 0 deletions
135
...strait/src/main/scala/org/apache/gluten/extension/columnar/WindowSortFallbackPolicy.scala
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| @@ -0,0 +1,135 @@ | ||
| /* | ||
| * 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.gluten.extension.columnar | ||
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|
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| import org.apache.gluten.GlutenConfig | ||
| import org.apache.gluten.execution.{BroadcastHashJoinExecTransformerBase, SortExecTransformer, WindowExecTransformer} | ||
| import org.apache.gluten.extension.columnar.heuristic.FallbackNode | ||
| import org.apache.gluten.extension.columnar.transition.{ColumnarToRowLike, Transitions} | ||
|
|
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| import org.apache.spark.sql.catalyst.rules.Rule | ||
| import org.apache.spark.sql.execution._ | ||
| import org.apache.spark.sql.execution.adaptive.{AdaptiveSparkPlanExec, BroadcastQueryStageExec, QueryStageExec} | ||
| import org.apache.spark.sql.execution.command.ExecutedCommandExec | ||
| import org.apache.spark.sql.execution.exchange.Exchange | ||
|
|
||
| /** | ||
| * @param isAdaptiveContext | ||
| * If is inside AQE | ||
| * @param originalPlan | ||
| * The vanilla SparkPlan without apply gluten transform rules | ||
| */ | ||
| case class WindowSortFallbackPolicy(isAdaptiveContext: Boolean, originalPlan: SparkPlan) | ||
| extends Rule[SparkPlan] { | ||
|
|
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| private def getWindowSortCount(plan: SparkPlan): Int = { | ||
| var windowSortCount = 0 | ||
| def countFallbackInternal(plan: SparkPlan): Unit = { | ||
| plan match { | ||
| case _: QueryStageExec => // Another stage. | ||
| case _: CommandResultExec | _: ExecutedCommandExec => // ignore | ||
| // we plan exchange to columnar exchange in columnar rules and the exchange does not | ||
| // support columnar, so the output columnar is always false in AQE postStageCreationRules | ||
| case ColumnarToRowLike(s: Exchange) if isAdaptiveContext => | ||
| countFallbackInternal(s) | ||
| case _ @WindowExecTransformer(_, _, _, s: SortExecTransformer) => | ||
| windowSortCount += 1 | ||
| countFallbackInternal(s.child) | ||
| case p => p.children.foreach(countFallbackInternal) | ||
| } | ||
| } | ||
| countFallbackInternal(plan) | ||
| windowSortCount | ||
| } | ||
|
|
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| private def hasColumnarBroadcastExchangeWithJoin(plan: SparkPlan): Boolean = { | ||
| def isColumnarBroadcastExchange(p: SparkPlan): Boolean = p match { | ||
| case BroadcastQueryStageExec(_, _: ColumnarBroadcastExchangeExec, _) => true | ||
| case _ => false | ||
| } | ||
|
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| plan.find { | ||
| case j: BroadcastHashJoinExecTransformerBase | ||
| if isColumnarBroadcastExchange(j.left) || | ||
| isColumnarBroadcastExchange(j.right) => | ||
| true | ||
| case _ => false | ||
| }.isDefined | ||
| } | ||
|
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| private def fallback(plan: SparkPlan): FallbackInfo = { | ||
| val fallbackThreshold = if (isAdaptiveContext) { | ||
| GlutenConfig.getConf.wholeStageWindowSortFallbackThreshold | ||
| } else if (plan.find(_.isInstanceOf[AdaptiveSparkPlanExec]).isDefined) { | ||
| // if we are here, that means we are now at `QueryExecution.preparations` and | ||
| // AQE is actually not applied. We do nothing for this case, and later in | ||
| // AQE we can check `wholeStageFallbackThreshold`. | ||
| return FallbackInfo.DO_NOT_FALLBACK() | ||
| } else { | ||
| // AQE is not applied, so we use the whole query threshold to check if should fallback | ||
| GlutenConfig.getConf.queryFallbackThreshold | ||
| } | ||
| if (fallbackThreshold < 0) { | ||
| return FallbackInfo.DO_NOT_FALLBACK() | ||
| } | ||
|
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| // not safe to fallback row-based BHJ as the broadcast exchange is already columnar | ||
| if (hasColumnarBroadcastExchangeWithJoin(plan)) { | ||
| return FallbackInfo.DO_NOT_FALLBACK() | ||
| } | ||
|
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| val windowSortCount = getWindowSortCount(plan) | ||
|
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| if (windowSortCount >= fallbackThreshold) { | ||
| FallbackInfo( | ||
| Some( | ||
| s"Sort Window Fallback policy is taking effect, Sort Window count: $windowSortCount, " + | ||
| s"threshold: $fallbackThreshold"), | ||
| windowSortCount | ||
| ) | ||
| } else { | ||
| FallbackInfo(windowSortCount = windowSortCount) | ||
| } | ||
| } | ||
|
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| private def fallbackToRowBasedPlan(outputsColumnar: Boolean): SparkPlan = { | ||
| val planWithTransitions = Transitions.insertTransitions(originalPlan, outputsColumnar) | ||
| planWithTransitions | ||
| } | ||
|
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| override def apply(plan: SparkPlan): SparkPlan = { | ||
| val outputsColumnar = plan.supportsColumnar | ||
| val fallbackInfo = fallback(plan) | ||
| if (fallbackInfo.shouldFallback) { | ||
| val vanillaSparkPlan = fallbackToRowBasedPlan(outputsColumnar) | ||
| FallbackTags.addRecursively( | ||
| vanillaSparkPlan, | ||
| FallbackTag.Exclusive(fallbackInfo.reason.getOrElse("Unknown reason"))) | ||
| FallbackNode(vanillaSparkPlan) | ||
| } else { | ||
| plan | ||
| } | ||
| } | ||
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| case class FallbackInfo(reason: Option[String] = None, windowSortCount: Int = 0) { | ||
| def shouldFallback: Boolean = reason.isDefined | ||
| } | ||
|
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| object FallbackInfo { | ||
| def DO_NOT_FALLBACK(): FallbackInfo = FallbackInfo() | ||
| } | ||
| } |
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