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113 changes: 113 additions & 0 deletions
113
src/main/scala/com/microsoft/hyperspace/index/dataskipping/rule/ApplyDataSkippingIndex.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /* | ||
| * Copyright (2021) The Hyperspace Project Authors. | ||
| * | ||
| * Licensed 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 com.microsoft.hyperspace.index.dataskipping.rule | ||
|
|
||
| import org.apache.spark.sql.catalyst.expressions.AttributeReference | ||
| import org.apache.spark.sql.catalyst.plans.logical.{Filter, LogicalPlan} | ||
| import org.apache.spark.sql.execution.datasources.{FileStatusCache, HadoopFsRelation, InMemoryFileIndex, LogicalRelation, PartitioningAwareFileIndex} | ||
| import org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat | ||
| import org.apache.spark.sql.hyperspace.utils.logicalPlanToDataFrame | ||
| import org.apache.spark.sql.types.StructType | ||
|
|
||
| import com.microsoft.hyperspace.index.IndexLogEntryTags | ||
| import com.microsoft.hyperspace.index.dataskipping.DataSkippingIndex | ||
| import com.microsoft.hyperspace.index.dataskipping.util.DataSkippingFileIndex | ||
| import com.microsoft.hyperspace.index.plans.logical.IndexHadoopFsRelation | ||
| import com.microsoft.hyperspace.index.rules.{ExtractRelation, HyperspaceRule, IndexRankFilter, IndexTypeFilter, QueryPlanIndexFilter} | ||
| import com.microsoft.hyperspace.index.rules.ApplyHyperspace.PlanToSelectedIndexMap | ||
|
|
||
| object ApplyDataSkippingIndex extends HyperspaceRule { | ||
| protected override val filtersOnQueryPlan: Seq[QueryPlanIndexFilter] = | ||
| IndexTypeFilter[DataSkippingIndex]() :: FilterPlanNodeFilter :: FilterConditionFilter :: Nil | ||
|
|
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| protected override val indexRanker: IndexRankFilter = FilterRankFilter | ||
|
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| override def applyIndex(plan: LogicalPlan, indexes: PlanToSelectedIndexMap): LogicalPlan = { | ||
| if (indexes.isEmpty) { | ||
| return plan | ||
| } | ||
| plan match { | ||
| case filter @ Filter(_, ExtractRelation(relation)) => | ||
| val indexLogEntry = indexes(relation.plan) | ||
| val indexDataPred = indexLogEntry | ||
| .getTagValue(plan, IndexLogEntryTags.DATASKIPPING_INDEX_PREDICATE) | ||
| .get | ||
| .getOrElse { return plan } | ||
| val indexDataSchema = indexLogEntry.derivedDataset.asInstanceOf[DataSkippingIndex].schema | ||
| val fileStatusCache = FileStatusCache.getOrCreate(spark) | ||
| val indexDataLoc = | ||
| indexLogEntry.withCachedTag(IndexLogEntryTags.DATASKIPPING_INDEX_FILEINDEX) { | ||
| new InMemoryFileIndex( | ||
| spark, | ||
| indexLogEntry.content.files, | ||
| Map.empty, | ||
| Some(indexDataSchema), | ||
| fileStatusCache) | ||
| } | ||
| val indexDataRel = LogicalRelation( | ||
| new HadoopFsRelation( | ||
| indexDataLoc, | ||
| StructType(Nil), | ||
| indexDataSchema, | ||
| None, | ||
| new ParquetFileFormat, | ||
| Map.empty)(spark)) | ||
| val indexData = logicalPlanToDataFrame(spark, indexDataRel) | ||
| val originalFileIndex = relation.plan match { | ||
| case LogicalRelation(HadoopFsRelation(location, _, _, _, _, _), _, _, _) => location | ||
| case _ => | ||
| indexLogEntry.withCachedTag( | ||
| relation.plan, | ||
| IndexLogEntryTags.DATASKIPPING_SOURCE_FILEINDEX) { | ||
| new InMemoryFileIndex( | ||
| spark, | ||
| relation.rootPaths, | ||
| relation.partitionBasePath | ||
| .map(PartitioningAwareFileIndex.BASE_PATH_PARAM -> _) | ||
| .toMap, | ||
| Some(relation.schema), | ||
| fileStatusCache) | ||
| } | ||
| } | ||
| val dataSkippingFileIndex = new DataSkippingFileIndex( | ||
| spark, | ||
| indexData, | ||
| indexDataPred, | ||
| indexLogEntry.fileIdTracker, | ||
| originalFileIndex) | ||
| val newFsRelation = IndexHadoopFsRelation( | ||
| relation.createHadoopFsRelation( | ||
| dataSkippingFileIndex, | ||
| relation.schema, | ||
| relation.options), | ||
| spark, | ||
| indexLogEntry) | ||
| val output = relation.output.map(_.asInstanceOf[AttributeReference]) | ||
| filter.copy(child = relation.createLogicalRelation(newFsRelation, output)) | ||
| case _ => plan | ||
| } | ||
| } | ||
|
|
||
| override def score(plan: LogicalPlan, indexes: PlanToSelectedIndexMap): Int = { | ||
| if (indexes.isEmpty) { | ||
| return 0 | ||
| } | ||
| // Return the lowest score so that covering indexes take precedence over | ||
| // data skipping indexes. | ||
| 1 | ||
| } | ||
| } |
63 changes: 63 additions & 0 deletions
63
src/main/scala/com/microsoft/hyperspace/index/dataskipping/rule/FilterConditionFilter.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* | ||
| * Copyright (2021) The Hyperspace Project Authors. | ||
| * | ||
| * Licensed 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 com.microsoft.hyperspace.index.dataskipping.rule | ||
|
|
||
| import org.apache.spark.sql.catalyst.expressions.Expression | ||
| import org.apache.spark.sql.catalyst.plans.logical.{Filter, LogicalPlan} | ||
|
|
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| import com.microsoft.hyperspace.index.IndexLogEntryTags | ||
| import com.microsoft.hyperspace.index.dataskipping.DataSkippingIndex | ||
| import com.microsoft.hyperspace.index.plananalysis.FilterReasons | ||
| import com.microsoft.hyperspace.index.rules.{ExtractRelation, QueryPlanIndexFilter} | ||
| import com.microsoft.hyperspace.index.rules.ApplyHyperspace.PlanToIndexesMap | ||
|
|
||
| /** | ||
| * FilterConditionFilter filters indexes out if | ||
| * 1) an index cannot be applied to the filter condition. | ||
| */ | ||
| object FilterConditionFilter extends QueryPlanIndexFilter { | ||
| override def apply(plan: LogicalPlan, candidateIndexes: PlanToIndexesMap): PlanToIndexesMap = { | ||
| if (candidateIndexes.isEmpty) { | ||
| return Map.empty | ||
| } | ||
| plan match { | ||
| case Filter(condition: Expression, ExtractRelation(relation)) => | ||
| val applicableIndexes = candidateIndexes(relation.plan).flatMap { indexLogEntry => | ||
| val indexDataPredOpt = | ||
| indexLogEntry.withCachedTag(plan, IndexLogEntryTags.DATASKIPPING_INDEX_PREDICATE) { | ||
| val index = indexLogEntry.derivedDataset.asInstanceOf[DataSkippingIndex] | ||
| index.translateFilterCondition(spark, condition, relation.plan) | ||
| } | ||
| if (withFilterReasonTag( | ||
| plan, | ||
| indexLogEntry, | ||
| FilterReasons.IneligibleFilterCondition(condition.sql))( | ||
| indexDataPredOpt.nonEmpty)) { | ||
| Some(indexLogEntry) | ||
| } else { | ||
| None | ||
| } | ||
| } | ||
| if (applicableIndexes.nonEmpty) { | ||
| Map(relation.plan -> applicableIndexes) | ||
| } else { | ||
| Map.empty | ||
| } | ||
| case _ => Map.empty | ||
| } | ||
| } | ||
| } |
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