rdblue commented on a change in pull request #2829: URL: https://github.com/apache/iceberg/pull/2829#discussion_r706283695
########## File path: spark3/src/main/java/org/apache/iceberg/spark/actions/Spark3SortStrategy.java ########## @@ -0,0 +1,169 @@ +/* + * 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.iceberg.spark.actions; + +import java.util.Arrays; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.UUID; +import java.util.stream.Stream; +import org.apache.iceberg.DataFile; +import org.apache.iceberg.FileScanTask; +import org.apache.iceberg.Table; +import org.apache.iceberg.actions.RewriteDataFiles; +import org.apache.iceberg.actions.RewriteStrategy; +import org.apache.iceberg.actions.SortStrategy; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableSet; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.spark.FileRewriteCoordinator; +import org.apache.iceberg.spark.FileScanTaskSetManager; +import org.apache.iceberg.spark.Spark3Util; +import org.apache.iceberg.spark.SparkReadOptions; +import org.apache.iceberg.spark.SparkWriteOptions; +import org.apache.iceberg.util.PropertyUtil; +import org.apache.spark.sql.Dataset; +import org.apache.spark.sql.Row; +import org.apache.spark.sql.SparkSession; +import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan; +import org.apache.spark.sql.catalyst.utils.DistributionAndOrderingUtils$; +import org.apache.spark.sql.connector.iceberg.distributions.Distribution; +import org.apache.spark.sql.connector.iceberg.distributions.Distributions; +import org.apache.spark.sql.connector.iceberg.expressions.SortOrder; +import org.apache.spark.sql.internal.SQLConf; +import scala.collection.JavaConverters; +import scala.collection.Seq; + +public class Spark3SortStrategy extends SortStrategy { + + public static final String SIZE_ESTIMATE_MULTIPLE = "size-estimate-multiple"; + + public static final String SHUFFLE_TASKS_PER_FILE = "shuffle-tasks-per-file"; + public static final int SHUFFLE_TASKS_PER_FILE_DEFAULT = 1; + + private final Table table; + private final SparkSession spark; + private final FileScanTaskSetManager manager = FileScanTaskSetManager.get(); + private final FileRewriteCoordinator rewriteCoordinator = FileRewriteCoordinator.get(); + + private double sizeEstimateMultiple; + private int shuffleTasksPerFile; + + public Spark3SortStrategy(Table table, SparkSession spark) { + this.table = table; + this.spark = spark; + } + + @Override + public Table table() { + return table; + } + + @Override + public Set<String> validOptions() { + return ImmutableSet.<String>builder() + .addAll(super.validOptions()) + .add(SIZE_ESTIMATE_MULTIPLE) + .add(SHUFFLE_TASKS_PER_FILE) + .build(); + } + + @Override + public RewriteStrategy options(Map<String, String> options) { + sizeEstimateMultiple = PropertyUtil.propertyAsDouble(options, + SIZE_ESTIMATE_MULTIPLE, + 1.0); + + Preconditions.checkArgument(sizeEstimateMultiple > 0, + "Cannot use Spark3Sort Strategy without %s being positive, found %s", + SIZE_ESTIMATE_MULTIPLE, sizeEstimateMultiple); + + shuffleTasksPerFile = PropertyUtil.propertyAsInt(options, + SHUFFLE_TASKS_PER_FILE, + SHUFFLE_TASKS_PER_FILE_DEFAULT); + + Preconditions.checkArgument(shuffleTasksPerFile >= 1, + "Cannot use Spark3Sort Strategy as option %s must be >= 1, found %s", + SHUFFLE_TASKS_PER_FILE, shuffleTasksPerFile); + + return super.options(options); + } + + @Override + public Set<DataFile> rewriteFiles(List<FileScanTask> filesToRewrite) { + String groupID = UUID.randomUUID().toString(); + boolean requiresRepartition = !filesToRewrite.get(0).spec().equals(table.spec()); + SortOrder[] ordering; + Distribution distribution; + ordering = Spark3Util.convert(sortOrder()); + if (requiresRepartition) { + distribution = Spark3Util.buildRequiredDistribution(table); + ordering = Stream.concat( + Arrays.stream(Spark3Util.buildRequiredOrdering(distribution, table())), + Arrays.stream(ordering)).toArray(SortOrder[]::new); + } else { + distribution = Distributions.ordered(ordering); Review comment: Why would we not use the partition columns in the sort? It seems to me that we want to always go through the utility methods to build the distribution and sort. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
