ajantha-bhat commented on a change in pull request #3375: URL: https://github.com/apache/iceberg/pull/3375#discussion_r759760076
########## File path: spark/v3.2/spark/src/main/java/org/apache/iceberg/spark/procedures/RewriteDataFilesProcedure.java ########## @@ -0,0 +1,192 @@ +/* + * 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.procedures; + +import java.util.Map; +import org.apache.iceberg.SortOrder; +import org.apache.iceberg.Table; +import org.apache.iceberg.actions.RewriteDataFiles; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.spark.procedures.SparkProcedures.ProcedureBuilder; +import org.apache.spark.sql.AnalysisException; +import org.apache.spark.sql.catalyst.InternalRow; +import org.apache.spark.sql.catalyst.expressions.Expression; +import org.apache.spark.sql.catalyst.parser.ParseException; +import org.apache.spark.sql.catalyst.parser.ParserInterface; +import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan; +import org.apache.spark.sql.catalyst.plans.logical.SetWriteDistributionAndOrdering; +import org.apache.spark.sql.catalyst.plans.logical.SortOrderParserUtil; +import org.apache.spark.sql.connector.catalog.Identifier; +import org.apache.spark.sql.connector.catalog.TableCatalog; +import org.apache.spark.sql.connector.iceberg.catalog.ProcedureParameter; +import org.apache.spark.sql.execution.datasources.SparkExpressionConverter; +import org.apache.spark.sql.types.DataTypes; +import org.apache.spark.sql.types.Metadata; +import org.apache.spark.sql.types.StructField; +import org.apache.spark.sql.types.StructType; +import scala.runtime.BoxedUnit; + +/** + * A procedure that rewrites datafiles in a table. + * + * @see org.apache.iceberg.spark.actions.SparkActions#rewriteDataFiles(Table) + */ +class RewriteDataFilesProcedure extends BaseProcedure { + + private static final ProcedureParameter[] PARAMETERS = new ProcedureParameter[]{ + ProcedureParameter.required("table", DataTypes.StringType), + ProcedureParameter.optional("strategy", DataTypes.StringType), + ProcedureParameter.optional("sort_order", DataTypes.StringType), + ProcedureParameter.optional("options", STRING_MAP), + ProcedureParameter.optional("where", DataTypes.StringType) + }; + + // counts are not nullable since the action result is never null + private static final StructType OUTPUT_TYPE = new StructType(new StructField[]{ + new StructField("rewritten_data_files_count", DataTypes.IntegerType, false, Metadata.empty()), + new StructField("added_data_files_count", DataTypes.IntegerType, false, Metadata.empty()) + }); + + public static ProcedureBuilder builder() { + return new Builder<RewriteDataFilesProcedure>() { + @Override + protected RewriteDataFilesProcedure doBuild() { + return new RewriteDataFilesProcedure(tableCatalog()); + } + }; + } + + private RewriteDataFilesProcedure(TableCatalog tableCatalog) { + super(tableCatalog); + } + + @Override + public ProcedureParameter[] parameters() { + return PARAMETERS; + } + + @Override + public StructType outputType() { + return OUTPUT_TYPE; + } + + @Override + public InternalRow[] call(InternalRow args) { + Identifier tableIdent = toIdentifier(args.getString(0), PARAMETERS[0].name()); + + return modifyIcebergTable(tableIdent, table -> { + RewriteDataFiles action = actions().rewriteDataFiles(table); + + String strategy = args.isNullAt(1) ? null : args.getString(1); + SortOrder sortOrder = collectSortOrders(table, args.isNullAt(2) ? null : args.getString(2)); + action = checkAndApplyStrategy(action, strategy, sortOrder); + + if (!args.isNullAt(3)) { + action = checkAndApplyOptions(args, action); + } + + String where = args.isNullAt(4) ? null : args.getString(4); + action = checkAndApplyFilter(action, where); + + RewriteDataFiles.Result result = action.execute(); + + return toOutputRows(result); + }); + } + + private RewriteDataFiles checkAndApplyFilter(RewriteDataFiles action, String where) { + if (where != null) { + ParserInterface sqlParser = spark().sessionState().sqlParser(); + try { + Expression expression = sqlParser.parseExpression(where); + return action.filter(SparkExpressionConverter.convertToIcebergExpression(expression)); + } catch (ParseException e) { + throw new IllegalArgumentException("Cannot parse predicates in where option: " + where); + } + } + return action; + } + + private RewriteDataFiles checkAndApplyOptions(InternalRow args, RewriteDataFiles action) { + Map<String, String> options = Maps.newHashMap(); + args.getMap(3).foreach(DataTypes.StringType, DataTypes.StringType, + (k, v) -> { + options.put(k.toString(), v.toString()); + return BoxedUnit.UNIT; + }); + return action.options(options); + } + + private RewriteDataFiles checkAndApplyStrategy(RewriteDataFiles action, String strategy, SortOrder sortOrder) { + if (strategy != null) { + if (strategy.equalsIgnoreCase("binpack")) { + RewriteDataFiles rewriteDataFiles = action.binPack(); + if (sortOrder != null) { + // calling below method to throw the error as user has set both binpack strategy and sortorder + return rewriteDataFiles.sort(sortOrder); + } + return rewriteDataFiles; + } else if (strategy.equalsIgnoreCase("sort")) { + if (sortOrder == null) { + return action.sort(); + } + return action.sort(sortOrder); + } else { + throw new IllegalArgumentException("unsupported strategy: " + strategy + ". Only binpack,sort is supported"); + } + } else { + // overerride default binpack to sort, as startgey is not set but sort order is set. + if (sortOrder != null) { + return action.sort(sortOrder); + } + } + return action; + } + + private SortOrder collectSortOrders(Table table, String sortOrderStr) { + if (sortOrderStr != null) { + String prefix = "ALTER TABLE temp WRITE ORDERED BY "; + try { + // Note: Reusing the existing Iceberg sql parser to avoid implementing the custom parser for sort orders. Review comment: yeah. Thanks. I too didn't find any shorter way to do the same. Already spent quite some time on it :) -- 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. 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