deniskuzZ commented on code in PR #6789: URL: https://github.com/apache/hive/pull/6789#discussion_r4247563182
########## iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/RestCatalogScanPlanningUtil.java: ########## @@ -0,0 +1,206 @@ +/* + * 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.mr.hive; + +import java.util.Map; +import java.util.function.BiConsumer; +import org.apache.commons.lang3.StringUtils; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hive.conf.HiveConf; +import org.apache.hadoop.hive.metastore.conf.MetastoreConf; +import org.apache.iceberg.CatalogUtil; +import org.apache.iceberg.hive.IcebergCatalogProperties; +import org.apache.iceberg.rest.RESTCatalogProperties; + +/** + * Utilities for Iceberg REST catalog server-side scan planning configuration. + * + * <p>When a REST catalog server advertises the scan-planning endpoints and + * {@link RESTCatalogProperties#SCAN_PLANNING_MODE} is set to + * {@link RESTCatalogProperties.ScanPlanningMode#SERVER}, Iceberg's {@code RESTSessionCatalog} returns a + * {@code RESTTable} that delegates {@code planTasks()} to the server. Hive's + * {@code IcebergInputFormat} calls {@code scan.planTasks()} via + * {@link HiveTableUtil#resolveTableForScanPlanning}, which reloads the live REST catalog table + * (instead of a serialized metadata snapshot) when server mode is enabled and + * {@link HiveConf.ConfVars#HIVE_ICEBERG_REST_SCAN_PLANNING_MODE} is {@code server}. + * Operators can use this helper or set catalog {@code scan-planning-mode} directly in {@code hive-site.xml}. + * + * <p>Tests: {@code TestRestCatalogScanPlanningUtil} in {@code iceberg-handler}; + * {@code TestHiveIcebergServerSideScanPlanning} in {@code iceberg-handler}; embedded REST server + * tests {@code TestRestCatalogScanPlanningServerIT} and {@code TestHiveIcebergServerSideScanPlanningServerIT} + * in {@code itests/hive-iceberg-rest-server}. + * + * <p>{@link #setCatalogMode(Configuration, String, String)}, + * {@link #isCatalogServerMode(Configuration, String)}, and + * {@link #setHiveMode(Configuration, String)} are public so tests in other Maven modules + * (for example {@code itests/hive-iceberg-rest-server}) can configure scan planning; those modules + * compile against this artifact as a JAR and cannot call package-private members. They are not + * intended as a general operator or application API. + * + * @see <a href="https://iceberg.apache.org/docs/latest/catalog-properties/";>REST catalog properties</a> + */ +public final class RestCatalogScanPlanningUtil { + + private RestCatalogScanPlanningUtil() { + } + + private static void setCatalogMode( + Configuration conf, String catalogName, RESTCatalogProperties.ScanPlanningMode mode) { + conf.set( + IcebergCatalogProperties.catalogPropertyConfigKey( + catalogName, RESTCatalogProperties.SCAN_PLANNING_MODE), + mode.modeName()); + } + + public static void setCatalogMode(Configuration conf, String catalogName, String mode) { + setCatalogMode(conf, catalogName, RESTCatalogProperties.ScanPlanningMode.fromString(mode)); + } + + static RESTCatalogProperties.ScanPlanningMode getCatalogMode( + Configuration conf, String catalogName) { + String mode = conf.get( + IcebergCatalogProperties.catalogPropertyConfigKey( + catalogName, RESTCatalogProperties.SCAN_PLANNING_MODE), + RESTCatalogProperties.SCAN_PLANNING_MODE_DEFAULT.modeName()); + return RESTCatalogProperties.ScanPlanningMode.fromString(mode); + } + + public static boolean isCatalogServerMode(Configuration conf, String catalogName) { Review Comment: Server mode needs both hive.iceberg.rest.scan-planning-mode=server and the per-catalog scan-planning-mode=server The REST server can advertise the planning mode in LoadTableResponse.config, which is exactly what the IntegrationTests simulate, so the Hive-side check can disagree with what the loaded table will actually do. -- This is an automated message from the Apache Git Service. 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