deniskuzZ commented on code in PR #5995: URL: https://github.com/apache/hive/pull/5995#discussion_r2287901417
########## iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/BaseHiveIcebergMetaHook.java: ########## @@ -0,0 +1,415 @@ +/* + * 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 com.fasterxml.jackson.databind.ObjectMapper; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Properties; +import java.util.Set; +import java.util.stream.Collectors; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hive.metastore.HiveMetaHook; +import org.apache.hadoop.hive.metastore.api.CreateTableRequest; +import org.apache.hadoop.hive.metastore.api.EnvironmentContext; +import org.apache.hadoop.hive.metastore.api.FieldSchema; +import org.apache.hadoop.hive.metastore.api.SQLPrimaryKey; +import org.apache.hadoop.hive.metastore.api.hive_metastoreConstants; +import org.apache.hadoop.hive.ql.ddl.misc.sortoder.SortFieldDesc; +import org.apache.hadoop.hive.ql.ddl.misc.sortoder.SortFields; +import org.apache.hadoop.hive.ql.util.NullOrdering; +import org.apache.iceberg.BaseMetastoreTableOperations; +import org.apache.iceberg.BaseTable; +import org.apache.iceberg.NullOrder; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.PartitionSpecParser; +import org.apache.iceberg.Schema; +import org.apache.iceberg.SchemaParser; +import org.apache.iceberg.SortDirection; +import org.apache.iceberg.SortOrder; +import org.apache.iceberg.SortOrderParser; +import org.apache.iceberg.Table; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.exceptions.NoSuchTableException; +import org.apache.iceberg.exceptions.NotFoundException; +import org.apache.iceberg.hive.CatalogUtils; +import org.apache.iceberg.hive.HMSTablePropertyHelper; +import org.apache.iceberg.hive.HiveSchemaUtil; +import org.apache.iceberg.mr.Catalogs; +import org.apache.iceberg.mr.InputFormatConfig; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.base.Splitter; +import org.apache.iceberg.relocated.com.google.common.base.Strings; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableSet; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.types.Types; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import static org.apache.iceberg.RowLevelOperationMode.MERGE_ON_READ; + +public class BaseHiveIcebergMetaHook implements HiveMetaHook { + private static final Logger LOG = LoggerFactory.getLogger(BaseHiveIcebergMetaHook.class); + private static final ObjectMapper JSON_OBJECT_MAPPER = new ObjectMapper(); + public static final Map<String, String> COMMON_HMS_PROPERTIES = ImmutableMap.of( + BaseMetastoreTableOperations.TABLE_TYPE_PROP, BaseMetastoreTableOperations.ICEBERG_TABLE_TYPE_VALUE.toUpperCase() + ); + private static final Set<String> PARAMETERS_TO_REMOVE = ImmutableSet + .of(InputFormatConfig.TABLE_SCHEMA, Catalogs.LOCATION, Catalogs.NAME, InputFormatConfig.PARTITION_SPEC); + static final String ORC_FILES_ONLY = "iceberg.orc.files.only"; + + protected final Configuration conf; + protected Table icebergTable = null; + protected Properties catalogProperties; + protected boolean createHMSTableInHook = false; + + public enum FileFormat { + ORC("orc"), PARQUET("parquet"), AVRO("avro"); + + private final String label; + + FileFormat(String label) { + this.label = label; + } + + public String getLabel() { + return label; + } + } + + public BaseHiveIcebergMetaHook(Configuration conf) { + this.conf = conf; + } + + @Override + public void preCreateTable(org.apache.hadoop.hive.metastore.api.Table hmsTable) { + CreateTableRequest request = new CreateTableRequest(hmsTable); + preCreateTable(request); + } + + @Override + public void preCreateTable(CreateTableRequest request) { + org.apache.hadoop.hive.metastore.api.Table hmsTable = request.getTable(); + if (hmsTable.isTemporary()) { + throw new UnsupportedOperationException("Creation of temporary iceberg tables is not supported."); + } + this.catalogProperties = CatalogUtils.getCatalogProperties(hmsTable); + + // Set the table type even for non HiveCatalog based tables + hmsTable.getParameters().put(BaseMetastoreTableOperations.TABLE_TYPE_PROP, + BaseMetastoreTableOperations.ICEBERG_TABLE_TYPE_VALUE.toUpperCase()); + + if (!Catalogs.hiveCatalog(conf, catalogProperties)) { + if (Boolean.parseBoolean(this.catalogProperties.getProperty(hive_metastoreConstants.TABLE_IS_CTLT))) { + throw new UnsupportedOperationException("CTLT target table must be a HiveCatalog table."); + } + // For non-HiveCatalog tables too, we should set the input and output format + // so that the table can be read by other engines like Impala + hmsTable.getSd().setInputFormat(HiveIcebergInputFormat.class.getCanonicalName()); + hmsTable.getSd().setOutputFormat(HiveIcebergOutputFormat.class.getCanonicalName()); + + // If not using HiveCatalog check for existing table + try { + this.icebergTable = IcebergTableUtil.getTable(conf, catalogProperties, true); + + if (Catalogs.hadoopCatalog(conf, catalogProperties) && hmsTable.getSd() != null && + hmsTable.getSd().getLocation() == null) { + hmsTable.getSd().setLocation(icebergTable.location()); + } + Preconditions.checkArgument(catalogProperties.getProperty(InputFormatConfig.TABLE_SCHEMA) == null, + "Iceberg table already created - can not use provided schema"); + Preconditions.checkArgument(catalogProperties.getProperty(InputFormatConfig.PARTITION_SPEC) == null, + "Iceberg table already created - can not use provided partition specification"); + + LOG.info("Iceberg table already exists {}", icebergTable); + return; + } catch (NoSuchTableException nte) { + // If the table does not exist we will create it below + } + } + + // If the table does not exist collect data for table creation + // - InputFormatConfig.TABLE_SCHEMA, InputFormatConfig.PARTITION_SPEC takes precedence so the user can override the + // Iceberg schema and specification generated by the code + + Set<String> identifierFields = Optional.ofNullable(request.getPrimaryKeys()) + .map(primaryKeys -> + primaryKeys.stream().map(SQLPrimaryKey::getColumn_name).collect(Collectors.toSet())) + .orElse(Collections.emptySet()); + + Schema schema = schema(catalogProperties, hmsTable, identifierFields); + PartitionSpec spec = spec(conf, schema, hmsTable); + + // If there are partition keys specified remove them from the HMS table and add them to the column list + if (hmsTable.isSetPartitionKeys()) { + hmsTable.getSd().getCols().addAll(hmsTable.getPartitionKeys()); + hmsTable.setPartitionKeysIsSet(false); + } + + catalogProperties.put(InputFormatConfig.TABLE_SCHEMA, SchemaParser.toJson(schema)); + String specString = PartitionSpecParser.toJson(spec); + catalogProperties.put(InputFormatConfig.PARTITION_SPEC, specString); + + if (request.getEnvContext() == null) { + request.setEnvContext(new EnvironmentContext()); + } + request.getEnvContext().putToProperties(TableProperties.DEFAULT_PARTITION_SPEC, specString); + setCommonHmsTablePropertiesForIceberg(hmsTable); + + if (hmsTable.getParameters().containsKey(BaseMetastoreTableOperations.METADATA_LOCATION_PROP)) { + createHMSTableInHook = true; + } + + assertFileFormat(catalogProperties.getProperty(TableProperties.DEFAULT_FILE_FORMAT)); + + // Set whether the format is ORC, to be used during vectorization. + setOrcOnlyFilesParam(hmsTable); + // Remove hive primary key columns from table request, as iceberg doesn't support hive primary key. + request.setPrimaryKeys(null); + setSortOrder(hmsTable, schema, catalogProperties); + } + + private void setSortOrder(org.apache.hadoop.hive.metastore.api.Table hmsTable, Schema schema, + Properties properties) { + String sortOderJSONString = hmsTable.getParameters().get(TableProperties.DEFAULT_SORT_ORDER); + SortFields sortFields = null; + if (!Strings.isNullOrEmpty(sortOderJSONString)) { + try { + sortFields = JSON_OBJECT_MAPPER.reader().readValue(sortOderJSONString, SortFields.class); + } catch (Exception e) { + LOG.warn("Can not read write order json: {}", sortOderJSONString, e); + return; + } + if (sortFields != null && !sortFields.getSortFields().isEmpty()) { + SortOrder.Builder sortOderBuilder = SortOrder.builderFor(schema); + sortFields.getSortFields().forEach(fieldDesc -> { + NullOrder nullOrder = fieldDesc.getNullOrdering() == NullOrdering.NULLS_FIRST ? + NullOrder.NULLS_FIRST : NullOrder.NULLS_LAST; + SortDirection sortDirection = fieldDesc.getDirection() == SortFieldDesc.SortDirection.ASC ? + SortDirection.ASC : SortDirection.DESC; + sortOderBuilder.sortBy(fieldDesc.getColumnName(), sortDirection, nullOrder); + }); + properties.put(TableProperties.DEFAULT_SORT_ORDER, SortOrderParser.toJson(sortOderBuilder.build())); + } + } + } + + @Override + public void rollbackCreateTable(org.apache.hadoop.hive.metastore.api.Table hmsTable) { + // do nothing + } + + @Override + public void commitCreateTable(org.apache.hadoop.hive.metastore.api.Table hmsTable) { + // do nothing + } + + @Override + public void preDropTable(org.apache.hadoop.hive.metastore.api.Table hmsTable) { + // do nothing + } + + @Override + public void rollbackDropTable(org.apache.hadoop.hive.metastore.api.Table hmsTable) { + // do nothing + } + + @Override + public void commitDropTable(org.apache.hadoop.hive.metastore.api.Table hmsTable, boolean deleteData) { + // do nothing + } + + @Override public boolean createHMSTableInHook() { Review Comment: new line -- This is an automated message from the Apache Git Service. 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