zratkai commented on code in PR #12461: URL: https://github.com/apache/iceberg/pull/12461#discussion_r1989297201
########## hive-metastore/src/main/java/org/apache/iceberg/hive/IcebergTableConverter.java: ########## @@ -0,0 +1,197 @@ +/* + * 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.hive; + +import java.util.Locale; +import java.util.Map; +import java.util.Optional; +import java.util.Set; +import org.apache.hadoop.hive.common.StatsSetupConst; +import org.apache.hadoop.hive.metastore.api.Table; +import org.apache.hadoop.hive.metastore.api.hive_metastoreConstants; +import org.apache.hive.iceberg.com.fasterxml.jackson.core.JsonProcessingException; +import org.apache.iceberg.BaseMetastoreTableOperations; +import org.apache.iceberg.PartitionSpecParser; +import org.apache.iceberg.Schema; +import org.apache.iceberg.SchemaParser; +import org.apache.iceberg.Snapshot; +import org.apache.iceberg.SnapshotSummary; +import org.apache.iceberg.SortOrderParser; +import org.apache.iceberg.TableMetadata; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.relocated.com.google.common.annotations.VisibleForTesting; +import org.apache.iceberg.relocated.com.google.common.collect.BiMap; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableBiMap; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.util.JsonUtil; +import org.apache.parquet.hadoop.ParquetOutputFormat; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import static org.apache.iceberg.TableProperties.GC_ENABLED; + +public class IcebergTableConverter { + private static final Logger LOG = LoggerFactory.getLogger(IcebergTableConverter.class); + + private static final String HIVE_ICEBERG_METADATA_REFRESH_MAX_RETRIES = "iceberg.hive.metadata-refresh-max-retries"; + private static final int HIVE_ICEBERG_METADATA_REFRESH_MAX_RETRIES_DEFAULT = 2; + public static final String TABLE_TYPE_PROP = "table_type"; + public static final String ICEBERG_TABLE_TYPE_VALUE = "iceberg"; + + private static final BiMap<String, String> ICEBERG_TO_HMS_TRANSLATION = ImmutableBiMap.of( + // gc.enabled in Iceberg and external.table.purge in Hive are meant to do the same things + // but with different names + GC_ENABLED, "external.table.purge", TableProperties.PARQUET_COMPRESSION, ParquetOutputFormat.COMPRESSION, + TableProperties.PARQUET_ROW_GROUP_SIZE_BYTES, ParquetOutputFormat.BLOCK_SIZE); + + private final long maxHiveTablePropertySize; + + public IcebergTableConverter(long maxHiveTablePropertySize) { + this.maxHiveTablePropertySize = maxHiveTablePropertySize; + } + + public void setHmsTableParameters(String newMetadataLocation, Table tbl, TableMetadata metadata, + Set<String> obsoleteProps, boolean hiveEngineEnabled) { + Map<String, String> parameters = Optional.ofNullable(tbl.getParameters()).orElseGet(Maps::newHashMap); + Map<String, String> summary = Optional.ofNullable(metadata.currentSnapshot()).map(Snapshot::summary) + .orElseGet(ImmutableMap::of); + // push all Iceberg table properties into HMS + metadata.properties().entrySet().stream() + .filter(entry -> !entry.getKey().equalsIgnoreCase(HiveCatalog.HMS_TABLE_OWNER)).forEach(entry -> { + String key = entry.getKey(); + // translate key names between Iceberg and HMS where needed + String hmsKey = ICEBERG_TO_HMS_TRANSLATION.getOrDefault(key, key); + parameters.put(hmsKey, entry.getValue()); + }); + if (metadata.uuid() != null) { + parameters.put(TableProperties.UUID, metadata.uuid()); + } + + // remove any props from HMS that are no longer present in Iceberg table props + if (obsoleteProps != null) { + obsoleteProps.forEach(parameters::remove); + } + parameters.put(TABLE_TYPE_PROP, ICEBERG_TABLE_TYPE_VALUE.toUpperCase(Locale.ENGLISH)); + parameters.put(BaseMetastoreTableOperations.METADATA_LOCATION_PROP, newMetadataLocation); + +// if (currentMetadataLocation() != null && !currentMetadataLocation().isEmpty()) { +// parameters.put(PREVIOUS_METADATA_LOCATION_PROP, currentMetadataLocation()); +// } + + setStorageHandler(parameters, hiveEngineEnabled); + + // Set the basic statistics + if (summary.get(SnapshotSummary.TOTAL_DATA_FILES_PROP) != null) { + parameters.put(StatsSetupConst.NUM_FILES, summary.get(SnapshotSummary.TOTAL_DATA_FILES_PROP)); + } + if (summary.get(SnapshotSummary.TOTAL_RECORDS_PROP) != null) { + parameters.put(StatsSetupConst.ROW_COUNT, summary.get(SnapshotSummary.TOTAL_RECORDS_PROP)); + } + if (summary.get(SnapshotSummary.TOTAL_FILE_SIZE_PROP) != null) { + parameters.put(StatsSetupConst.TOTAL_SIZE, summary.get(SnapshotSummary.TOTAL_FILE_SIZE_PROP)); + } + + setSnapshotStats(metadata, parameters); + setSchema(metadata.schema(), parameters); + setPartitionSpec(metadata, parameters); + setSortOrder(metadata, parameters); + + tbl.setParameters(parameters); + } + + private void setStorageHandler(Map<String, String> parameters, boolean hiveEngineEnabled) { + // If needed set the 'storage_handler' property to enable query from Hive + if (hiveEngineEnabled) { + parameters.put(hive_metastoreConstants.META_TABLE_STORAGE, HiveOperationsBase.HIVE_ICEBERG_STORAGE_HANDLER); + } else { + parameters.remove(hive_metastoreConstants.META_TABLE_STORAGE); + } + } + + @VisibleForTesting + void setSnapshotStats(TableMetadata metadata, Map<String, String> parameters) { + parameters.remove(TableProperties.CURRENT_SNAPSHOT_ID); + parameters.remove(TableProperties.CURRENT_SNAPSHOT_TIMESTAMP); + parameters.remove(TableProperties.CURRENT_SNAPSHOT_SUMMARY); + + Snapshot currentSnapshot = metadata.currentSnapshot(); + if (exposeInHmsProperties() && currentSnapshot != null) { + parameters.put(TableProperties.CURRENT_SNAPSHOT_ID, String.valueOf(currentSnapshot.snapshotId())); + parameters.put(TableProperties.CURRENT_SNAPSHOT_TIMESTAMP, String.valueOf(currentSnapshot.timestampMillis())); + setSnapshotSummary(parameters, currentSnapshot); + } + + parameters.put(TableProperties.SNAPSHOT_COUNT, String.valueOf(metadata.snapshots().size())); + } + + @VisibleForTesting + void setSnapshotSummary(Map<String, String> parameters, Snapshot currentSnapshot) { + try { + String summary = JsonUtil.mapper().writeValueAsString(currentSnapshot.summary()); + if (summary.length() <= maxHiveTablePropertySize) { + parameters.put(TableProperties.CURRENT_SNAPSHOT_SUMMARY, summary); + } else { + LOG.warn("Not exposing the current snapshot({}) summary in HMS since it exceeds {} characters", + currentSnapshot.snapshotId(), maxHiveTablePropertySize); + } + } catch (JsonProcessingException e) { + LOG.warn("Failed to convert current snapshot({}) summary to a json string", currentSnapshot.snapshotId(), e); + } + } + + @VisibleForTesting + void setPartitionSpec(TableMetadata metadata, Map<String, String> parameters) { + parameters.remove(TableProperties.DEFAULT_PARTITION_SPEC); + if (exposeInHmsProperties() && metadata.spec() != null && metadata.spec().isPartitioned()) { + String spec = PartitionSpecParser.toJson(metadata.spec()); + setField(parameters, TableProperties.DEFAULT_PARTITION_SPEC, spec); + } + } + + @VisibleForTesting + void setSortOrder(TableMetadata metadata, Map<String, String> parameters) { + parameters.remove(TableProperties.DEFAULT_SORT_ORDER); + if (exposeInHmsProperties() && metadata.sortOrder() != null && metadata.sortOrder().isSorted()) { + String sortOrder = SortOrderParser.toJson(metadata.sortOrder()); + setField(parameters, TableProperties.DEFAULT_SORT_ORDER, sortOrder); + } + } + + private void setSchema(Schema schema, Map<String, String> parameters) { + parameters.remove(TableProperties.CURRENT_SCHEMA); + if (exposeInHmsProperties() && schema != null) { + String jsonSchema = SchemaParser.toJson(schema); + setField(parameters, TableProperties.CURRENT_SCHEMA, jsonSchema); + } + } + + private void setField(Map<String, String> parameters, String key, String value) { Review Comment: This refactor moved methods out of HiveTableOpreations which is a child class of HiveOperationsBase, which contains setField, but this helper class is not a child class of HiveOperationsBase, so it won't have this method otherweise. Refactored to be able to use the table property settings in other places. I will reuse it with my other PR which builds on top of this refactor. -- 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
