danielcweeks commented on code in PR #8907: URL: https://github.com/apache/iceberg/pull/8907#discussion_r1460690912
########## hive-metastore/src/main/java/org/apache/iceberg/hive/HiveViewOperations.java: ########## @@ -0,0 +1,302 @@ +/* + * 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.Collections; +import java.util.Locale; +import java.util.Map; +import java.util.Objects; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hive.metastore.IMetaStoreClient; +import org.apache.hadoop.hive.metastore.TableType; +import org.apache.hadoop.hive.metastore.api.InvalidObjectException; +import org.apache.hadoop.hive.metastore.api.NoSuchObjectException; +import org.apache.hadoop.hive.metastore.api.Table; +import org.apache.iceberg.BaseMetastoreCatalog; +import org.apache.iceberg.BaseMetastoreTableOperations; +import org.apache.iceberg.ClientPool; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.exceptions.AlreadyExistsException; +import org.apache.iceberg.exceptions.CommitFailedException; +import org.apache.iceberg.exceptions.CommitStateUnknownException; +import org.apache.iceberg.exceptions.NoSuchIcebergViewException; +import org.apache.iceberg.exceptions.NoSuchViewException; +import org.apache.iceberg.exceptions.ValidationException; +import org.apache.iceberg.io.FileIO; +import org.apache.iceberg.util.MetastoreOperationsUtil; +import org.apache.iceberg.view.BaseViewOperations; +import org.apache.iceberg.view.ViewMetadata; +import org.apache.thrift.TException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** Hive implementation of Iceberg ViewOperations. */ +final class HiveViewOperations extends BaseViewOperations implements HiveOperationsBase { + private static final Logger LOG = LoggerFactory.getLogger(HiveViewOperations.class); + + private final String fullName; + private final String database; + private final String viewName; + private final FileIO fileIO; + private final ClientPool<IMetaStoreClient, TException> metaClients; + private final long maxHiveTablePropertySize; + + HiveViewOperations( + Configuration conf, + ClientPool<IMetaStoreClient, TException> metaClients, + FileIO fileIO, + String catalogName, + TableIdentifier viewIdentifier) { + String dbName = viewIdentifier.namespace().level(0); + this.metaClients = metaClients; + this.fileIO = fileIO; + this.fullName = BaseMetastoreCatalog.fullTableName(catalogName, viewIdentifier); + this.database = dbName; + this.viewName = viewIdentifier.name(); + this.maxHiveTablePropertySize = + conf.getLong(HIVE_TABLE_PROPERTY_MAX_SIZE, HIVE_TABLE_PROPERTY_MAX_SIZE_DEFAULT); + } + + @Override + public void doRefresh() { + String metadataLocation = null; + Table table; + + try { + table = metaClients.run(client -> client.getTable(database, viewName)); + HiveViewOperations.validateTableIsIcebergView(table, fullName); + + metadataLocation = + table.getParameters().get(BaseMetastoreTableOperations.METADATA_LOCATION_PROP); + + } catch (NoSuchObjectException | NoSuchIcebergViewException e) { + if (currentMetadataLocation() != null) { + throw new NoSuchViewException("View does not exist: %s.%s", database, viewName); + } + } catch (TException e) { + String errMsg = + String.format("Failed to get view info from metastore %s.%s", database, viewName); + throw new RuntimeException(errMsg, e); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + throw new RuntimeException("Interrupted during refresh", e); + } + + refreshFromMetadataLocation(metadataLocation); + } + + @Override + public void doCommit(ViewMetadata base, ViewMetadata metadata) { + boolean newView = base == null; + String newMetadataLocation = writeNewMetadataIfRequired(metadata); + boolean updateHiveView = false; + BaseMetastoreTableOperations.CommitStatus commitStatus = + BaseMetastoreTableOperations.CommitStatus.FAILURE; + + try { + Table view = null; + + try { + view = metaClients.run(client -> client.getTable(database, viewName)); + } catch (NoSuchObjectException nte) { + LOG.trace("View not found {}.{}", database, viewName, nte); + } + + if (view != null) { + if (!view.getTableType().equalsIgnoreCase(TableType.VIRTUAL_VIEW.name())) { + throw new AlreadyExistsException( + "Table with same name already exists: %s.%s", database, viewName); + } + + // If we try to create the view but the metadata location is already set, then we had a + // concurrent commit + if (newView + && view.getParameters().get(BaseMetastoreTableOperations.METADATA_LOCATION_PROP) + != null) { + throw new AlreadyExistsException("View already exists: %s.%s", database, viewName); + } + + updateHiveView = true; + LOG.debug("Committing existing view: {}", fullName); + } else { + view = + newHmsTable( Review Comment: When creating the table/view definition in hms, we should be setting something in the original and expanded text fields to indicate that this is an Iceberg view. This can help if something non-iceberg attempts to load the view definition. -- 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
