aokolnychyi commented on a change in pull request #1525: URL: https://github.com/apache/iceberg/pull/1525#discussion_r540323742
########## File path: spark3/src/main/java/org/apache/iceberg/actions/Spark3SnapshotAction.java ########## @@ -0,0 +1,138 @@ +/* + * 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.actions; + +import java.util.Map; +import org.apache.iceberg.Snapshot; +import org.apache.iceberg.SnapshotSummary; +import org.apache.iceberg.Table; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.iceberg.spark.SparkTableUtil; +import org.apache.iceberg.spark.source.StagedSparkTable; +import org.apache.spark.sql.SparkSession; +import org.apache.spark.sql.catalyst.TableIdentifier; +import org.apache.spark.sql.connector.catalog.CatalogPlugin; +import org.apache.spark.sql.connector.catalog.Identifier; +import org.apache.spark.sql.connector.catalog.TableCatalog; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import scala.collection.JavaConverters; + +/** + * Creates a new Iceberg table based on a source Spark table. The new Iceberg table will + * have a different data and metadata directory allowing it to exist independently of the + * source table. + */ +class Spark3SnapshotAction extends Spark3CreateAction implements SnapshotAction { + private static final Logger LOG = LoggerFactory.getLogger(Spark3SnapshotAction.class); + + private String destTableLocation = null; + + Spark3SnapshotAction(SparkSession spark, CatalogPlugin sourceCatalog, + Identifier sourceTableIdent, CatalogPlugin destCatalog, + Identifier destTableIdent) { + super(spark, sourceCatalog, sourceTableIdent, destCatalog, destTableIdent); + } + + @Override + public Long execute() { + StagedSparkTable stagedTable = stageDestTable(); + Table icebergTable = stagedTable.table(); + // TODO Check table location here against source location + + ensureNameMappingPresent(icebergTable); + + boolean threw = true; + try { + String stagingLocation = getMetadataLocation(icebergTable); + LOG.info("Beginning snapshot of {} to {} using metadata location {}", sourceTableIdent(), destTableIdent(), + stagingLocation); + + TableIdentifier v1TableIdentifier = v1SourceTable().identifier(); + SparkTableUtil.importSparkTable(spark(), v1TableIdentifier, icebergTable, stagingLocation); + stagedTable.commitStagedChanges(); + threw = false; + } finally { + if (threw) { + LOG.error("Error when attempting to commit snapshot changes, rolling back"); + + try { + stagedTable.abortStagedChanges(); + } catch (Exception abortException) { + LOG.error("Cannot abort staged changes", abortException); + } + } + } + + Snapshot snapshot = icebergTable.currentSnapshot(); + long numMigratedFiles = Long.parseLong(snapshot.summary().get(SnapshotSummary.TOTAL_DATA_FILES_PROP)); + LOG.info("Successfully loaded Iceberg metadata for {} files", numMigratedFiles); + return numMigratedFiles; + } + + @Override + protected Map<String, String> targetTableProps() { + Map<String, String> properties = Maps.newHashMap(); + + // Remove any possible location properties from origin properties + properties.putAll(JavaConverters.mapAsJavaMapConverter(v1SourceTable().properties()).asJava()); Review comment: +1 ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
