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Spark 3.5: Implement RewriteTablePath
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304 changes: 304 additions & 0 deletions
304
core/src/main/java/org/apache/iceberg/RewriteTablePathUtil.java
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| /* | ||
| * 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; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.StreamSupport; | ||
| import org.apache.iceberg.data.Record; | ||
| import org.apache.iceberg.deletes.PositionDelete; | ||
| import org.apache.iceberg.deletes.PositionDeleteWriter; | ||
| import org.apache.iceberg.io.CloseableIterable; | ||
| import org.apache.iceberg.io.CloseableIterator; | ||
| import org.apache.iceberg.io.FileIO; | ||
| import org.apache.iceberg.io.InputFile; | ||
| import org.apache.iceberg.io.OutputFile; | ||
| import org.apache.iceberg.relocated.com.google.common.base.Preconditions; | ||
| import org.apache.iceberg.util.Pair; | ||
|
|
||
| public class RewriteTablePathUtil { | ||
|
|
||
| public static List<Pair<String, String>> rewriteManifest( | ||
| FileIO io, | ||
| int format, | ||
| PartitionSpec spec, | ||
| OutputFile outputFile, | ||
| ManifestFile manifestFile, | ||
| Map<Integer, PartitionSpec> specsById, | ||
| String sourcePrefix, | ||
| String targetPrefix) | ||
| throws IOException { | ||
| try (ManifestWriter<DataFile> writer = | ||
| ManifestFiles.write(format, spec, outputFile, manifestFile.snapshotId()); | ||
| ManifestReader<DataFile> reader = | ||
| ManifestFiles.read(manifestFile, io, specsById).select(Arrays.asList("*"))) { | ||
| return StreamSupport.stream(reader.entries().spliterator(), false) | ||
| .map(entry -> newDataFile(entry, spec, sourcePrefix, targetPrefix, writer)) | ||
| .collect(Collectors.toList()); | ||
| } | ||
| } | ||
|
|
||
| public static List<Pair<String, String>> rewriteDeleteManifest( | ||
| FileIO io, | ||
| int format, | ||
| PartitionSpec spec, | ||
| OutputFile outputFile, | ||
| ManifestFile manifestFile, | ||
| Map<Integer, PartitionSpec> specsById, | ||
| String sourcePrefix, | ||
| String targetPrefix, | ||
| String stagingLocation, | ||
| PositionDeleteReaderWriter positionDeleteReaderWriter) | ||
| throws IOException { | ||
| try (ManifestWriter<DeleteFile> writer = | ||
| ManifestFiles.writeDeleteManifest(format, spec, outputFile, manifestFile.snapshotId()); | ||
| ManifestReader<DeleteFile> reader = | ||
| ManifestFiles.readDeleteManifest(manifestFile, io, specsById) | ||
| .select(Arrays.asList("*"))) { | ||
| return StreamSupport.stream(reader.entries().spliterator(), false) | ||
| .map( | ||
| entry -> { | ||
| try { | ||
| return newDeleteFile( | ||
| entry, | ||
| io, | ||
| spec, | ||
| sourcePrefix, | ||
| targetPrefix, | ||
| stagingLocation, | ||
| writer, | ||
| positionDeleteReaderWriter); | ||
| } catch (IOException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| }) | ||
| .collect(Collectors.toList()); | ||
| } | ||
| } | ||
|
|
||
| private static Pair<String, String> newDataFile( | ||
| ManifestEntry<DataFile> entry, | ||
| PartitionSpec spec, | ||
| String sourcePrefix, | ||
| String targetPrefix, | ||
| ManifestWriter<DataFile> writer) { | ||
| DataFile dataFile = entry.file(); | ||
| String sourceDataFilePath = dataFile.location(); | ||
| Preconditions.checkArgument( | ||
| sourceDataFilePath.startsWith(sourcePrefix), | ||
| "Encountered data file %s not under the source prefix %s", | ||
| sourceDataFilePath, | ||
| sourcePrefix); | ||
| String targetDataFilePath = newPath(sourceDataFilePath, sourcePrefix, targetPrefix); | ||
| DataFile newDataFile = | ||
| DataFiles.builder(spec).copy(entry.file()).withPath(targetDataFilePath).build(); | ||
| appendEntryWithFile(entry, writer, newDataFile); | ||
| return Pair.of(sourceDataFilePath, newDataFile.location()); | ||
| } | ||
|
|
||
| private static Pair<String, String> newDeleteFile( | ||
| ManifestEntry<DeleteFile> entry, | ||
| FileIO io, | ||
| PartitionSpec spec, | ||
| String sourcePrefix, | ||
| String targetPrefix, | ||
| String stagingLocation, | ||
| ManifestWriter<DeleteFile> writer, | ||
| PositionDeleteReaderWriter posDeleteReaderWriter) | ||
| throws IOException { | ||
|
|
||
| DeleteFile file = entry.file(); | ||
|
|
||
| switch (file.content()) { | ||
| case POSITION_DELETES: | ||
| DeleteFile posDeleteFile = | ||
| rewritePositionDeleteFile( | ||
| io, file, spec, sourcePrefix, stagingLocation, targetPrefix, posDeleteReaderWriter); | ||
| String targetDeleteFilePath = newPath(file.location(), sourcePrefix, targetPrefix); | ||
| DeleteFile movedFile = | ||
| FileMetadata.deleteFileBuilder(spec) | ||
| .copy(posDeleteFile) | ||
| .withPath(targetDeleteFilePath) | ||
| .build(); | ||
| appendEntryWithFile(entry, writer, movedFile); | ||
| return Pair.of(posDeleteFile.location(), movedFile.location()); | ||
| case EQUALITY_DELETES: | ||
| DeleteFile eqDeleteFile = newEqualityDeleteFile(file, spec, sourcePrefix, targetPrefix); | ||
| appendEntryWithFile(entry, writer, eqDeleteFile); | ||
| return Pair.of(file.location(), eqDeleteFile.location()); | ||
| default: | ||
| throw new UnsupportedOperationException("Unsupported delete file type: " + file.content()); | ||
| } | ||
| } | ||
|
|
||
| private static <F extends ContentFile<F>> void appendEntryWithFile( | ||
| ManifestEntry<F> entry, ManifestWriter<F> writer, F file) { | ||
|
|
||
| switch (entry.status()) { | ||
| case ADDED: | ||
| writer.add(file); | ||
| break; | ||
| case EXISTING: | ||
| writer.existing( | ||
| file, entry.snapshotId(), entry.dataSequenceNumber(), entry.fileSequenceNumber()); | ||
| break; | ||
| case DELETED: | ||
| writer.delete(file, entry.dataSequenceNumber(), entry.fileSequenceNumber()); | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| public interface PositionDeleteReaderWriter { | ||
| CloseableIterable<Record> reader(InputFile inputFile, FileFormat format, PartitionSpec spec); | ||
|
|
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| PositionDeleteWriter<Record> writer( | ||
| OutputFile outputFile, | ||
| FileFormat format, | ||
| PartitionSpec spec, | ||
| StructLike partition, | ||
| Schema rowSchema) | ||
| throws IOException; | ||
| } | ||
|
|
||
| private static DeleteFile rewritePositionDeleteFile( | ||
| FileIO io, | ||
| DeleteFile current, | ||
| PartitionSpec spec, | ||
| String sourcePrefix, | ||
| String stagingLocation, | ||
| String targetPrefix, | ||
| PositionDeleteReaderWriter posDeleteReaderWriter) | ||
| throws IOException { | ||
| String path = current.location(); | ||
| if (!path.startsWith(sourcePrefix)) { | ||
| throw new UnsupportedOperationException( | ||
| "Expected delete file to be under the source prefix: " | ||
| + sourcePrefix | ||
| + " but was " | ||
| + path); | ||
| } | ||
| String newPath = stagingPath(path, stagingLocation); | ||
|
|
||
| OutputFile targetFile = io.newOutputFile(newPath); | ||
| InputFile sourceFile = io.newInputFile(path); | ||
|
|
||
| try (CloseableIterable<org.apache.iceberg.data.Record> reader = | ||
| posDeleteReaderWriter.reader(sourceFile, current.format(), spec)) { | ||
| org.apache.iceberg.data.Record record = null; | ||
| Schema rowSchema = null; | ||
| CloseableIterator<org.apache.iceberg.data.Record> recordIt = reader.iterator(); | ||
|
|
||
| if (recordIt.hasNext()) { | ||
| record = recordIt.next(); | ||
| rowSchema = record.get(2) != null ? spec.schema() : null; | ||
| } | ||
|
|
||
| PositionDeleteWriter<Record> writer = | ||
| posDeleteReaderWriter.writer( | ||
| targetFile, current.format(), spec, current.partition(), rowSchema); | ||
|
|
||
| try (writer) { | ||
| if (record != null) { | ||
| writer.write(newPositionDeleteRecord(record, sourcePrefix, targetPrefix)); | ||
| } | ||
|
|
||
| while (recordIt.hasNext()) { | ||
| record = recordIt.next(); | ||
| writer.write(newPositionDeleteRecord(record, sourcePrefix, targetPrefix)); | ||
| } | ||
| } | ||
| return writer.toDeleteFile(); | ||
| } | ||
| } | ||
|
|
||
| private static PositionDelete newPositionDeleteRecord( | ||
| Record record, String sourcePrefix, String targetPrefix) { | ||
| PositionDelete delete = PositionDelete.create(); | ||
| String oldPath = (String) record.get(0); | ||
| String newPath = oldPath; | ||
| if (oldPath.startsWith(sourcePrefix)) { | ||
| newPath = newPath(oldPath, sourcePrefix, targetPrefix); | ||
| } | ||
| delete.set(newPath, (Long) record.get(1), record.get(2)); | ||
| return delete; | ||
| } | ||
|
|
||
| private static DeleteFile newEqualityDeleteFile( | ||
| DeleteFile file, PartitionSpec spec, String sourcePrefix, String targetPrefix) { | ||
| String path = file.location(); | ||
|
|
||
| if (!path.startsWith(sourcePrefix)) { | ||
| throw new UnsupportedOperationException( | ||
| "Expected delete file to be under the source prefix: " | ||
| + sourcePrefix | ||
| + " but was " | ||
| + path); | ||
| } | ||
| int[] equalityFieldIds = file.equalityFieldIds().stream().mapToInt(Integer::intValue).toArray(); | ||
| String newPath = newPath(path, sourcePrefix, targetPrefix); | ||
| return FileMetadata.deleteFileBuilder(spec) | ||
| .ofEqualityDeletes(equalityFieldIds) | ||
| .copy(file) | ||
| .withPath(newPath) | ||
| .withSplitOffsets(file.splitOffsets()) | ||
| .build(); | ||
| } | ||
|
|
||
| private static String newPath(String path, String sourcePrefix, String targetPrefix) { | ||
| return combinePaths(targetPrefix, relativize(path, sourcePrefix)); | ||
| } | ||
|
|
||
| private static String combinePaths(String absolutePath, String relativePath) { | ||
| String combined = absolutePath; | ||
| if (!combined.endsWith("/")) { | ||
| combined += "/"; | ||
| } | ||
| combined += relativePath; | ||
| return combined; | ||
| } | ||
|
|
||
| private static String fileName(String path) { | ||
| String filename = path; | ||
| int lastIndex = path.lastIndexOf(File.separator); | ||
| if (lastIndex != -1) { | ||
| filename = path.substring(lastIndex + 1); | ||
| } | ||
| return filename; | ||
| } | ||
|
|
||
| private static String relativize(String path, String prefix) { | ||
| String toRemove = prefix; | ||
| if (!toRemove.endsWith("/")) { | ||
| toRemove += "/"; | ||
| } | ||
| if (!path.startsWith(toRemove)) { | ||
| throw new IllegalArgumentException( | ||
| String.format("Path %s does not start with %s", path, toRemove)); | ||
| } | ||
| return path.substring(toRemove.length()); | ||
| } | ||
|
|
||
| private static String stagingPath(String originalPath, String stagingLocation) { | ||
| return stagingLocation + fileName(originalPath); | ||
| } | ||
| } |
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