rdblue commented on code in PR #15049: URL: https://github.com/apache/iceberg/pull/15049#discussion_r2898370679
########## core/src/main/java/org/apache/iceberg/ManifestInfo.java: ########## @@ -0,0 +1,137 @@ +/* + * 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.nio.ByteBuffer; +import org.apache.iceberg.types.Types; + +/** + * Information about a manifest entry in a v4 root manifest. + * + * <p>This encapsulates added/existing/deleted/replaced file and row counts, min_sequence_number, + * and the manifest deletion vector. This must be defined when the content_type is a manifest (3 or + * 4), and null otherwise. + */ +interface ManifestInfo { + Types.NestedField ADDED_FILES_COUNT = + Types.NestedField.required( + 504, "added_files_count", Types.IntegerType.get(), "Number of files added"); + Types.NestedField EXISTING_FILES_COUNT = + Types.NestedField.required( + 505, "existing_files_count", Types.IntegerType.get(), "Number of existing files"); + Types.NestedField DELETED_FILES_COUNT = + Types.NestedField.required( + 506, "deleted_files_count", Types.IntegerType.get(), "Number of deleted files"); + Types.NestedField REPLACED_FILES_COUNT = + Types.NestedField.required( + 160, "replaced_files_count", Types.IntegerType.get(), "Number of replaced files"); + Types.NestedField ADDED_ROWS_COUNT = + Types.NestedField.required( + 512, "added_rows_count", Types.LongType.get(), "Number of rows in added files"); + Types.NestedField EXISTING_ROWS_COUNT = + Types.NestedField.required( + 513, "existing_rows_count", Types.LongType.get(), "Number of rows in existing files"); + Types.NestedField DELETED_ROWS_COUNT = + Types.NestedField.required( + 514, "deleted_rows_count", Types.LongType.get(), "Number of rows in deleted files"); + Types.NestedField REPLACED_ROWS_COUNT = + Types.NestedField.required( + 161, "replaced_rows_count", Types.LongType.get(), "Number of rows in replaced files"); + Types.NestedField MIN_SEQUENCE_NUMBER = + Types.NestedField.required( + 516, + "min_sequence_number", + Types.LongType.get(), + "Minimum sequence number of files in this manifest"); + + Types.NestedField MANIFEST_DV_BITMAP = + Types.NestedField.required( + 162, + "bitmap", + Types.BinaryType.get(), + "Serialized deletion vector bitmap for manifest entries"); + Types.NestedField MANIFEST_DV_CARDINALITY = + Types.NestedField.required( + 163, + "cardinality", + Types.LongType.get(), + "Number of entries marked as deleted in the manifest DV bitmap"); + + Types.NestedField MANIFEST_DV = + Types.NestedField.optional( + 151, + "manifest_dv", + Types.StructType.of(MANIFEST_DV_BITMAP, MANIFEST_DV_CARDINALITY), + "Deletion vector for marking manifest entries as deleted without rewriting"); + + static Types.StructType schema() { + return Types.StructType.of( + ADDED_FILES_COUNT, + EXISTING_FILES_COUNT, + DELETED_FILES_COUNT, + REPLACED_FILES_COUNT, + ADDED_ROWS_COUNT, + EXISTING_ROWS_COUNT, + DELETED_ROWS_COUNT, + REPLACED_ROWS_COUNT, + MIN_SEQUENCE_NUMBER, + MANIFEST_DV); + } + + /** Returns the number of files added by this manifest. */ + int addedFilesCount(); + + /** Returns the number of existing files referenced by this manifest. */ + int existingFilesCount(); + + /** Returns the number of deleted files in this manifest. */ + int deletedFilesCount(); + + /** Returns the number of replaced files in this manifest. */ + int replacedFilesCount(); + + /** Returns the number of rows in added files. */ + long addedRowsCount(); + + /** Returns the number of rows in existing files. */ + long existingRowsCount(); + + /** Returns the number of rows in deleted files. */ + long deletedRowsCount(); + + /** Returns the number of rows in replaced files. */ + long replacedRowsCount(); + + /** Returns the minimum sequence number of files in this manifest. */ + long minSequenceNumber(); + + /** + * Returns the manifest deletion vector bitmap. + * + * <p>When present, each set bit position corresponds to an entry in the manifest that should be + * treated as deleted. This allows marking manifest entries as deleted without rewriting the + * manifest file. + */ + ByteBuffer dvBitmap(); Review Comment: If this is a direct method (rather than `dv().bitmap()`) then I think it makes sense to remove the wrapper struct. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
