jackye1995 commented on a change in pull request #2873: URL: https://github.com/apache/iceberg/pull/2873#discussion_r677792038
########## File path: data/src/main/java/org/apache/iceberg/data/BaseWriterFactory.java ########## @@ -0,0 +1,255 @@ +/* + * 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.data; + +import java.io.IOException; +import java.io.UncheckedIOException; +import java.util.Map; +import org.apache.iceberg.FileFormat; +import org.apache.iceberg.MetricsConfig; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.Schema; +import org.apache.iceberg.SortOrder; +import org.apache.iceberg.StructLike; +import org.apache.iceberg.Table; +import org.apache.iceberg.avro.Avro; +import org.apache.iceberg.deletes.EqualityDeleteWriter; +import org.apache.iceberg.deletes.PositionDeleteWriter; +import org.apache.iceberg.encryption.EncryptedOutputFile; +import org.apache.iceberg.encryption.EncryptionKeyMetadata; +import org.apache.iceberg.io.DataWriter; +import org.apache.iceberg.io.OutputFile; +import org.apache.iceberg.io.WriterFactory; +import org.apache.iceberg.orc.ORC; +import org.apache.iceberg.parquet.Parquet; + +/** + * A base writer factory to be extended by query engine integrations. + */ +public abstract class BaseWriterFactory<T> implements WriterFactory<T> { + private final Table table; + private final FileFormat dataFileFormat; + private final Schema dataSchema; + private final SortOrder dataSortOrder; + private final FileFormat deleteFileFormat; + private final int[] equalityFieldIds; + private final Schema equalityDeleteRowSchema; + private final SortOrder equalityDeleteSortOrder; + private final Schema positionDeleteRowSchema; + private final SortOrder positionDeleteSortOrder; + + protected BaseWriterFactory(Table table, FileFormat dataFileFormat, Schema dataSchema, + SortOrder dataSortOrder, FileFormat deleteFileFormat, + int[] equalityFieldIds, Schema equalityDeleteRowSchema, + SortOrder equalityDeleteSortOrder, Schema positionDeleteRowSchema, + SortOrder positionDeleteSortOrder) { Review comment: I think the spec says it is: > The rows in the delete file must be sorted by `file_path` then `position` to optimize filtering rows while scanning. If not sorted, I believe that `Deletes.streamingFilter` algorithm would break: https://github.com/apache/iceberg/blob/master/core/src/main/java/org/apache/iceberg/deletes/Deletes.java#L211-L219 -- 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]
