nastra commented on code in PR #11657: URL: https://github.com/apache/iceberg/pull/11657#discussion_r1886261776
########## spark/v3.5/spark/src/main/java/org/apache/iceberg/spark/source/DVIterator.java: ########## @@ -0,0 +1,108 @@ +/* + * 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.spark.source; + +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import org.apache.iceberg.DeleteFile; +import org.apache.iceberg.MetadataColumns; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.Schema; +import org.apache.iceberg.data.BaseDeleteLoader; +import org.apache.iceberg.io.CloseableIterator; +import org.apache.iceberg.io.InputFile; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.types.Types; +import org.apache.spark.sql.catalyst.InternalRow; +import org.apache.spark.sql.catalyst.expressions.GenericInternalRow; +import org.apache.spark.unsafe.types.UTF8String; + +class DVIterator implements CloseableIterator<InternalRow> { + private final PartitionSpec spec; + private final DeleteFile deleteFile; + private final Schema projection; + private final Map<Integer, ?> idToConstant; + private final Iterator<Long> positions; + private Integer deletedPositionIndex; + private GenericInternalRow row; + + DVIterator( + InputFile inputFile, + DeleteFile deleteFile, + PartitionSpec spec, + Schema projection, + Map<Integer, ?> idToConstant) { + this.deleteFile = deleteFile; + this.spec = spec; + this.projection = projection; + this.idToConstant = idToConstant; + List<Long> pos = Lists.newArrayList(); + new BaseDeleteLoader(ignored -> inputFile) + .loadPositionDeletes(ImmutableList.of(deleteFile), deleteFile.referencedDataFile()) + .forEach(pos::add); + this.positions = pos.iterator(); + } + + @Override + public boolean hasNext() { + return positions.hasNext(); + } + + @Override + public InternalRow next() { + long position = positions.next(); + + if (null == row) { + List<Object> rowValues = Lists.newArrayList(); + for (Types.NestedField column : projection.columns()) { + int fieldId = column.fieldId(); + if (fieldId == MetadataColumns.DELETE_FILE_PATH.fieldId()) { + rowValues.add(UTF8String.fromString(deleteFile.referencedDataFile())); + } else if (fieldId == MetadataColumns.DELETE_FILE_POS.fieldId()) { + rowValues.add(position); + // remember the index where the deleted position needs to be set + deletedPositionIndex = rowValues.size() - 1; + } else if (fieldId == MetadataColumns.PARTITION_COLUMN_ID) { + rowValues.add(idToConstant.get(MetadataColumns.PARTITION_COLUMN_ID)); + } else if (fieldId == MetadataColumns.SPEC_ID_COLUMN_ID) { + rowValues.add(idToConstant.get(MetadataColumns.SPEC_ID_COLUMN_ID)); + } else if (fieldId == MetadataColumns.FILE_PATH_COLUMN_ID) { + rowValues.add(idToConstant.get(MetadataColumns.FILE_PATH_COLUMN_ID)); + } + } + + this.row = new GenericInternalRow(rowValues.toArray()); + } else if (null != deletedPositionIndex) { Review Comment: Having a case where `deletedPositionIndex` is `null` is still a valid case IMO. This would be true if a user doesn't project the `pos` column -- 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
