wgtmac commented on code in PR #1014: URL: https://github.com/apache/parquet-mr/pull/1014#discussion_r1065962705
########## parquet-hadoop/src/main/java/org/apache/parquet/hadoop/rewrite/RewriteOptions.java: ########## @@ -0,0 +1,178 @@ +/* + * 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.parquet.hadoop.rewrite; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.Path; +import org.apache.parquet.Preconditions; +import org.apache.parquet.crypto.FileEncryptionProperties; +import org.apache.parquet.hadoop.metadata.CompressionCodecName; + +import java.util.List; +import java.util.Map; + +// A set of options to create a ParquetRewriter. +public class RewriteOptions { + + final Configuration conf; + final Path inputFile; + final Path outputFile; + final List<String> pruneColumns; + final CompressionCodecName newCodecName; + final Map<String, MaskMode> maskColumns; + final List<String> encryptColumns; + final FileEncryptionProperties fileEncryptionProperties; + + private RewriteOptions(Configuration conf, + Path inputFile, + Path outputFile, + List<String> pruneColumns, + CompressionCodecName newCodecName, + Map<String, MaskMode> maskColumns, + List<String> encryptColumns, + FileEncryptionProperties fileEncryptionProperties) { + this.conf = conf; + this.inputFile = inputFile; + this.outputFile = outputFile; + this.pruneColumns = pruneColumns; + this.newCodecName = newCodecName; + this.maskColumns = maskColumns; + this.encryptColumns = encryptColumns; + this.fileEncryptionProperties = fileEncryptionProperties; + } + + public Configuration getConf() { + return conf; + } + + public Path getInputFile() { + return inputFile; + } + + public Path getOutputFile() { + return outputFile; + } + + public List<String> getPruneColumns() { + return pruneColumns; + } + + public CompressionCodecName getNewCodecName() { + return newCodecName; + } + + public Map<String, MaskMode> getMaskColumns() { + return maskColumns; + } + + public List<String> getEncryptColumns() { + return encryptColumns; + } + + public FileEncryptionProperties getFileEncryptionProperties() { + return fileEncryptionProperties; + } + + // Builder to create a RewriterOptions. + public static class Builder { + private Configuration conf; + private Path inputFile; + private Path outputFile; + private List<String> pruneColumns; + private CompressionCodecName newCodecName; + private Map<String, MaskMode> maskColumns; + private List<String> encryptColumns; + private FileEncryptionProperties fileEncryptionProperties; + + public Builder(Configuration conf, Path inputFile, Path outputFile) { + this.conf = conf; + this.inputFile = inputFile; + this.outputFile = outputFile; + } + + public Builder prune(List<String> columns) { + this.pruneColumns = columns; + return this; + } + + public Builder transform(CompressionCodecName newCodecName) { + this.newCodecName = newCodecName; + return this; + } + + public Builder mask(Map<String, MaskMode> maskColumns) { + this.maskColumns = maskColumns; + return this; + } + + public Builder encrypt(List<String> encryptColumns) { + this.encryptColumns = encryptColumns; + return this; + } + + public Builder encryptionProperties(FileEncryptionProperties fileEncryptionProperties) { + this.fileEncryptionProperties = fileEncryptionProperties; + return this; + } + + public RewriteOptions build() { + Preconditions.checkArgument(inputFile != null, "Input file is required"); + Preconditions.checkArgument(outputFile != null, "Output file is required"); + + if (pruneColumns != null) { + if (maskColumns != null) { + for (String pruneColumn : pruneColumns) { + Preconditions.checkArgument(!maskColumns.containsKey(pruneColumn), + "Cannot prune and mask same column"); + } + } + + if (encryptColumns != null) { + for (String pruneColumn : pruneColumns) { + Preconditions.checkArgument(!encryptColumns.contains(pruneColumn), + "Cannot prune and mask same column"); Review Comment: Yes, pruned column does not exist in the rewritten file. Then it does not make sense to encrypt the missing column any more. -- 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: dev-unsubscr...@parquet.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
