/* * 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.tools.command; import java.io.PrintWriter; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.Option; import org.apache.commons.cli.OptionBuilder; import org.apache.commons.cli.Options; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileStatus; import org.apache.hadoop.fs.Path; import org.apache.parquet.hadoop.Footer; import org.apache.parquet.hadoop.ParquetFileReader; import org.apache.parquet.hadoop.metadata.BlockMetaData; import org.apache.parquet.tools.Main; public class RowCountCommand extends ArgsOnlyCommand { private FileStatus[] inputFileStatuses; private Configuration conf; private Path inputPath; private PrintWriter out; public static final String[] USAGE = new String[] { "<input>", "where <input> is the parquet file to count rows to stdout" }; public static final Options OPTIONS; static { OPTIONS = new Options(); Option detailed = OptionBuilder.withLongOpt("detailed") .withDescription("Detailed rowcount of each matching file") .create('d'); OPTIONS.addOption(detailed); } public RowCountCommand() { super(1, 1); } @Override public Options getOptions() { return OPTIONS; } @Override public String[] getUsageDescription() { return USAGE; } @Override public String getCommandDescription() { return "Prints the count of rows in Parquet file(s)"; } @Override public void execute(CommandLine options) throws Exception { super.execute(options); String[] args = options.getArgs(); String input = args[0]; out = new PrintWriter(Main.out, true); inputPath = new Path(input); conf = new Configuration(); inputFileStatuses = inputPath.getFileSystem(conf).globStatus(inputPath); long rowCount = 0; for (FileStatus fs : inputFileStatuses) { long fileRowCount=0; for (Footer f : ParquetFileReader.readFooters(conf, fs, false)) { for (BlockMetaData b : f.getParquetMetadata().getBlocks()) { rowCount += b.getRowCount(); fileRowCount += b.getRowCount(); } } if (options.hasOption('d')) { out.format("%s row count: %d\n", fs.getPath().getName(), fileRowCount); } } out.format("Total RowCount: %d", rowCount); out.println(); } }