| /* |
| * 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.orc.tools; |
| |
| import java.io.IOException; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.LocatedFileStatus; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.RemoteIterator; |
| import org.apache.orc.OrcFile; |
| import org.apache.orc.Reader; |
| |
| /** |
| * Given a set of paths, finds all of the "*.orc" files under them and prints the number of rows in each file. |
| */ |
| public class RowCount { |
| public static void main(Configuration conf, String[] args) throws IOException { |
| int bad = 0; |
| for(String root: args) { |
| Path rootPath = new Path(root); |
| FileSystem fs = rootPath.getFileSystem(conf); |
| for(RemoteIterator<LocatedFileStatus> itr = fs.listFiles(rootPath, true); itr.hasNext(); ) { |
| LocatedFileStatus status = itr.next(); |
| if (status.isFile() && status.getPath().getName().endsWith(".orc")) { |
| Path filename = status.getPath(); |
| try (Reader reader = OrcFile.createReader(filename, OrcFile.readerOptions(conf))) { |
| System.out.println(String.format("%s %d", filename.toString(), reader.getNumberOfRows())); |
| } catch (IOException ioe) { |
| bad += 1; |
| System.err.println("Failed to read " + filename); |
| } |
| } |
| } |
| } |
| System.exit(bad == 0 ? 0 : 1); |
| } |
| |
| public static void main(String[] args) throws IOException { |
| main(new Configuration(), args); |
| } |
| } |