Java tutorial
/* * 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.ignite.internal.processors.hadoop.fs; import org.apache.hadoop.conf.*; import org.apache.hadoop.fs.*; import org.apache.hadoop.fs.local.*; import java.io.*; import java.net.*; import static org.apache.hadoop.fs.FsConstants.*; /** * Local file system replacement for Hadoop jobs. */ public class GridHadoopLocalFileSystemV2 extends ChecksumFs { /** * Creates new local file system. * * @param cfg Configuration. * @throws IOException If failed. * @throws URISyntaxException If failed. */ public GridHadoopLocalFileSystemV2(Configuration cfg) throws IOException, URISyntaxException { super(new DelegateFS(cfg)); } /** * Creates new local file system. * * @param uri URI. * @param cfg Configuration. * @throws IOException If failed. * @throws URISyntaxException If failed. */ public GridHadoopLocalFileSystemV2(URI uri, Configuration cfg) throws IOException, URISyntaxException { this(cfg); } /** * Delegate file system. */ private static class DelegateFS extends DelegateToFileSystem { /** * Creates new local file system. * * @param cfg Configuration. * @throws IOException If failed. * @throws URISyntaxException If failed. */ public DelegateFS(Configuration cfg) throws IOException, URISyntaxException { super(LOCAL_FS_URI, new GridHadoopRawLocalFileSystem(), cfg, LOCAL_FS_URI.getScheme(), false); } /** {@inheritDoc} */ @Override public int getUriDefaultPort() { return -1; } /** {@inheritDoc} */ @Override public FsServerDefaults getServerDefaults() throws IOException { return LocalConfigKeys.getServerDefaults(); } /** {@inheritDoc} */ @Override public boolean isValidName(String src) { return true; } } }