ignite-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From voze...@apache.org
Subject [45/46] ignite git commit: IGNITE-3953: Hadoop: Merged back both modules.
Date Mon, 26 Sep 2016 07:17:41 GMT
http://git-wip-us.apache.org/repos/asf/ignite/blob/4c1739ce/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java
----------------------------------------------------------------------
diff --git a/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java b/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java
deleted file mode 100644
index 7133c08..0000000
--- a/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/IgniteHadoopFileSystem.java
+++ /dev/null
@@ -1,1367 +0,0 @@
-/*
- * 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.hadoop.fs.v1;
-
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.BlockLocation;
-import org.apache.hadoop.fs.ContentSummary;
-import org.apache.hadoop.fs.FSDataInputStream;
-import org.apache.hadoop.fs.FSDataOutputStream;
-import org.apache.hadoop.fs.FileStatus;
-import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.InvalidPathException;
-import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.fs.permission.FsPermission;
-import org.apache.hadoop.hdfs.DFSUtil;
-import org.apache.hadoop.security.UserGroupInformation;
-import org.apache.hadoop.util.Progressable;
-import org.apache.ignite.IgniteCheckedException;
-import org.apache.ignite.IgniteException;
-import org.apache.ignite.configuration.FileSystemConfiguration;
-import org.apache.ignite.hadoop.fs.HadoopFileSystemFactory;
-import org.apache.ignite.hadoop.fs.IgniteHadoopIgfsSecondaryFileSystem;
-import org.apache.ignite.igfs.IgfsBlockLocation;
-import org.apache.ignite.igfs.IgfsException;
-import org.apache.ignite.igfs.IgfsFile;
-import org.apache.ignite.igfs.IgfsMode;
-import org.apache.ignite.igfs.IgfsPath;
-import org.apache.ignite.igfs.IgfsPathSummary;
-import org.apache.ignite.internal.igfs.common.IgfsLogger;
-import org.apache.ignite.internal.processors.hadoop.delegate.HadoopDelegateUtils;
-import org.apache.ignite.internal.processors.hadoop.delegate.HadoopFileSystemFactoryDelegate;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsInputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsOutputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsProxyInputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsProxyOutputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsStreamDelegate;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsWrapper;
-import org.apache.ignite.internal.processors.igfs.IgfsHandshakeResponse;
-import org.apache.ignite.internal.processors.igfs.IgfsModeResolver;
-import org.apache.ignite.internal.processors.igfs.IgfsPaths;
-import org.apache.ignite.internal.processors.igfs.IgfsUtils;
-import org.apache.ignite.internal.util.typedef.F;
-import org.apache.ignite.internal.util.typedef.T2;
-import org.apache.ignite.internal.util.typedef.X;
-import org.apache.ignite.internal.util.typedef.internal.A;
-import org.apache.ignite.internal.util.typedef.internal.S;
-import org.apache.ignite.internal.util.typedef.internal.U;
-import org.jetbrains.annotations.Nullable;
-
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.atomic.AtomicBoolean;
-
-import static org.apache.ignite.configuration.FileSystemConfiguration.DFLT_IGFS_LOG_BATCH_SIZE;
-import static org.apache.ignite.configuration.FileSystemConfiguration.DFLT_IGFS_LOG_DIR;
-import static org.apache.ignite.igfs.IgfsMode.PROXY;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_COLOCATED_WRITES;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_LOG_BATCH_SIZE;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_LOG_DIR;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_LOG_ENABLED;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_PREFER_LOCAL_WRITES;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_SEQ_READS_BEFORE_PREFETCH;
-import static org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsUtils.parameter;
-import static org.apache.ignite.internal.processors.igfs.IgfsEx.IGFS_SCHEME;
-
-/**
- * {@code IGFS} Hadoop 1.x file system driver over file system API. To use
- * {@code IGFS} as Hadoop file system, you should configure this class
- * in Hadoop's {@code core-site.xml} as follows:
- * <pre name="code" class="xml">
- *  &lt;property&gt;
- *      &lt;name&gt;fs.default.name&lt;/name&gt;
- *      &lt;value&gt;igfs:///&lt;/value&gt;
- *  &lt;/property&gt;
- *
- *  &lt;property&gt;
- *      &lt;name&gt;fs.igfs.impl&lt;/name&gt;
- *      &lt;value&gt;org.apache.ignite.hadoop.fs.v1.IgniteHadoopFileSystem&lt;/value&gt;
- *  &lt;/property&gt;
- * </pre>
- * You should also add Ignite JAR and all libraries to Hadoop classpath. To
- * do this, add following lines to {@code conf/hadoop-env.sh} script in Hadoop
- * distribution:
- * <pre name="code" class="bash">
- * export IGNITE_HOME=/path/to/Ignite/distribution
- * export HADOOP_CLASSPATH=$IGNITE_HOME/ignite*.jar
- *
- * for f in $IGNITE_HOME/libs/*.jar; do
- *  export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$f;
- * done
- * </pre>
- * <h1 class="header">Data vs Clients Nodes</h1>
- * Hadoop needs to use its FileSystem remotely from client nodes as well as directly on
- * data nodes. Client nodes are responsible for basic file system operations as well as
- * accessing data nodes remotely. Usually, client nodes are started together
- * with {@code job-submitter} or {@code job-scheduler} processes, while data nodes are usually
- * started together with Hadoop {@code task-tracker} processes.
- * <p>
- * For sample client and data node configuration refer to {@code config/hadoop/default-config-client.xml}
- * and {@code config/hadoop/default-config.xml} configuration files in Ignite installation.
- */
-public class IgniteHadoopFileSystem extends FileSystem {
-    /** Internal property to indicate management connection. */
-    public static final String IGFS_MANAGEMENT = "fs.igfs.management.connection";
-
-    /** Empty array of file block locations. */
-    private static final BlockLocation[] EMPTY_BLOCK_LOCATIONS = new BlockLocation[0];
-
-    /** Empty array of file statuses. */
-    public static final FileStatus[] EMPTY_FILE_STATUS = new FileStatus[0];
-
-    /** Ensures that close routine is invoked at most once. */
-    private final AtomicBoolean closeGuard = new AtomicBoolean();
-
-    /** Grid remote client. */
-    private HadoopIgfsWrapper rmtClient;
-
-    /** working directory. */
-    private Path workingDir;
-
-    /** Default replication factor. */
-    private short dfltReplication;
-
-    /** Base file system uri. */
-    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
-    private URI uri;
-
-    /** Authority. */
-    private String uriAuthority;
-
-    /** Client logger. */
-    private IgfsLogger clientLog;
-
-    /** Secondary URI string. */
-    private URI secondaryUri;
-
-    /** The user name this file system was created on behalf of. */
-    private String user;
-
-    /** IGFS mode resolver. */
-    private IgfsModeResolver modeRslvr;
-
-    /** The secondary file system factory. */
-    private HadoopFileSystemFactoryDelegate factory;
-
-    /** Management connection flag. */
-    private boolean mgmt;
-
-    /** Whether custom sequential reads before prefetch value is provided. */
-    private boolean seqReadsBeforePrefetchOverride;
-
-    /** IGFS group block size. */
-    private long igfsGrpBlockSize;
-
-    /** Flag that controls whether file writes should be colocated. */
-    private boolean colocateFileWrites;
-
-    /** Prefer local writes. */
-    private boolean preferLocFileWrites;
-
-    /** Custom-provided sequential reads before prefetch. */
-    private int seqReadsBeforePrefetch;
-
-    /** {@inheritDoc} */
-    @Override public URI getUri() {
-        if (uri == null)
-            throw new IllegalStateException("URI is null (was IgniteHadoopFileSystem properly initialized?).");
-
-        return uri;
-    }
-
-    /**
-     * Enter busy state.
-     *
-     * @throws IOException If file system is stopped.
-     */
-    private void enterBusy() throws IOException {
-        if (closeGuard.get())
-            throw new IOException("File system is stopped.");
-    }
-
-    /**
-     * Leave busy state.
-     */
-    private void leaveBusy() {
-        // No-op.
-    }
-
-    /**
-     * Gets non-null user name as per the Hadoop file system viewpoint.
-     * @return the user name, never null.
-     */
-    public static String getFsHadoopUser() throws IOException {
-        UserGroupInformation currUgi = UserGroupInformation.getCurrentUser();
-
-        String user = currUgi.getShortUserName();
-
-        user = IgfsUtils.fixUserName(user);
-
-        assert user != null;
-
-        return user;
-    }
-
-    /**
-     * Public setter that can be used by direct users of FS or Visor.
-     *
-     * @param colocateFileWrites Whether all ongoing file writes should be colocated.
-     */
-    @SuppressWarnings("UnusedDeclaration")
-    public void colocateFileWrites(boolean colocateFileWrites) {
-        this.colocateFileWrites = colocateFileWrites;
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("ConstantConditions")
-    @Override public void initialize(URI name, Configuration cfg) throws IOException {
-        enterBusy();
-
-        try {
-            if (rmtClient != null)
-                throw new IOException("File system is already initialized: " + rmtClient);
-
-            A.notNull(name, "name");
-            A.notNull(cfg, "cfg");
-
-            super.initialize(name, cfg);
-
-            setConf(cfg);
-
-            mgmt = cfg.getBoolean(IGFS_MANAGEMENT, false);
-
-            if (!IGFS_SCHEME.equals(name.getScheme()))
-                throw new IOException("Illegal file system URI [expected=" + IGFS_SCHEME +
-                    "://[name]/[optional_path], actual=" + name + ']');
-
-            uri = name;
-
-            uriAuthority = uri.getAuthority();
-
-            user = getFsHadoopUser();
-
-            // Override sequential reads before prefetch if needed.
-            seqReadsBeforePrefetch = parameter(cfg, PARAM_IGFS_SEQ_READS_BEFORE_PREFETCH, uriAuthority, 0);
-
-            if (seqReadsBeforePrefetch > 0)
-                seqReadsBeforePrefetchOverride = true;
-
-            // In Ignite replication factor is controlled by data cache affinity.
-            // We use replication factor to force the whole file to be stored on local node.
-            dfltReplication = (short)cfg.getInt("dfs.replication", 3);
-
-            // Get file colocation control flag.
-            colocateFileWrites = parameter(cfg, PARAM_IGFS_COLOCATED_WRITES, uriAuthority, false);
-            preferLocFileWrites = cfg.getBoolean(PARAM_IGFS_PREFER_LOCAL_WRITES, false);
-
-            // Get log directory.
-            String logDirCfg = parameter(cfg, PARAM_IGFS_LOG_DIR, uriAuthority, DFLT_IGFS_LOG_DIR);
-
-            File logDirFile = U.resolveIgnitePath(logDirCfg);
-
-            String logDir = logDirFile != null ? logDirFile.getAbsolutePath() : null;
-
-            rmtClient = new HadoopIgfsWrapper(uriAuthority, logDir, cfg, LOG, user);
-
-            // Handshake.
-            IgfsHandshakeResponse handshake = rmtClient.handshake(logDir);
-
-            igfsGrpBlockSize = handshake.blockSize();
-
-            IgfsPaths paths = handshake.secondaryPaths();
-
-            // Initialize client logger.
-            Boolean logEnabled = parameter(cfg, PARAM_IGFS_LOG_ENABLED, uriAuthority, false);
-
-            if (handshake.sampling() != null ? handshake.sampling() : logEnabled) {
-                // Initiate client logger.
-                if (logDir == null)
-                    throw new IOException("Failed to resolve log directory: " + logDirCfg);
-
-                Integer batchSize = parameter(cfg, PARAM_IGFS_LOG_BATCH_SIZE, uriAuthority, DFLT_IGFS_LOG_BATCH_SIZE);
-
-                clientLog = IgfsLogger.logger(uriAuthority, handshake.igfsName(), logDir, batchSize);
-            }
-            else
-                clientLog = IgfsLogger.disabledLogger();
-
-            try {
-                modeRslvr = new IgfsModeResolver(paths.defaultMode(), paths.pathModes());
-            }
-            catch (IgniteCheckedException ice) {
-                throw new IOException(ice);
-            }
-
-            boolean initSecondary = paths.defaultMode() == PROXY;
-
-            if (!initSecondary && paths.pathModes() != null && !paths.pathModes().isEmpty()) {
-                for (T2<IgfsPath, IgfsMode> pathMode : paths.pathModes()) {
-                    IgfsMode mode = pathMode.getValue();
-
-                    if (mode == PROXY) {
-                        initSecondary = true;
-
-                        break;
-                    }
-                }
-            }
-
-            if (initSecondary) {
-                try {
-                    HadoopFileSystemFactory factory0 =
-                        (HadoopFileSystemFactory)paths.getPayload(getClass().getClassLoader());
-
-                    factory = HadoopDelegateUtils.fileSystemFactoryDelegate(factory0);
-                }
-                catch (IgniteCheckedException e) {
-                    throw new IOException("Failed to get secondary file system factory.", e);
-                }
-
-                if (factory == null)
-                    throw new IOException("Failed to get secondary file system factory (did you set " +
-                        IgniteHadoopIgfsSecondaryFileSystem.class.getName() + " as \"secondaryFIleSystem\" in " +
-                        FileSystemConfiguration.class.getName() + "?)");
-
-                factory.start();
-
-                try {
-                    FileSystem secFs = (FileSystem)factory.get(user);
-
-                    secondaryUri = secFs.getUri();
-
-                    A.ensure(secondaryUri != null, "Secondary file system uri should not be null.");
-                }
-                catch (IOException e) {
-                    if (!mgmt)
-                        throw new IOException("Failed to connect to the secondary file system: " + secondaryUri, e);
-                    else
-                        LOG.warn("Visor failed to create secondary file system (operations on paths with PROXY mode " +
-                            "will have no effect): " + e.getMessage());
-                }
-            }
-
-            // set working directory to the home directory of the current Fs user:
-            setWorkingDirectory(null);
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override protected void checkPath(Path path) {
-        URI uri = path.toUri();
-
-        if (uri.isAbsolute()) {
-            if (!F.eq(uri.getScheme(), IGFS_SCHEME))
-                throw new InvalidPathException("Wrong path scheme [expected=" + IGFS_SCHEME + ", actual=" +
-                    uri.getAuthority() + ']');
-
-            if (!F.eq(uri.getAuthority(), uriAuthority))
-                throw new InvalidPathException("Wrong path authority [expected=" + uriAuthority + ", actual=" +
-                    uri.getAuthority() + ']');
-        }
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("deprecation")
-    @Override public short getDefaultReplication() {
-        return dfltReplication;
-    }
-
-    /** {@inheritDoc} */
-    @Override protected void finalize() throws Throwable {
-        super.finalize();
-
-        close();
-    }
-
-    /** {@inheritDoc} */
-    @Override public void close() throws IOException {
-        if (closeGuard.compareAndSet(false, true))
-            close0();
-    }
-
-    /**
-     * Closes file system.
-     *
-     * @throws IOException If failed.
-     */
-    private void close0() throws IOException {
-        if (LOG.isDebugEnabled())
-            LOG.debug("File system closed [uri=" + uri + ", endpoint=" + uriAuthority + ']');
-
-        if (rmtClient == null)
-            return;
-
-        super.close();
-
-        rmtClient.close(false);
-
-        if (clientLog.isLogEnabled())
-            clientLog.close();
-
-        if (factory != null)
-            factory.stop();
-
-        // Reset initialized resources.
-        uri = null;
-        rmtClient = null;
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setTimes(Path p, long mtime, long atime) throws IOException {
-        enterBusy();
-
-        try {
-            A.notNull(p, "p");
-
-            if (mode(p) == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    // No-op for management connection.
-                    return;
-                }
-
-                secondaryFs.setTimes(toSecondary(p), mtime, atime);
-            }
-            else {
-                IgfsPath path = convert(p);
-
-                rmtClient.setTimes(path, atime, mtime);
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setPermission(Path p, FsPermission perm) throws IOException {
-        enterBusy();
-
-        try {
-            A.notNull(p, "p");
-
-            if (mode(p) == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    // No-op for management connection.
-                    return;
-                }
-
-                secondaryFs.setPermission(toSecondary(p), perm);
-            }
-            else if (rmtClient.update(convert(p), permission(perm)) == null) {
-                throw new IOException("Failed to set file permission (file not found?)" +
-                    " [path=" + p + ", perm=" + perm + ']');
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setOwner(Path p, String username, String grpName) throws IOException {
-        A.notNull(p, "p");
-        A.notNull(username, "username");
-        A.notNull(grpName, "grpName");
-
-        enterBusy();
-
-        try {
-            if (mode(p) == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    // No-op for management connection.
-                    return;
-                }
-
-                secondaryFs.setOwner(toSecondary(p), username, grpName);
-            }
-            else if (rmtClient.update(convert(p), F.asMap(IgfsUtils.PROP_USER_NAME, username,
-                IgfsUtils.PROP_GROUP_NAME, grpName)) == null) {
-                throw new IOException("Failed to set file permission (file not found?)" +
-                    " [path=" + p + ", userName=" + username + ", groupName=" + grpName + ']');
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public FSDataInputStream open(Path f, int bufSize) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = mode(path);
-
-            if (mode == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    throw new IOException("Failed to open file (secondary file system is not initialized): " + f);
-                }
-
-                FSDataInputStream is = secondaryFs.open(toSecondary(f), bufSize);
-
-                if (clientLog.isLogEnabled()) {
-                    // At this point we do not know file size, so we perform additional request to remote FS to get it.
-                    FileStatus status = secondaryFs.getFileStatus(toSecondary(f));
-
-                    long size = status != null ? status.getLen() : -1;
-
-                    long logId = IgfsLogger.nextId();
-
-                    clientLog.logOpen(logId, path, PROXY, bufSize, size);
-
-                    return new FSDataInputStream(new HadoopIgfsProxyInputStream(is, clientLog, logId));
-                }
-                else
-                    return is;
-            }
-            else {
-                HadoopIgfsStreamDelegate stream = seqReadsBeforePrefetchOverride ?
-                    rmtClient.open(path, seqReadsBeforePrefetch) : rmtClient.open(path);
-
-                long logId = -1;
-
-                if (clientLog.isLogEnabled()) {
-                    logId = IgfsLogger.nextId();
-
-                    clientLog.logOpen(logId, path, mode, bufSize, stream.length());
-                }
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Opening input stream [thread=" + Thread.currentThread().getName() + ", path=" + path +
-                        ", bufSize=" + bufSize + ']');
-
-                HadoopIgfsInputStream igfsIn = new HadoopIgfsInputStream(stream, stream.length(),
-                    bufSize, LOG, clientLog, logId);
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Opened input stream [path=" + path + ", delegate=" + stream + ']');
-
-                return new FSDataInputStream(igfsIn);
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("deprecation")
-    @Override public FSDataOutputStream create(Path f, final FsPermission perm, boolean overwrite, int bufSize,
-        short replication, long blockSize, Progressable progress) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        OutputStream out = null;
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = mode(path);
-
-            if (LOG.isDebugEnabled())
-                LOG.debug("Opening output stream in create [thread=" + Thread.currentThread().getName() + "path=" +
-                    path + ", overwrite=" + overwrite + ", bufSize=" + bufSize + ']');
-
-            if (mode == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    throw new IOException("Failed to create file (secondary file system is not initialized): " + f);
-                }
-
-                FSDataOutputStream os =
-                    secondaryFs.create(toSecondary(f), perm, overwrite, bufSize, replication, blockSize, progress);
-
-                if (clientLog.isLogEnabled()) {
-                    long logId = IgfsLogger.nextId();
-
-                    clientLog.logCreate(logId, path, PROXY, overwrite, bufSize, replication, blockSize);
-
-                    return new FSDataOutputStream(new HadoopIgfsProxyOutputStream(os, clientLog, logId));
-                }
-                else
-                    return os;
-            }
-            else {
-                Map<String,String> propMap = permission(perm);
-
-                propMap.put(IgfsUtils.PROP_PREFER_LOCAL_WRITES, Boolean.toString(preferLocFileWrites));
-
-                // Create stream and close it in the 'finally' section if any sequential operation failed.
-                HadoopIgfsStreamDelegate stream = rmtClient.create(path, overwrite, colocateFileWrites,
-                    replication, blockSize, propMap);
-
-                assert stream != null;
-
-                long logId = -1;
-
-                if (clientLog.isLogEnabled()) {
-                    logId = IgfsLogger.nextId();
-
-                    clientLog.logCreate(logId, path, mode, overwrite, bufSize, replication, blockSize);
-                }
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Opened output stream in create [path=" + path + ", delegate=" + stream + ']');
-
-                HadoopIgfsOutputStream igfsOut = new HadoopIgfsOutputStream(stream, LOG, clientLog,
-                    logId);
-
-                bufSize = Math.max(64 * 1024, bufSize);
-
-                out = new BufferedOutputStream(igfsOut, bufSize);
-
-                FSDataOutputStream res = new FSDataOutputStream(out, null, 0);
-
-                // Mark stream created successfully.
-                out = null;
-
-                return res;
-            }
-        }
-        finally {
-            // Close if failed during stream creation.
-            if (out != null)
-                U.closeQuiet(out);
-
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("deprecation")
-    @Override public FSDataOutputStream append(Path f, int bufSize, Progressable progress) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = mode(path);
-
-            if (LOG.isDebugEnabled())
-                LOG.debug("Opening output stream in append [thread=" + Thread.currentThread().getName() +
-                    ", path=" + path + ", bufSize=" + bufSize + ']');
-
-            if (mode == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    throw new IOException("Failed to append file (secondary file system is not initialized): " + f);
-                }
-
-                FSDataOutputStream os = secondaryFs.append(toSecondary(f), bufSize, progress);
-
-                if (clientLog.isLogEnabled()) {
-                    long logId = IgfsLogger.nextId();
-
-                    clientLog.logAppend(logId, path, PROXY, bufSize); // Don't have stream ID.
-
-                    return new FSDataOutputStream(new HadoopIgfsProxyOutputStream(os, clientLog, logId));
-                }
-                else
-                    return os;
-            }
-            else {
-                HadoopIgfsStreamDelegate stream = rmtClient.append(path, false, null);
-
-                assert stream != null;
-
-                long logId = -1;
-
-                if (clientLog.isLogEnabled()) {
-                    logId = IgfsLogger.nextId();
-
-                    clientLog.logAppend(logId, path, mode, bufSize);
-                }
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Opened output stream in append [path=" + path + ", delegate=" + stream + ']');
-
-                HadoopIgfsOutputStream igfsOut = new HadoopIgfsOutputStream(stream, LOG, clientLog,
-                    logId);
-
-                bufSize = Math.max(64 * 1024, bufSize);
-
-                BufferedOutputStream out = new BufferedOutputStream(igfsOut, bufSize);
-
-                return new FSDataOutputStream(out, null, 0);
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("unchecked")
-    @Override public boolean rename(Path src, Path dst) throws IOException {
-        A.notNull(src, "src");
-        A.notNull(dst, "dst");
-
-        enterBusy();
-
-        try {
-            IgfsPath srcPath = convert(src);
-            IgfsPath dstPath = convert(dst);
-            IgfsMode mode = mode(srcPath);
-
-            if (mode == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    return false;
-                }
-
-                if (clientLog.isLogEnabled())
-                    clientLog.logRename(srcPath, PROXY, dstPath);
-
-                return secondaryFs.rename(toSecondary(src), toSecondary(dst));
-            }
-            else {
-                if (clientLog.isLogEnabled())
-                    clientLog.logRename(srcPath, mode, dstPath);
-
-                try {
-                    rmtClient.rename(srcPath, dstPath);
-                }
-                catch (IOException ioe) {
-                    // Log the exception before rethrowing since it may be ignored:
-                    LOG.warn("Failed to rename [srcPath=" + srcPath + ", dstPath=" + dstPath + ", mode=" + mode + ']',
-                        ioe);
-
-                    throw ioe;
-                }
-
-                return true;
-            }
-        }
-        catch (IOException e) {
-            // Intentionally ignore IGFS exceptions here to follow Hadoop contract.
-            if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null ||
-                !X.hasCause(e.getCause(), IgfsException.class)))
-                throw e;
-            else
-                return false;
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("deprecation")
-    @Override public boolean delete(Path f) throws IOException {
-        return delete(f, false);
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("unchecked")
-    @Override public boolean delete(Path f, boolean recursive) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = mode(path);
-
-            if (mode == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    return false;
-                }
-
-                if (clientLog.isLogEnabled())
-                    clientLog.logDelete(path, PROXY, recursive);
-
-                return secondaryFs.delete(toSecondary(f), recursive);
-            }
-            else {
-                // Will throw exception if delete failed.
-                boolean res = rmtClient.delete(path, recursive);
-
-                if (clientLog.isLogEnabled())
-                    clientLog.logDelete(path, mode, recursive);
-
-                return res;
-            }
-        }
-        catch (IOException e) {
-            // Intentionally ignore IGFS exceptions here to follow Hadoop contract.
-            if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null ||
-                !X.hasCause(e.getCause(), IgfsException.class)))
-                throw e;
-            else
-                return false;
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public FileStatus[] listStatus(Path f) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = mode(path);
-
-            if (mode == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    return EMPTY_FILE_STATUS;
-                }
-
-                FileStatus[] arr = secondaryFs.listStatus(toSecondary(f));
-
-                if (arr == null)
-                    throw new FileNotFoundException("File " + f + " does not exist.");
-
-                for (int i = 0; i < arr.length; i++)
-                    arr[i] = toPrimary(arr[i]);
-
-                if (clientLog.isLogEnabled()) {
-                    String[] fileArr = new String[arr.length];
-
-                    for (int i = 0; i < arr.length; i++)
-                        fileArr[i] = arr[i].getPath().toString();
-
-                    clientLog.logListDirectory(path, PROXY, fileArr);
-                }
-
-                return arr;
-            }
-            else {
-                Collection<IgfsFile> list = rmtClient.listFiles(path);
-
-                if (list == null)
-                    throw new FileNotFoundException("File " + f + " does not exist.");
-
-                List<IgfsFile> files = new ArrayList<>(list);
-
-                FileStatus[] arr = new FileStatus[files.size()];
-
-                for (int i = 0; i < arr.length; i++)
-                    arr[i] = convert(files.get(i));
-
-                if (clientLog.isLogEnabled()) {
-                    String[] fileArr = new String[arr.length];
-
-                    for (int i = 0; i < arr.length; i++)
-                        fileArr[i] = arr[i].getPath().toString();
-
-                    clientLog.logListDirectory(path, mode, fileArr);
-                }
-
-                return arr;
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public Path getHomeDirectory() {
-        Path path = new Path("/user/" + user);
-
-        return path.makeQualified(getUri(), null);
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setWorkingDirectory(Path newPath) {
-        try {
-            if (newPath == null) {
-                Path homeDir = getHomeDirectory();
-
-                FileSystem secondaryFs  = secondaryFileSystem();
-
-                if (secondaryFs != null)
-                    secondaryFs.setWorkingDirectory(toSecondary(homeDir));
-
-                workingDir = homeDir;
-            }
-            else {
-                Path fixedNewPath = fixRelativePart(newPath);
-
-                String res = fixedNewPath.toUri().getPath();
-
-                if (!DFSUtil.isValidName(res))
-                    throw new IllegalArgumentException("Invalid DFS directory name " + res);
-
-                FileSystem secondaryFs  = secondaryFileSystem();
-
-                if (secondaryFs != null)
-                    secondaryFs.setWorkingDirectory(toSecondary(fixedNewPath));
-
-                workingDir = fixedNewPath;
-            }
-        }
-        catch (IOException e) {
-            throw new RuntimeException("Failed to obtain secondary file system instance.", e);
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public Path getWorkingDirectory() {
-        return workingDir;
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("unchecked")
-    @Override public boolean mkdirs(Path f, FsPermission perm) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = mode(path);
-
-            if (mode == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    return false;
-                }
-
-                if (clientLog.isLogEnabled())
-                    clientLog.logMakeDirectory(path, PROXY);
-
-                return secondaryFs.mkdirs(toSecondary(f), perm);
-            }
-            else {
-                boolean mkdirRes = rmtClient.mkdirs(path, permission(perm));
-
-                if (clientLog.isLogEnabled())
-                    clientLog.logMakeDirectory(path, mode);
-
-                return mkdirRes;
-            }
-        }
-        catch (IOException e) {
-            // Intentionally ignore IGFS exceptions here to follow Hadoop contract.
-            if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null ||
-                !X.hasCause(e.getCause(), IgfsException.class)))
-                throw e;
-            else
-                return false;
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public FileStatus getFileStatus(Path f) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            if (mode(f) == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    throw new IOException("Failed to get file status (secondary file system is not initialized): " + f);
-                }
-
-                return toPrimary(secondaryFs.getFileStatus(toSecondary(f)));
-            }
-            else {
-                IgfsFile info = rmtClient.info(convert(f));
-
-                if (info == null)
-                    throw new FileNotFoundException("File not found: " + f);
-
-                return convert(info);
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public ContentSummary getContentSummary(Path f) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            if (mode(f) == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    throw new IOException("Failed to get content summary (secondary file system is not initialized): " +
-                        f);
-                }
-
-                return secondaryFs.getContentSummary(toSecondary(f));
-            }
-            else {
-                IgfsPathSummary sum = rmtClient.contentSummary(convert(f));
-
-                return new ContentSummary(sum.totalLength(), sum.filesCount(), sum.directoriesCount(),
-                    -1, sum.totalLength(), rmtClient.fsStatus().spaceTotal());
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public BlockLocation[] getFileBlockLocations(FileStatus status, long start, long len) throws IOException {
-        A.notNull(status, "status");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(status.getPath());
-
-            if (mode(status.getPath()) == PROXY) {
-                final FileSystem secondaryFs = secondaryFileSystem();
-
-                if (secondaryFs == null) {
-                    assert mgmt;
-
-                    return EMPTY_BLOCK_LOCATIONS;
-                }
-
-                Path secPath = toSecondary(status.getPath());
-
-                return secondaryFs.getFileBlockLocations(secondaryFs.getFileStatus(secPath), start, len);
-            }
-            else {
-                long now = System.currentTimeMillis();
-
-                List<IgfsBlockLocation> affinity = new ArrayList<>(rmtClient.affinity(path, start, len));
-
-                BlockLocation[] arr = new BlockLocation[affinity.size()];
-
-                for (int i = 0; i < arr.length; i++)
-                    arr[i] = convert(affinity.get(i));
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Fetched file locations [path=" + path + ", fetchTime=" +
-                        (System.currentTimeMillis() - now) + ", locations=" + Arrays.asList(arr) + ']');
-
-                return arr;
-            }
-        }
-        catch (FileNotFoundException ignored) {
-            return EMPTY_BLOCK_LOCATIONS;
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("deprecation")
-    @Override public long getDefaultBlockSize() {
-        return igfsGrpBlockSize;
-    }
-
-    /**
-     * Resolve path mode.
-     *
-     * @param path HDFS path.
-     * @return Path mode.
-     */
-    public IgfsMode mode(Path path) {
-        return mode(convert(path));
-    }
-
-    /**
-     * Resolve path mode.
-     *
-     * @param path IGFS path.
-     * @return Path mode.
-     */
-    public IgfsMode mode(IgfsPath path) {
-        return modeRslvr.resolveMode(path);
-    }
-
-    /**
-     * @return {@code true} If secondary file system is initialized.
-     */
-    public boolean hasSecondaryFileSystem() {
-        return factory != null;
-    }
-
-    /**
-     * Convert the given path to path acceptable by the primary file system.
-     *
-     * @param path Path.
-     * @return Primary file system path.
-     */
-    private Path toPrimary(Path path) {
-        return convertPath(path, uri);
-    }
-
-    /**
-     * Convert the given path to path acceptable by the secondary file system.
-     *
-     * @param path Path.
-     * @return Secondary file system path.
-     */
-    private Path toSecondary(Path path) {
-        assert factory != null;
-        assert secondaryUri != null;
-
-        return convertPath(path, secondaryUri);
-    }
-
-    /**
-     * Convert path using the given new URI.
-     *
-     * @param path Old path.
-     * @param newUri New URI.
-     * @return New path.
-     */
-    private Path convertPath(Path path, URI newUri) {
-        assert newUri != null;
-
-        if (path != null) {
-            URI pathUri = path.toUri();
-
-            try {
-                return new Path(new URI(pathUri.getScheme() != null ? newUri.getScheme() : null,
-                    pathUri.getAuthority() != null ? newUri.getAuthority() : null, pathUri.getPath(), null, null));
-            }
-            catch (URISyntaxException e) {
-                throw new IgniteException("Failed to construct secondary file system path from the primary file " +
-                    "system path: " + path, e);
-            }
-        }
-        else
-            return null;
-    }
-
-    /**
-     * Convert a file status obtained from the secondary file system to a status of the primary file system.
-     *
-     * @param status Secondary file system status.
-     * @return Primary file system status.
-     */
-    @SuppressWarnings("deprecation")
-    private FileStatus toPrimary(FileStatus status) {
-        return status != null ? new FileStatus(status.getLen(), status.isDir(), status.getReplication(),
-            status.getBlockSize(), status.getModificationTime(), status.getAccessTime(), status.getPermission(),
-            status.getOwner(), status.getGroup(), toPrimary(status.getPath())) : null;
-    }
-
-    /**
-     * Convert IGFS path into Hadoop path.
-     *
-     * @param path IGFS path.
-     * @return Hadoop path.
-     */
-    private Path convert(IgfsPath path) {
-        return new Path(IGFS_SCHEME, uriAuthority, path.toString());
-    }
-
-    /**
-     * Convert Hadoop path into IGFS path.
-     *
-     * @param path Hadoop path.
-     * @return IGFS path.
-     */
-    @Nullable private IgfsPath convert(@Nullable Path path) {
-        if (path == null)
-            return null;
-
-        return path.isAbsolute() ? new IgfsPath(path.toUri().getPath()) :
-            new IgfsPath(convert(workingDir), path.toUri().getPath());
-    }
-
-    /**
-     * Convert IGFS affinity block location into Hadoop affinity block location.
-     *
-     * @param block IGFS affinity block location.
-     * @return Hadoop affinity block location.
-     */
-    private BlockLocation convert(IgfsBlockLocation block) {
-        Collection<String> names = block.names();
-        Collection<String> hosts = block.hosts();
-
-        return new BlockLocation(
-            names.toArray(new String[names.size()]) /* hostname:portNumber of data nodes */,
-            hosts.toArray(new String[hosts.size()]) /* hostnames of data nodes */,
-            block.start(), block.length()
-        ) {
-            @Override public String toString() {
-                try {
-                    return "BlockLocation [offset=" + getOffset() + ", length=" + getLength() +
-                        ", hosts=" + Arrays.asList(getHosts()) + ", names=" + Arrays.asList(getNames()) + ']';
-                }
-                catch (IOException e) {
-                    throw new RuntimeException(e);
-                }
-            }
-        };
-    }
-
-    /**
-     * Convert IGFS file information into Hadoop file status.
-     *
-     * @param file IGFS file information.
-     * @return Hadoop file status.
-     */
-    @SuppressWarnings("deprecation")
-    private FileStatus convert(IgfsFile file) {
-        return new FileStatus(
-            file.length(),
-            file.isDirectory(),
-            getDefaultReplication(),
-            file.groupBlockSize(),
-            file.modificationTime(),
-            file.accessTime(),
-            permission(file),
-            file.property(IgfsUtils.PROP_USER_NAME, user),
-            file.property(IgfsUtils.PROP_GROUP_NAME, "users"),
-            convert(file.path())) {
-            @Override public String toString() {
-                return "FileStatus [path=" + getPath() + ", isDir=" + isDir() + ", len=" + getLen() +
-                    ", mtime=" + getModificationTime() + ", atime=" + getAccessTime() + ']';
-            }
-        };
-    }
-
-    /**
-     * Convert Hadoop permission into IGFS file attribute.
-     *
-     * @param perm Hadoop permission.
-     * @return IGFS attributes.
-     */
-    private Map<String, String> permission(FsPermission perm) {
-        if (perm == null)
-            perm = FsPermission.getDefault();
-
-        return F.asMap(IgfsUtils.PROP_PERMISSION, toString(perm));
-    }
-
-    /**
-     * @param perm Permission.
-     * @return String.
-     */
-    private static String toString(FsPermission perm) {
-        return String.format("%04o", perm.toShort());
-    }
-
-    /**
-     * Convert IGFS file attributes into Hadoop permission.
-     *
-     * @param file File info.
-     * @return Hadoop permission.
-     */
-    private FsPermission permission(IgfsFile file) {
-        String perm = file.property(IgfsUtils.PROP_PERMISSION, null);
-
-        if (perm == null)
-            return FsPermission.getDefault();
-
-        try {
-            return new FsPermission((short)Integer.parseInt(perm, 8));
-        }
-        catch (NumberFormatException ignore) {
-            return FsPermission.getDefault();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public String toString() {
-        return S.toString(IgniteHadoopFileSystem.class, this);
-    }
-
-    /**
-     * Returns the user name this File System is created on behalf of.
-     * @return the user name
-     */
-    public String user() {
-        return user;
-    }
-
-    /**
-     * Gets cached or creates a {@link FileSystem}.
-     *
-     * @return The secondary file system.
-     */
-    private @Nullable FileSystem secondaryFileSystem() throws IOException{
-        if (factory == null)
-            return null;
-
-        return (FileSystem)factory.get(user);
-    }
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/4c1739ce/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/package-info.java
----------------------------------------------------------------------
diff --git a/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/package-info.java b/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/package-info.java
deleted file mode 100644
index 60e62ca..0000000
--- a/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v1/package-info.java
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * 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 description. -->
- * Contains Ignite Hadoop 1.x <code>FileSystem</code> implementation.
- */
-package org.apache.ignite.hadoop.fs.v1;
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/4c1739ce/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java
----------------------------------------------------------------------
diff --git a/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java b/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java
deleted file mode 100644
index 18b8bf9..0000000
--- a/modules/hadoop-impl/src/main/java/org/apache/ignite/hadoop/fs/v2/IgniteHadoopFileSystem.java
+++ /dev/null
@@ -1,1079 +0,0 @@
-/*
- * 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.hadoop.fs.v2;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.AbstractFileSystem;
-import org.apache.hadoop.fs.BlockLocation;
-import org.apache.hadoop.fs.CreateFlag;
-import org.apache.hadoop.fs.FSDataInputStream;
-import org.apache.hadoop.fs.FSDataOutputStream;
-import org.apache.hadoop.fs.FileChecksum;
-import org.apache.hadoop.fs.FileStatus;
-import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.FsServerDefaults;
-import org.apache.hadoop.fs.FsStatus;
-import org.apache.hadoop.fs.InvalidPathException;
-import org.apache.hadoop.fs.Options;
-import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.fs.permission.FsPermission;
-import org.apache.hadoop.util.DataChecksum;
-import org.apache.hadoop.util.Progressable;
-import org.apache.ignite.IgniteCheckedException;
-import org.apache.ignite.IgniteException;
-import org.apache.ignite.configuration.FileSystemConfiguration;
-import org.apache.ignite.hadoop.fs.HadoopFileSystemFactory;
-import org.apache.ignite.hadoop.fs.IgniteHadoopIgfsSecondaryFileSystem;
-import org.apache.ignite.igfs.IgfsBlockLocation;
-import org.apache.ignite.igfs.IgfsFile;
-import org.apache.ignite.igfs.IgfsMode;
-import org.apache.ignite.igfs.IgfsPath;
-import org.apache.ignite.internal.igfs.common.IgfsLogger;
-import org.apache.ignite.internal.processors.hadoop.delegate.HadoopDelegateUtils;
-import org.apache.ignite.internal.processors.hadoop.delegate.HadoopFileSystemFactoryDelegate;
-import org.apache.ignite.internal.processors.hadoop.igfs.HadoopIgfsEndpoint;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsInputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsOutputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsProxyInputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsProxyOutputStream;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsStreamDelegate;
-import org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsWrapper;
-import org.apache.ignite.internal.processors.igfs.IgfsHandshakeResponse;
-import org.apache.ignite.internal.processors.igfs.IgfsModeResolver;
-import org.apache.ignite.internal.processors.igfs.IgfsPaths;
-import org.apache.ignite.internal.processors.igfs.IgfsStatus;
-import org.apache.ignite.internal.processors.igfs.IgfsUtils;
-import org.apache.ignite.internal.util.typedef.F;
-import org.apache.ignite.internal.util.typedef.T2;
-import org.apache.ignite.internal.util.typedef.internal.A;
-import org.apache.ignite.internal.util.typedef.internal.S;
-import org.apache.ignite.internal.util.typedef.internal.U;
-import org.jetbrains.annotations.Nullable;
-
-import java.io.BufferedOutputStream;
-import java.io.Closeable;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.EnumSet;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.atomic.AtomicBoolean;
-
-import static org.apache.ignite.configuration.FileSystemConfiguration.DFLT_IGFS_LOG_BATCH_SIZE;
-import static org.apache.ignite.configuration.FileSystemConfiguration.DFLT_IGFS_LOG_DIR;
-import static org.apache.ignite.hadoop.fs.v1.IgniteHadoopFileSystem.getFsHadoopUser;
-import static org.apache.ignite.igfs.IgfsMode.PROXY;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_COLOCATED_WRITES;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_LOG_BATCH_SIZE;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_LOG_DIR;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_LOG_ENABLED;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_PREFER_LOCAL_WRITES;
-import static org.apache.ignite.internal.processors.hadoop.impl.fs.HadoopParameters.PARAM_IGFS_SEQ_READS_BEFORE_PREFETCH;
-import static org.apache.ignite.internal.processors.hadoop.impl.igfs.HadoopIgfsUtils.parameter;
-import static org.apache.ignite.internal.processors.igfs.IgfsEx.IGFS_SCHEME;
-
-/**
- * {@code IGFS} Hadoop 2.x file system driver over file system API. To use
- * {@code IGFS} as Hadoop file system, you should configure this class
- * in Hadoop's {@code core-site.xml} as follows:
- * <pre name="code" class="xml">
- *  &lt;property&gt;
- *      &lt;name&gt;fs.default.name&lt;/name&gt;
- *      &lt;value&gt;igfs://ipc&lt;/value&gt;
- *  &lt;/property&gt;
- *
- *  &lt;property&gt;
- *      &lt;name&gt;fs.igfs.impl&lt;/name&gt;
- *      &lt;value&gt;org.apache.ignite.hadoop.fs.v2.IgniteHadoopFileSystem&lt;/value&gt;
- *  &lt;/property&gt;
- * </pre>
- * You should also add Ignite JAR and all libraries to Hadoop classpath. To
- * do this, add following lines to {@code conf/hadoop-env.sh} script in Hadoop
- * distribution:
- * <pre name="code" class="bash">
- * export IGNITE_HOME=/path/to/Ignite/distribution
- * export HADOOP_CLASSPATH=$IGNITE_HOME/ignite*.jar
- *
- * for f in $IGNITE_HOME/libs/*.jar; do
- *  export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$f;
- * done
- * </pre>
- * <h1 class="header">Data vs Clients Nodes</h1>
- * Hadoop needs to use its FileSystem remotely from client nodes as well as directly on
- * data nodes. Client nodes are responsible for basic file system operations as well as
- * accessing data nodes remotely. Usually, client nodes are started together
- * with {@code job-submitter} or {@code job-scheduler} processes, while data nodes are usually
- * started together with Hadoop {@code task-tracker} processes.
- * <p>
- * For sample client and data node configuration refer to {@code config/hadoop/default-config-client.xml}
- * and {@code config/hadoop/default-config.xml} configuration files in Ignite installation.
- */
-public class IgniteHadoopFileSystem extends AbstractFileSystem implements Closeable {
-    /** Logger. */
-    private static final Log LOG = LogFactory.getLog(IgniteHadoopFileSystem.class);
-
-    /** Ensures that close routine is invoked at most once. */
-    private final AtomicBoolean closeGuard = new AtomicBoolean();
-
-    /** Grid remote client. */
-    private HadoopIgfsWrapper rmtClient;
-
-    /** The name of the user this File System created on behalf of. */
-    private final String user;
-
-    /** Working directory. */
-    private IgfsPath workingDir;
-
-    /** URI. */
-    private final URI uri;
-
-    /** Authority. */
-    private String uriAuthority;
-
-    /** Client logger. */
-    private IgfsLogger clientLog;
-
-    /** Server block size. */
-    private long grpBlockSize;
-
-    /** Default replication factor. */
-    private short dfltReplication;
-
-    /** Secondary URI string. */
-    private URI secondaryUri;
-
-    /** Mode resolver. */
-    private IgfsModeResolver modeRslvr;
-
-    /** The secondary file system factory. */
-    private HadoopFileSystemFactoryDelegate factory;
-
-    /** Whether custom sequential reads before prefetch value is provided. */
-    private boolean seqReadsBeforePrefetchOverride;
-
-    /** Custom-provided sequential reads before prefetch. */
-    private int seqReadsBeforePrefetch;
-
-    /** Flag that controls whether file writes should be colocated on data node. */
-    private boolean colocateFileWrites;
-
-    /** Prefer local writes. */
-    private boolean preferLocFileWrites;
-
-    /**
-     * @param name URI for file system.
-     * @param cfg Configuration.
-     * @throws URISyntaxException if name has invalid syntax.
-     * @throws IOException If initialization failed.
-     */
-    public IgniteHadoopFileSystem(URI name, Configuration cfg) throws URISyntaxException, IOException {
-        super(HadoopIgfsEndpoint.normalize(name), IGFS_SCHEME, false, -1);
-
-        uri = name;
-
-        user = getFsHadoopUser();
-
-        try {
-            initialize(name, cfg);
-        }
-        catch (IOException e) {
-            // Close client if exception occurred.
-            if (rmtClient != null)
-                rmtClient.close(false);
-
-            throw e;
-        }
-
-        workingDir = new IgfsPath("/user/" + user);
-    }
-
-    /** {@inheritDoc} */
-    @Override public void checkPath(Path path) {
-        URI uri = path.toUri();
-
-        if (uri.isAbsolute()) {
-            if (!F.eq(uri.getScheme(), IGFS_SCHEME))
-                throw new InvalidPathException("Wrong path scheme [expected=" + IGFS_SCHEME + ", actual=" +
-                    uri.getAuthority() + ']');
-
-            if (!F.eq(uri.getAuthority(), uriAuthority))
-                throw new InvalidPathException("Wrong path authority [expected=" + uriAuthority + ", actual=" +
-                    uri.getAuthority() + ']');
-        }
-    }
-
-    /**
-     * Public setter that can be used by direct users of FS or Visor.
-     *
-     * @param colocateFileWrites Whether all ongoing file writes should be colocated.
-     */
-    @SuppressWarnings("UnusedDeclaration")
-    public void colocateFileWrites(boolean colocateFileWrites) {
-        this.colocateFileWrites = colocateFileWrites;
-    }
-
-    /**
-     * Enter busy state.
-     *
-     * @throws IOException If file system is stopped.
-     */
-    private void enterBusy() throws IOException {
-        if (closeGuard.get())
-            throw new IOException("File system is stopped.");
-    }
-
-    /**
-     * Leave busy state.
-     */
-    private void leaveBusy() {
-        // No-op.
-    }
-
-    /**
-     * @param name URI passed to constructor.
-     * @param cfg Configuration passed to constructor.
-     * @throws IOException If initialization failed.
-     */
-    @SuppressWarnings("ConstantConditions")
-    private void initialize(URI name, Configuration cfg) throws IOException {
-        enterBusy();
-
-        try {
-            if (rmtClient != null)
-                throw new IOException("File system is already initialized: " + rmtClient);
-
-            A.notNull(name, "name");
-            A.notNull(cfg, "cfg");
-
-            if (!IGFS_SCHEME.equals(name.getScheme()))
-                throw new IOException("Illegal file system URI [expected=" + IGFS_SCHEME +
-                    "://[name]/[optional_path], actual=" + name + ']');
-
-            uriAuthority = name.getAuthority();
-
-            // Override sequential reads before prefetch if needed.
-            seqReadsBeforePrefetch = parameter(cfg, PARAM_IGFS_SEQ_READS_BEFORE_PREFETCH, uriAuthority, 0);
-
-            if (seqReadsBeforePrefetch > 0)
-                seqReadsBeforePrefetchOverride = true;
-
-            // In Ignite replication factor is controlled by data cache affinity.
-            // We use replication factor to force the whole file to be stored on local node.
-            dfltReplication = (short)cfg.getInt("dfs.replication", 3);
-
-            // Get file colocation control flag.
-            colocateFileWrites = parameter(cfg, PARAM_IGFS_COLOCATED_WRITES, uriAuthority, false);
-            preferLocFileWrites = cfg.getBoolean(PARAM_IGFS_PREFER_LOCAL_WRITES, false);
-
-            // Get log directory.
-            String logDirCfg = parameter(cfg, PARAM_IGFS_LOG_DIR, uriAuthority, DFLT_IGFS_LOG_DIR);
-
-            File logDirFile = U.resolveIgnitePath(logDirCfg);
-
-            String logDir = logDirFile != null ? logDirFile.getAbsolutePath() : null;
-
-            rmtClient = new HadoopIgfsWrapper(uriAuthority, logDir, cfg, LOG, user);
-
-            // Handshake.
-            IgfsHandshakeResponse handshake = rmtClient.handshake(logDir);
-
-            grpBlockSize = handshake.blockSize();
-
-            IgfsPaths paths = handshake.secondaryPaths();
-
-            Boolean logEnabled = parameter(cfg, PARAM_IGFS_LOG_ENABLED, uriAuthority, false);
-
-            if (handshake.sampling() != null ? handshake.sampling() : logEnabled) {
-                // Initiate client logger.
-                if (logDir == null)
-                    throw new IOException("Failed to resolve log directory: " + logDirCfg);
-
-                Integer batchSize = parameter(cfg, PARAM_IGFS_LOG_BATCH_SIZE, uriAuthority, DFLT_IGFS_LOG_BATCH_SIZE);
-
-                clientLog = IgfsLogger.logger(uriAuthority, handshake.igfsName(), logDir, batchSize);
-            }
-            else
-                clientLog = IgfsLogger.disabledLogger();
-
-            try {
-                modeRslvr = new IgfsModeResolver(paths.defaultMode(), paths.pathModes());
-            }
-            catch (IgniteCheckedException ice) {
-                throw new IOException(ice);
-            }
-
-            boolean initSecondary = paths.defaultMode() == PROXY;
-
-            if (!initSecondary && paths.pathModes() != null) {
-                for (T2<IgfsPath, IgfsMode> pathMode : paths.pathModes()) {
-                    IgfsMode mode = pathMode.getValue();
-
-                    if (mode == PROXY) {
-                        initSecondary = true;
-
-                        break;
-                    }
-                }
-            }
-
-            if (initSecondary) {
-                try {
-                    HadoopFileSystemFactory factory0 =
-                        (HadoopFileSystemFactory) paths.getPayload(getClass().getClassLoader());
-
-                    factory = HadoopDelegateUtils.fileSystemFactoryDelegate(factory0);
-                }
-                catch (IgniteCheckedException e) {
-                    throw new IOException("Failed to get secondary file system factory.", e);
-                }
-
-                if (factory == null)
-                    throw new IOException("Failed to get secondary file system factory (did you set " +
-                        IgniteHadoopIgfsSecondaryFileSystem.class.getName() + " as \"secondaryFIleSystem\" in " +
-                        FileSystemConfiguration.class.getName() + "?)");
-
-                assert factory != null;
-
-                factory.start();
-
-                try {
-                    FileSystem secFs = (FileSystem)factory.get(user);
-
-                    secondaryUri = secFs.getUri();
-
-                    A.ensure(secondaryUri != null, "Secondary file system uri should not be null.");
-                }
-                catch (IOException e) {
-                    throw new IOException("Failed to connect to the secondary file system: " + secondaryUri, e);
-                }
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void close() throws IOException {
-        if (closeGuard.compareAndSet(false, true)) {
-            if (rmtClient == null)
-                return;
-
-            rmtClient.close(false);
-
-            if (clientLog.isLogEnabled())
-                clientLog.close();
-
-            if (factory != null)
-                factory.stop();
-
-            // Reset initialized resources.
-            rmtClient = null;
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public URI getUri() {
-        return uri;
-    }
-
-    /** {@inheritDoc} */
-    @Override public int getUriDefaultPort() {
-        return -1;
-    }
-
-    /** {@inheritDoc} */
-    @Override public FsServerDefaults getServerDefaults() throws IOException {
-        return new FsServerDefaults(grpBlockSize, (int)grpBlockSize, (int)grpBlockSize, dfltReplication, 64 * 1024,
-            false, 0, DataChecksum.Type.NULL);
-    }
-
-    /** {@inheritDoc} */
-    @Override public boolean setReplication(Path f, short replication) throws IOException {
-        return mode(f) == PROXY && secondaryFileSystem().setReplication(f, replication);
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setTimes(Path f, long mtime, long atime) throws IOException {
-        if (mode(f) == PROXY)
-            secondaryFileSystem().setTimes(f, mtime, atime);
-        else {
-            if (mtime == -1 && atime == -1)
-                return;
-
-            rmtClient.setTimes(convert(f), atime, mtime);
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public FsStatus getFsStatus() throws IOException {
-        IgfsStatus status = rmtClient.fsStatus();
-
-        return new FsStatus(status.spaceTotal(), status.spaceUsed(), status.spaceTotal() - status.spaceUsed());
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setPermission(Path p, FsPermission perm) throws IOException {
-        enterBusy();
-
-        try {
-            A.notNull(p, "p");
-
-            if (mode(p) == PROXY)
-                secondaryFileSystem().setPermission(toSecondary(p), perm);
-            else {
-                if (rmtClient.update(convert(p), permission(perm)) == null)
-                    throw new IOException("Failed to set file permission (file not found?)" +
-                        " [path=" + p + ", perm=" + perm + ']');
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setOwner(Path p, String usr, String grp) throws IOException {
-        A.notNull(p, "p");
-        A.notNull(usr, "username");
-        A.notNull(grp, "grpName");
-
-        enterBusy();
-
-        try {
-            if (mode(p) == PROXY)
-                secondaryFileSystem().setOwner(toSecondary(p), usr, grp);
-            else if (rmtClient.update(convert(p), F.asMap(IgfsUtils.PROP_USER_NAME, usr,
-                IgfsUtils.PROP_GROUP_NAME, grp)) == null) {
-                throw new IOException("Failed to set file permission (file not found?)" +
-                    " [path=" + p + ", username=" + usr + ", grpName=" + grp + ']');
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public FSDataInputStream open(Path f, int bufSize) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = modeRslvr.resolveMode(path);
-
-            if (mode == PROXY) {
-                FSDataInputStream is = secondaryFileSystem().open(toSecondary(f), bufSize);
-
-                if (clientLog.isLogEnabled()) {
-                    // At this point we do not know file size, so we perform additional request to remote FS to get it.
-                    FileStatus status = secondaryFileSystem().getFileStatus(toSecondary(f));
-
-                    long size = status != null ? status.getLen() : -1;
-
-                    long logId = IgfsLogger.nextId();
-
-                    clientLog.logOpen(logId, path, PROXY, bufSize, size);
-
-                    return new FSDataInputStream(new HadoopIgfsProxyInputStream(is, clientLog, logId));
-                }
-                else
-                    return is;
-            }
-            else {
-                HadoopIgfsStreamDelegate stream = seqReadsBeforePrefetchOverride ?
-                    rmtClient.open(path, seqReadsBeforePrefetch) : rmtClient.open(path);
-
-                long logId = -1;
-
-                if (clientLog.isLogEnabled()) {
-                    logId = IgfsLogger.nextId();
-
-                    clientLog.logOpen(logId, path, mode, bufSize, stream.length());
-                }
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Opening input stream [thread=" + Thread.currentThread().getName() + ", path=" + path +
-                        ", bufSize=" + bufSize + ']');
-
-                HadoopIgfsInputStream igfsIn = new HadoopIgfsInputStream(stream, stream.length(),
-                    bufSize, LOG, clientLog, logId);
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Opened input stream [path=" + path + ", delegate=" + stream + ']');
-
-                return new FSDataInputStream(igfsIn);
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @SuppressWarnings("deprecation")
-    @Override public FSDataOutputStream createInternal(
-        Path f,
-        EnumSet<CreateFlag> flag,
-        FsPermission perm,
-        int bufSize,
-        short replication,
-        long blockSize,
-        Progressable progress,
-        Options.ChecksumOpt checksumOpt,
-        boolean createParent
-    ) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        boolean overwrite = flag.contains(CreateFlag.OVERWRITE);
-        boolean append = flag.contains(CreateFlag.APPEND);
-        boolean create = flag.contains(CreateFlag.CREATE);
-
-        OutputStream out = null;
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = modeRslvr.resolveMode(path);
-
-            if (LOG.isDebugEnabled())
-                LOG.debug("Opening output stream in create [thread=" + Thread.currentThread().getName() + "path=" +
-                    path + ", overwrite=" + overwrite + ", bufSize=" + bufSize + ']');
-
-            if (mode == PROXY) {
-                FSDataOutputStream os = secondaryFileSystem().create(toSecondary(f), perm, flag, bufSize,
-                    replication, blockSize, progress);
-
-                if (clientLog.isLogEnabled()) {
-                    long logId = IgfsLogger.nextId();
-
-                    if (append)
-                        clientLog.logAppend(logId, path, PROXY, bufSize); // Don't have stream ID.
-                    else
-                        clientLog.logCreate(logId, path, PROXY, overwrite, bufSize, replication, blockSize);
-
-                    return new FSDataOutputStream(new HadoopIgfsProxyOutputStream(os, clientLog, logId));
-                }
-                else
-                    return os;
-            }
-            else {
-                Map<String, String> permMap = F.asMap(IgfsUtils.PROP_PERMISSION, toString(perm),
-                    IgfsUtils.PROP_PREFER_LOCAL_WRITES, Boolean.toString(preferLocFileWrites));
-
-                // Create stream and close it in the 'finally' section if any sequential operation failed.
-                HadoopIgfsStreamDelegate stream;
-
-                long logId = -1;
-
-                if (append) {
-                    stream = rmtClient.append(path, create, permMap);
-
-                    if (clientLog.isLogEnabled()) {
-                        logId = IgfsLogger.nextId();
-
-                        clientLog.logAppend(logId, path, mode, bufSize);
-                    }
-
-                    if (LOG.isDebugEnabled())
-                        LOG.debug("Opened output stream in append [path=" + path + ", delegate=" + stream + ']');
-                }
-                else {
-                    stream = rmtClient.create(path, overwrite, colocateFileWrites, replication, blockSize,
-                        permMap);
-
-                    if (clientLog.isLogEnabled()) {
-                        logId = IgfsLogger.nextId();
-
-                        clientLog.logCreate(logId, path, mode, overwrite, bufSize, replication, blockSize);
-                    }
-
-                    if (LOG.isDebugEnabled())
-                        LOG.debug("Opened output stream in create [path=" + path + ", delegate=" + stream + ']');
-                }
-
-                assert stream != null;
-
-                HadoopIgfsOutputStream igfsOut = new HadoopIgfsOutputStream(stream, LOG,
-                    clientLog, logId);
-
-                bufSize = Math.max(64 * 1024, bufSize);
-
-                out = new BufferedOutputStream(igfsOut, bufSize);
-
-                FSDataOutputStream res = new FSDataOutputStream(out, null, 0);
-
-                // Mark stream created successfully.
-                out = null;
-
-                return res;
-            }
-        }
-        finally {
-            // Close if failed during stream creation.
-            if (out != null)
-                U.closeQuiet(out);
-
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public boolean supportsSymlinks() {
-        return false;
-    }
-
-    /** {@inheritDoc} */
-    @Override public void renameInternal(Path src, Path dst) throws IOException {
-        A.notNull(src, "src");
-        A.notNull(dst, "dst");
-
-        enterBusy();
-
-        try {
-            IgfsPath srcPath = convert(src);
-            IgfsPath dstPath = convert(dst);
-
-            IgfsMode srcMode = modeRslvr.resolveMode(srcPath);
-
-            if (clientLog.isLogEnabled())
-                clientLog.logRename(srcPath, srcMode, dstPath);
-
-            if (srcMode == PROXY)
-                secondaryFileSystem().rename(toSecondary(src), toSecondary(dst));
-            else
-                rmtClient.rename(srcPath, dstPath);
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public boolean delete(Path f, boolean recursive) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-
-            IgfsMode mode = modeRslvr.resolveMode(path);
-
-            if (mode == PROXY) {
-                if (clientLog.isLogEnabled())
-                    clientLog.logDelete(path, PROXY, recursive);
-
-                return secondaryFileSystem().delete(toSecondary(f), recursive);
-            }
-
-            boolean res = rmtClient.delete(path, recursive);
-
-            if (clientLog.isLogEnabled())
-                clientLog.logDelete(path, mode, recursive);
-
-            return res;
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void setVerifyChecksum(boolean verifyChecksum) throws IOException {
-        // Checksum has effect for secondary FS only.
-        if (factory != null)
-            secondaryFileSystem().setVerifyChecksum(verifyChecksum);
-    }
-
-    /** {@inheritDoc} */
-    @Override public FileChecksum getFileChecksum(Path f) throws IOException {
-        if (mode(f) == PROXY)
-            return secondaryFileSystem().getFileChecksum(f);
-
-        return null;
-    }
-
-    /** {@inheritDoc} */
-    @Override public FileStatus[] listStatus(Path f) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = modeRslvr.resolveMode(path);
-
-            if (mode == PROXY) {
-                FileStatus[] arr = secondaryFileSystem().listStatus(toSecondary(f));
-
-                if (arr == null)
-                    throw new FileNotFoundException("File " + f + " does not exist.");
-
-                for (int i = 0; i < arr.length; i++)
-                    arr[i] = toPrimary(arr[i]);
-
-                if (clientLog.isLogEnabled()) {
-                    String[] fileArr = new String[arr.length];
-
-                    for (int i = 0; i < arr.length; i++)
-                        fileArr[i] = arr[i].getPath().toString();
-
-                    clientLog.logListDirectory(path, PROXY, fileArr);
-                }
-
-                return arr;
-            }
-            else {
-                Collection<IgfsFile> list = rmtClient.listFiles(path);
-
-                if (list == null)
-                    throw new FileNotFoundException("File " + f + " does not exist.");
-
-                List<IgfsFile> files = new ArrayList<>(list);
-
-                FileStatus[] arr = new FileStatus[files.size()];
-
-                for (int i = 0; i < arr.length; i++)
-                    arr[i] = convert(files.get(i));
-
-                if (clientLog.isLogEnabled()) {
-                    String[] fileArr = new String[arr.length];
-
-                    for (int i = 0; i < arr.length; i++)
-                        fileArr[i] = arr[i].getPath().toString();
-
-                    clientLog.logListDirectory(path, mode, fileArr);
-                }
-
-                return arr;
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public void mkdir(Path f, FsPermission perm, boolean createParent) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            IgfsPath path = convert(f);
-            IgfsMode mode = modeRslvr.resolveMode(path);
-
-            if (mode == PROXY) {
-                if (clientLog.isLogEnabled())
-                    clientLog.logMakeDirectory(path, PROXY);
-
-                secondaryFileSystem().mkdirs(toSecondary(f), perm);
-            }
-            else {
-                rmtClient.mkdirs(path, permission(perm));
-
-                if (clientLog.isLogEnabled())
-                    clientLog.logMakeDirectory(path, mode);
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public FileStatus getFileStatus(Path f) throws IOException {
-        A.notNull(f, "f");
-
-        enterBusy();
-
-        try {
-            if (mode(f) == PROXY)
-                return toPrimary(secondaryFileSystem().getFileStatus(toSecondary(f)));
-            else {
-                IgfsFile info = rmtClient.info(convert(f));
-
-                if (info == null)
-                    throw new FileNotFoundException("File not found: " + f);
-
-                return convert(info);
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public BlockLocation[] getFileBlockLocations(Path path, long start, long len) throws IOException {
-        A.notNull(path, "path");
-
-        IgfsPath igfsPath = convert(path);
-
-        enterBusy();
-
-        try {
-            if (modeRslvr.resolveMode(igfsPath) == PROXY)
-                return secondaryFileSystem().getFileBlockLocations(path, start, len);
-            else {
-                long now = System.currentTimeMillis();
-
-                List<IgfsBlockLocation> affinity = new ArrayList<>(
-                    rmtClient.affinity(igfsPath, start, len));
-
-                BlockLocation[] arr = new BlockLocation[affinity.size()];
-
-                for (int i = 0; i < arr.length; i++)
-                    arr[i] = convert(affinity.get(i));
-
-                if (LOG.isDebugEnabled())
-                    LOG.debug("Fetched file locations [path=" + path + ", fetchTime=" +
-                        (System.currentTimeMillis() - now) + ", locations=" + Arrays.asList(arr) + ']');
-
-                return arr;
-            }
-        }
-        finally {
-            leaveBusy();
-        }
-    }
-
-    /**
-     * Resolve path mode.
-     *
-     * @param path HDFS path.
-     * @return Path mode.
-     */
-    public IgfsMode mode(Path path) {
-        return modeRslvr.resolveMode(convert(path));
-    }
-
-    /**
-     * Convert the given path to path acceptable by the primary file system.
-     *
-     * @param path Path.
-     * @return Primary file system path.
-     */
-    private Path toPrimary(Path path) {
-        return convertPath(path, getUri());
-    }
-
-    /**
-     * Convert the given path to path acceptable by the secondary file system.
-     *
-     * @param path Path.
-     * @return Secondary file system path.
-     */
-    private Path toSecondary(Path path) {
-        assert factory != null;
-        assert secondaryUri != null;
-
-        return convertPath(path, secondaryUri);
-    }
-
-    /**
-     * Convert path using the given new URI.
-     *
-     * @param path Old path.
-     * @param newUri New URI.
-     * @return New path.
-     */
-    private Path convertPath(Path path, URI newUri) {
-        assert newUri != null;
-
-        if (path != null) {
-            URI pathUri = path.toUri();
-
-            try {
-                return new Path(new URI(pathUri.getScheme() != null ? newUri.getScheme() : null,
-                    pathUri.getAuthority() != null ? newUri.getAuthority() : null, pathUri.getPath(), null, null));
-            }
-            catch (URISyntaxException e) {
-                throw new IgniteException("Failed to construct secondary file system path from the primary file " +
-                    "system path: " + path, e);
-            }
-        }
-        else
-            return null;
-    }
-
-    /**
-     * Convert a file status obtained from the secondary file system to a status of the primary file system.
-     *
-     * @param status Secondary file system status.
-     * @return Primary file system status.
-     */
-    private FileStatus toPrimary(FileStatus status) {
-        return status != null ? new FileStatus(status.getLen(), status.isDirectory(), status.getReplication(),
-            status.getBlockSize(), status.getModificationTime(), status.getAccessTime(), status.getPermission(),
-            status.getOwner(), status.getGroup(), toPrimary(status.getPath())) : null;
-    }
-
-    /**
-     * Convert IGFS path into Hadoop path.
-     *
-     * @param path IGFS path.
-     * @return Hadoop path.
-     */
-    private Path convert(IgfsPath path) {
-        return new Path(IGFS_SCHEME, uriAuthority, path.toString());
-    }
-
-    /**
-     * Convert Hadoop path into IGFS path.
-     *
-     * @param path Hadoop path.
-     * @return IGFS path.
-     */
-    @Nullable private IgfsPath convert(Path path) {
-        if (path == null)
-            return null;
-
-        return path.isAbsolute() ? new IgfsPath(path.toUri().getPath()) :
-            new IgfsPath(workingDir, path.toUri().getPath());
-    }
-
-    /**
-     * Convert IGFS affinity block location into Hadoop affinity block location.
-     *
-     * @param block IGFS affinity block location.
-     * @return Hadoop affinity block location.
-     */
-    private BlockLocation convert(IgfsBlockLocation block) {
-        Collection<String> names = block.names();
-        Collection<String> hosts = block.hosts();
-
-        return new BlockLocation(
-            names.toArray(new String[names.size()]) /* hostname:portNumber of data nodes */,
-            hosts.toArray(new String[hosts.size()]) /* hostnames of data nodes */,
-            block.start(), block.length()
-        ) {
-            @Override public String toString() {
-                try {
-                    return "BlockLocation [offset=" + getOffset() + ", length=" + getLength() +
-                        ", hosts=" + Arrays.asList(getHosts()) + ", names=" + Arrays.asList(getNames()) + ']';
-                }
-                catch (IOException e) {
-                    throw new RuntimeException(e);
-                }
-            }
-        };
-    }
-
-    /**
-     * Convert IGFS file information into Hadoop file status.
-     *
-     * @param file IGFS file information.
-     * @return Hadoop file status.
-     */
-    private FileStatus convert(IgfsFile file) {
-        return new FileStatus(
-            file.length(),
-            file.isDirectory(),
-            dfltReplication,
-            file.groupBlockSize(),
-            file.modificationTime(),
-            file.accessTime(),
-            permission(file),
-            file.property(IgfsUtils.PROP_USER_NAME, user),
-            file.property(IgfsUtils.PROP_GROUP_NAME, "users"),
-            convert(file.path())) {
-            @Override public String toString() {
-                return "FileStatus [path=" + getPath() + ", isDir=" + isDirectory() + ", len=" + getLen() + "]";
-            }
-        };
-    }
-
-    /**
-     * Convert Hadoop permission into IGFS file attribute.
-     *
-     * @param perm Hadoop permission.
-     * @return IGFS attributes.
-     */
-    private Map<String, String> permission(FsPermission perm) {
-        if (perm == null)
-            perm = FsPermission.getDefault();
-
-        return F.asMap(IgfsUtils.PROP_PERMISSION, toString(perm));
-    }
-
-    /**
-     * @param perm Permission.
-     * @return String.
-     */
-    private static String toString(FsPermission perm) {
-        return String.format("%04o", perm.toShort());
-    }
-
-    /**
-     * Convert IGFS file attributes into Hadoop permission.
-     *
-     * @param file File info.
-     * @return Hadoop permission.
-     */
-    private FsPermission permission(IgfsFile file) {
-        String perm = file.property(IgfsUtils.PROP_PERMISSION, null);
-
-        if (perm == null)
-            return FsPermission.getDefault();
-
-        try {
-            return new FsPermission((short)Integer.parseInt(perm, 8));
-        }
-        catch (NumberFormatException ignore) {
-            return FsPermission.getDefault();
-        }
-    }
-
-    /** {@inheritDoc} */
-    @Override public String toString() {
-        return S.toString(IgniteHadoopFileSystem.class, this);
-    }
-
-    /**
-     * Returns the user name this File System is created on behalf of.
-     * @return the user name
-     */
-    public String user() {
-        return user;
-    }
-
-    /**
-     * Gets cached or creates a {@link FileSystem}.
-     *
-     * @return The secondary file system.
-     */
-    private FileSystem secondaryFileSystem() throws IOException{
-        assert factory != null;
-
-        return (FileSystem)factory.get(user);
-    }
-}
\ No newline at end of file


Mime
View raw message