Package org.apache.accumulo.core.volume

Examples of org.apache.accumulo.core.volume.Volume

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    }
  }
 
  public static synchronized int getAccumuloPersistentVersion(VolumeManager fs) {
    // It doesn't matter which Volume is used as they should all have the data version stored
    Volume v = fs.getVolumes().iterator().next();
    Path path = ServerConstants.getDataVersionLocation(v);
    return getAccumuloPersistentVersion(v.getFileSystem(), path);
  }
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    return getAccumuloPersistentVersion(v.getFileSystem(), path);
  }

  public static synchronized Path getAccumuloInstanceIdPath(VolumeManager fs) {
    // It doesn't matter which Volume is used as they should all have the instance ID stored
    Volume v = fs.getVolumes().iterator().next();
    return ServerConstants.getInstanceIdLocation(v);
  }
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    }
  }

  public static org.apache.accumulo.server.fs.VolumeManager getLocal(String localBasePath) throws IOException {
    AccumuloConfiguration accConf = DefaultConfiguration.getDefaultConfiguration();
    Volume defaultLocalVolume = VolumeConfiguration.create(FileSystem.getLocal(CachedConfiguration.getInstance()), localBasePath);

    // The default volume gets placed in the map, but local filesystem is only used for testing purposes
    return new VolumeManagerImpl(Collections.singletonMap(DEFAULT, defaultLocalVolume), defaultLocalVolume, accConf);
  }
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  @Override
  public FSDataOutputStream create(Path path) throws IOException {
    checkNotNull(path);

    Volume v = getVolumeByPath(path);

    return v.getFileSystem().create(path);
  }
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  @Override
  public FSDataOutputStream create(Path path, boolean overwrite) throws IOException {
    checkNotNull(path);

    Volume v = getVolumeByPath(path);

    return v.getFileSystem().create(path, overwrite);
  }
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  @Override
  public FSDataOutputStream create(Path path, boolean overwrite, int bufferSize, short replication, long blockSize) throws IOException {
    checkNotNull(path);

    Volume v = getVolumeByPath(path);
    FileSystem fs = v.getFileSystem();
    blockSize = correctBlockSize(fs.getConf(), blockSize);
    bufferSize = correctBufferSize(fs.getConf(), bufferSize);
    return fs.create(path, overwrite, bufferSize, replication, blockSize);
  }
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  @Override
  public boolean createNewFile(Path path) throws IOException {
    checkNotNull(path);

    Volume v = getVolumeByPath(path);
    return v.getFileSystem().createNewFile(path);
  }
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    return v.getFileSystem().createNewFile(path);
  }

  @Override
  public FSDataOutputStream createSyncable(Path logPath, int bufferSize, short replication, long blockSize) throws IOException {
    Volume v = getVolumeByPath(logPath);
    FileSystem fs = v.getFileSystem();
    blockSize = correctBlockSize(fs.getConf(), blockSize);
    bufferSize = correctBufferSize(fs.getConf(), bufferSize);
    try {
      // This...
      // EnumSet<CreateFlag> set = EnumSet.of(CreateFlag.SYNC_BLOCK, CreateFlag.CREATE);
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    return getVolumeByPath(path).getFileSystem().open(path);
  }

  @Override
  public boolean rename(Path path, Path newPath) throws IOException {
    Volume srcVolume = getVolumeByPath(path);
    Volume destVolume = getVolumeByPath(newPath);
    FileSystem source = srcVolume.getFileSystem();
    FileSystem dest = destVolume.getFileSystem();
    if (source != dest) {
      throw new NotImplementedException("Cannot rename files across volumes: " + path + " -> " + newPath);
    }
    return source.rename(path, newPath);
  }
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    return trash.moveToTrash(path);
  }

  @Override
  public short getDefaultReplication(Path path) {
    Volume v = getVolumeByPath(path);
    FileSystem fs = v.getFileSystem();
    try {
      // try calling hadoop 2 method
      Method method = fs.getClass().getMethod("getDefaultReplication", Path.class);
      return ((Short) method.invoke(fs, path)).shortValue();
    } catch (NoSuchMethodException e) {
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Related Classes of org.apache.accumulo.core.volume.Volume

  • org.apache.accumulo.server.Accumulo
  • org.apache.accumulo.server.fs.VolumeManagerImpl
  • org.apache.accumulo.server.util.FileUtil
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