Package org.apache.hadoop.hdfs.protocol

Examples of org.apache.hadoop.hdfs.protocol.ReadMetadataHeader

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   * Reads the metadata and sends the data in one 'DATA_CHUNK'.
   * @param in
   */
  void readMetadata(DataInputStream in, VersionAndOpcode versionAndOpcode)
      throws IOException {
    ReadMetadataHeader readMetadataHeader =
        new ReadMetadataHeader(versionAndOpcode);
    readMetadataHeader.readFields(in);
    final int namespaceId = readMetadataHeader.getNamespaceId();
    Block block = new Block(readMetadataHeader.getBlockId(), 0,
        readMetadataHeader.getGenStamp());
    MetaDataInputStream checksumIn = null;
    DataOutputStream out = null;
    updateCurrentThreadName("reading metadata for block " + block);
    try {
      checksumIn = datanode.data.getMetaDataInputStream(namespaceId, block);
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   * Reads the metadata and sends the data in one 'DATA_CHUNK'.
   * @param in
   */
  void readMetadata(DataInputStream in, VersionAndOpcode versionAndOpcode)
      throws IOException {
    ReadMetadataHeader readMetadataHeader =
        new ReadMetadataHeader(versionAndOpcode);
    readMetadataHeader.readFields(in);
    final int namespaceId = readMetadataHeader.getNamespaceId();
    Block block = new Block(readMetadataHeader.getBlockId(), 0,
        readMetadataHeader.getGenStamp());
   
    ReplicaToRead rtr;
    if ((rtr = datanode.data.getReplicaToRead(namespaceId, block)) == null
        || rtr.isInlineChecksum()) {
      throw new IOException(
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Related Classes of org.apache.hadoop.hdfs.protocol.ReadMetadataHeader

  • org.apache.hadoop.hdfs.server.datanode.DataXceiver
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