EditLogBackupOutputStream.java 文件源码

EditLogBackupOutputStream(NamenodeRegistration bnReg, // backup node
                          JournalInfo journalInfo) // active name-node
throws IOException {
  super();
  this.bnRegistration = bnReg;
  this.journalInfo = journalInfo;
  InetSocketAddress bnAddress =
    NetUtils.createSocketAddr(bnRegistration.getAddress());
  try {
    this.backupNode = NameNodeProxies.createNonHAProxy(new HdfsConfiguration(),
        bnAddress, JournalProtocol.class, UserGroupInformation.getCurrentUser(),
        true).getProxy();
  } catch(IOException e) {
    Storage.LOG.error("Error connecting to: " + bnAddress, e);
    throw e;
  }
  this.doubleBuf = new EditsDoubleBuffer(DEFAULT_BUFFER_SIZE);
  this.out = new DataOutputBuffer(DEFAULT_BUFFER_SIZE);
}