How to use

close

method

in

org.apache.hadoop.hdfs.server.namenode.EditsDoubleBuffer

@Override
public void close() throws IOException {
 if (buf != null) {
  buf.close();
  buf = null;
 }
}

@Override // EditLogOutputStream
public void close() throws IOException {
 // close should have been called after all pending transactions 
 // have been flushed & synced.
 int size = doubleBuf.countBufferedBytes();
 if (size != 0) {
  throw new IOException("BackupEditStream has " + size +
            " records still to be flushed and cannot be closed.");
 } 
 RPC.stopProxy(backupNode); // stop the RPC threads
 doubleBuf.close();
 doubleBuf = null;
}

doubleBuf.close();
doubleBuf = null;

@Override
public void close() throws IOException {
 if (buf != null) {
  buf.close();
  buf = null;
 }
}

@Override
public void close() throws IOException {
 if (buf != null) {
  buf.close();
  buf = null;
 }
}

@Override // EditLogOutputStream
public void close() throws IOException {
 // close should have been called after all pending transactions 
 // have been flushed & synced.
 int size = doubleBuf.countBufferedBytes();
 if (size != 0) {
  throw new IOException("BackupEditStream has " + size +
            " records still to be flushed and cannot be closed.");
 } 
 RPC.stopProxy(backupNode); // stop the RPC threads
 doubleBuf.close();
 doubleBuf = null;
}

@Override // EditLogOutputStream
public void close() throws IOException {
 // close should have been called after all pending transactions 
 // have been flushed & synced.
 int size = doubleBuf.countBufferedBytes();
 if (size != 0) {
  throw new IOException("BackupEditStream has " + size +
            " records still to be flushed and cannot be closed.");
 } 
 RPC.stopProxy(backupNode); // stop the RPC threads
 doubleBuf.close();
 doubleBuf = null;
}

@Override
public void close() throws IOException {
 if (fp == null) {
  throw new IOException("Trying to use aborted output stream");
 }
 try {
  // close should have been called after all pending transactions
  // have been flushed & synced.
  // if already closed, just skip
  if (doubleBuf != null) {
   doubleBuf.close();
  }
  
  // remove the last INVALID marker from transaction log.
  if (fc != null && fc.isOpen()) {
   fc.truncate(fc.position());
   fc.close();
  }
  if (fp != null) {
   fp.close();
  }
 } finally {
  IOUtils.cleanup(FSNamesystem.LOG, fc, fp);
  doubleBuf = null;
  fc = null;
  fp = null;
 }
}

doubleBuf.close();
doubleBuf = null;

doubleBuf.close();
doubleBuf = null;

 @Test
 public void shouldFailToCloseWhenUnflushed() throws IOException {
  EditsDoubleBuffer buf = new EditsDoubleBuffer(1024);
  buf.writeRaw(new byte[1], 0, 1);
  try {
   buf.close();
   fail("Did not fail to close with unflushed data");
  } catch (IOException ioe) {
   if (!ioe.toString().contains("still to be flushed")) {
    throw ioe;
   }
  }
 }
}