How to use

initCause

method

in

org.apache.hadoop.hbase.exceptions.ConnectionClosingException

} else if (exception instanceof ConnectionClosingException) {
 return (ConnectionClosingException) new ConnectionClosingException(
   "Call to " + addr + " failed on local exception: " + exception).initCause(exception);
} else if (exception instanceof ServerTooBusyException) {

} else if (exception instanceof ConnectionClosingException) {
 return (ConnectionClosingException) new ConnectionClosingException(
   "Call to " + addr + " failed on local exception: " + exception).initCause(exception);
} else if (exception instanceof ServerTooBusyException) {

/**
 * Takes an Exception and the address we were trying to connect to and return an IOException with
 * the input exception as the cause. The new exception provides the stack trace of the place where
 * the exception is thrown and some extra diagnostics information. If the exception is
 * ConnectException or SocketTimeoutException, return a new one of the same type; Otherwise return
 * an IOException.
 * @param addr target address
 * @param exception the relevant exception
 * @return an exception to throw
 */
protected IOException wrapException(InetSocketAddress addr, Exception exception) {
 if (exception instanceof ConnectException) {
  // connection refused; include the host:port in the error
  return (ConnectException) new ConnectException("Call to " + addr
    + " failed on connection exception: " + exception).initCause(exception);
 } else if (exception instanceof SocketTimeoutException) {
  return (SocketTimeoutException) new SocketTimeoutException("Call to " + addr
    + " failed because " + exception).initCause(exception);
 } else if (exception instanceof ConnectionClosingException) {
  return (ConnectionClosingException) new ConnectionClosingException("Call to " + addr
    + " failed on local exception: " + exception).initCause(exception);
 } else {
  return (IOException) new IOException("Call to " + addr + " failed on local exception: "
    + exception).initCause(exception);
 }
}

} else if (exception instanceof ConnectionClosingException) {
 return (ConnectionClosingException) new ConnectionClosingException(
   "Call to " + addr + " failed on local exception: " + exception).initCause(exception);
} else if (exception instanceof ServerTooBusyException) {