Configuration.java 文件源码

public void write(DataOutput out) throws IOException {
  Properties props = getProps();
  WritableUtils.writeVInt(out, props.size());
  for(Map.Entry<Object, Object> item: props.entrySet()) {
    org.apache.hadoop.io.Text.writeString(out, (String) item.getKey());
    org.apache.hadoop.io.Text.writeString(out, (String) item.getValue());
  }
}