fumingxia 发表于 2017-12-18 08:36:15

Hadoop源码分析之产生InputSplit文件过程

public interface Writable {/**  * Serialize the fields of this object to <code>out</code>.
  *
  *
@param out <code>DataOuput</code> to serialize this object into.  *
@throws IOException*/  void write(DataOutput out) throws IOException;
  /**
  * Deserialize the fields of this object from <code>in</code>.
  *
  * <p>For efficiency, implementations should attempt to re-use storage in the
  * existing object where possible.</p>
  *
  * @param in <code>DataInput</code> to deseriablize this object from.
  * @throws IOException
  */
  void readFields(DataInput in) throws IOException;
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