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From "Henry Robinson (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8135) Add ByteBufferReadable interface to FSDataInputStream
Date Fri, 02 Mar 2012 22:09:58 GMT
Add ByteBufferReadable interface to FSDataInputStream

                 Key: HADOOP-8135
                 URL: https://issues.apache.org/jira/browse/HADOOP-8135
             Project: Hadoop Common
          Issue Type: New Feature
          Components: fs
            Reporter: Henry Robinson
            Assignee: Henry Robinson

To prepare for HDFS-2834, it's useful to add an interface to FSDataInputStream (and others
inside hdfs) that adds a read(ByteBuffer...) method as follows:

   * Reads up to buf.remaining() bytes into buf. Callers should use
   * buf.limit(..) to control the size of the desired read.
   * After the call, buf.position() should be unchanged, and therefore any data
   * can be immediately read from buf.
   * @param buf
   * @return - the number of bytes available to read from buf
   * @throws IOException
  public int read(ByteBuffer buf) throws IOException;

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