Package org.apache.hadoop.io

Interface ByteBufferPool

All Known Implementing Classes:
ElasticByteBufferPool
@Public @Stable public interface ByteBufferPool

  • Method Summary

    Modifier and Type
    Method
    Description
    ByteBuffer
    getBuffer(boolean direct, int length)
    Get a new direct ByteBuffer.
    void
    putBuffer(ByteBuffer buffer)
    Release a buffer back to the pool.
    default void
    release()
    Clear the buffer pool thus releasing all the buffers.

  • Method Details

    • getBuffer

      ByteBuffer getBuffer(boolean direct, int length)
      Get a new direct ByteBuffer. The pool can provide this from removing a buffer from its internal cache, or by allocating a new buffer.
      Parameters:
      direct - Whether the buffer should be direct.
      length - The minimum length the buffer will have.
      Returns:
      A new ByteBuffer. This ByteBuffer must be direct. Its capacity can be less than what was requested, but must be at least 1 byte.

    • putBuffer

      void putBuffer(ByteBuffer buffer)
      Release a buffer back to the pool. The pool may choose to put this buffer into its cache.
      Parameters:
      buffer - a direct bytebuffer

    • release

      default void release()
      Clear the buffer pool thus releasing all the buffers.