NettyBufferPool (flink-runtime 1.1.2 API)

java.lang.Object
- org.apache.flink.runtime.io.network.netty.NettyBufferPool

All Implemented Interfaces:

io.netty.buffer.ByteBufAllocator
```
public class NettyBufferPool
extends Object
implements io.netty.buffer.ByteBufAllocator
```
Wrapper around Netty's PooledByteBufAllocator with strict control over the number of created arenas.

Field Summary
- Fields inherited from interface io.netty.buffer.ByteBufAllocator
  DEFAULT

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`io.netty.buffer.ByteBuf`	`buffer()`
`io.netty.buffer.ByteBuf`	`buffer(int initialCapacity)`
`io.netty.buffer.ByteBuf`	`buffer(int initialCapacity, int maxCapacity)`
`io.netty.buffer.CompositeByteBuf`	`compositeBuffer()`
`io.netty.buffer.CompositeByteBuf`	`compositeBuffer(int maxNumComponents)`
`io.netty.buffer.CompositeByteBuf`	`compositeDirectBuffer()`
`io.netty.buffer.CompositeByteBuf`	`compositeDirectBuffer(int maxNumComponents)`
`io.netty.buffer.CompositeByteBuf`	`compositeHeapBuffer()`
`io.netty.buffer.CompositeByteBuf`	`compositeHeapBuffer(int maxNumComponents)`
`io.netty.buffer.ByteBuf`	`directBuffer()`
`io.netty.buffer.ByteBuf`	`directBuffer(int initialCapacity)`
`io.netty.buffer.ByteBuf`	`directBuffer(int initialCapacity, int maxCapacity)`
`scala.Option<Long>`	`getNumberOfAllocatedBytes()` Returns the number of currently allocated bytes.
`io.netty.buffer.ByteBuf`	`heapBuffer()`
`io.netty.buffer.ByteBuf`	`heapBuffer(int initialCapacity)`
`io.netty.buffer.ByteBuf`	`heapBuffer(int initialCapacity, int maxCapacity)`
`io.netty.buffer.ByteBuf`	`ioBuffer()`
`io.netty.buffer.ByteBuf`	`ioBuffer(int initialCapacity)`
`io.netty.buffer.ByteBuf`	`ioBuffer(int initialCapacity, int maxCapacity)`
`boolean`	`isDirectBufferPooled()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getNumberOfAllocatedBytes
```
public scala.Option<Long> getNumberOfAllocatedBytes()
                                             throws NoSuchFieldException,
                                                    IllegalAccessException
```
    Returns the number of currently allocated bytes.
    The stats are gathered via Reflection and are mostly relevant for debugging purposes.
    
    Returns:
    
    Number of currently allocated bytes.
    
    Throws:
    
    NoSuchFieldException - Error getting the statistics (should not happen when the Netty version stays the same).
    
    IllegalAccessException - Error getting the statistics (should not happen when the Netty version stays the same).
  - buffer
```
public io.netty.buffer.ByteBuf buffer()
```
    Specified by:
    
    buffer in interface io.netty.buffer.ByteBufAllocator
  - buffer
```
public io.netty.buffer.ByteBuf buffer(int initialCapacity)
```
    Specified by:
    
    buffer in interface io.netty.buffer.ByteBufAllocator
  - buffer
```
public io.netty.buffer.ByteBuf buffer(int initialCapacity,
                                      int maxCapacity)
```
    Specified by:
    
    buffer in interface io.netty.buffer.ByteBufAllocator
  - ioBuffer
```
public io.netty.buffer.ByteBuf ioBuffer()
```
    Specified by:
    
    ioBuffer in interface io.netty.buffer.ByteBufAllocator
  - ioBuffer
```
public io.netty.buffer.ByteBuf ioBuffer(int initialCapacity)
```
    Specified by:
    
    ioBuffer in interface io.netty.buffer.ByteBufAllocator
  - ioBuffer
```
public io.netty.buffer.ByteBuf ioBuffer(int initialCapacity,
                                        int maxCapacity)
```
    Specified by:
    
    ioBuffer in interface io.netty.buffer.ByteBufAllocator
  - heapBuffer
```
public io.netty.buffer.ByteBuf heapBuffer()
```
    Specified by:
    
    heapBuffer in interface io.netty.buffer.ByteBufAllocator
  - heapBuffer
```
public io.netty.buffer.ByteBuf heapBuffer(int initialCapacity)
```
    Specified by:
    
    heapBuffer in interface io.netty.buffer.ByteBufAllocator
  - heapBuffer
```
public io.netty.buffer.ByteBuf heapBuffer(int initialCapacity,
                                          int maxCapacity)
```
    Specified by:
    
    heapBuffer in interface io.netty.buffer.ByteBufAllocator
  - directBuffer
```
public io.netty.buffer.ByteBuf directBuffer()
```
    Specified by:
    
    directBuffer in interface io.netty.buffer.ByteBufAllocator
  - directBuffer
```
public io.netty.buffer.ByteBuf directBuffer(int initialCapacity)
```
    Specified by:
    
    directBuffer in interface io.netty.buffer.ByteBufAllocator
  - directBuffer
```
public io.netty.buffer.ByteBuf directBuffer(int initialCapacity,
                                            int maxCapacity)
```
    Specified by:
    
    directBuffer in interface io.netty.buffer.ByteBufAllocator
  - compositeBuffer
```
public io.netty.buffer.CompositeByteBuf compositeBuffer()
```
    Specified by:
    
    compositeBuffer in interface io.netty.buffer.ByteBufAllocator
  - compositeBuffer
```
public io.netty.buffer.CompositeByteBuf compositeBuffer(int maxNumComponents)
```
    Specified by:
    
    compositeBuffer in interface io.netty.buffer.ByteBufAllocator
  - compositeHeapBuffer
```
public io.netty.buffer.CompositeByteBuf compositeHeapBuffer()
```
    Specified by:
    
    compositeHeapBuffer in interface io.netty.buffer.ByteBufAllocator
  - compositeHeapBuffer
```
public io.netty.buffer.CompositeByteBuf compositeHeapBuffer(int maxNumComponents)
```
    Specified by:
    
    compositeHeapBuffer in interface io.netty.buffer.ByteBufAllocator
  - compositeDirectBuffer
```
public io.netty.buffer.CompositeByteBuf compositeDirectBuffer()
```
    Specified by:
    
    compositeDirectBuffer in interface io.netty.buffer.ByteBufAllocator
  - compositeDirectBuffer
```
public io.netty.buffer.CompositeByteBuf compositeDirectBuffer(int maxNumComponents)
```
    Specified by:
    
    compositeDirectBuffer in interface io.netty.buffer.ByteBufAllocator
  - isDirectBufferPooled
```
public boolean isDirectBufferPooled()
```
    Specified by:
    
    isDirectBufferPooled in interface io.netty.buffer.ByteBufAllocator

Class NettyBufferPool

Field Summary

Fields inherited from interface io.netty.buffer.ByteBufAllocator

Method Summary

Methods inherited from class java.lang.Object

Method Detail

getNumberOfAllocatedBytes

buffer

buffer

buffer

ioBuffer

ioBuffer

ioBuffer

heapBuffer

heapBuffer

heapBuffer

directBuffer

directBuffer

directBuffer

compositeBuffer

compositeBuffer

compositeHeapBuffer

compositeHeapBuffer

compositeDirectBuffer

compositeDirectBuffer

isDirectBufferPooled