NettyConnectionReaderImpl (Flink : Runtime 2.1.0 API)

java.lang.Object
- org.apache.flink.runtime.io.network.partition.hybrid.tiered.netty.NettyConnectionReaderImpl

All Implemented Interfaces:

NettyConnectionReader
```
public class NettyConnectionReaderImpl
extends Object
implements NettyConnectionReader
```
The default implementation of NettyConnectionReader.

Constructor Summary

Constructors
Constructor Description

NettyConnectionReaderImpl(Supplier<InputChannel> inputChannelProvider)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`peekNextBufferSubpartitionId()`	Returns the index of the subpartition where the next buffer locates, or -1 if there is no buffer available and the subpartition to be consumed is not determined.
`Optional<Buffer>`	`readBuffer(int subpartitionId, int segmentId)`	Read a buffer from netty connection.

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

- Constructor Detail
  - NettyConnectionReaderImpl
```
public NettyConnectionReaderImpl(Supplier<InputChannel> inputChannelProvider)
```
- Method Detail
  - peekNextBufferSubpartitionId
```
public int peekNextBufferSubpartitionId()
                                 throws IOException
```
    Description copied from interface: NettyConnectionReader
    
    Returns the index of the subpartition where the next buffer locates, or -1 if there is no buffer available and the subpartition to be consumed is not determined.
    
    Specified by:
    
    peekNextBufferSubpartitionId in interface NettyConnectionReader
    
    Throws:
    
    IOException
  - readBuffer
```
public Optional<Buffer> readBuffer(int subpartitionId,
                                   int segmentId)
```
    Description copied from interface: NettyConnectionReader
    
    Read a buffer from netty connection.
    
    Specified by:
    
    readBuffer in interface NettyConnectionReader
    
    Parameters:
    
    subpartitionId - the subpartition where the buffer locates.
    
    segmentId - segment id indicates the id of segment.
    
    Returns:
    
    Optional.empty() will be returned if there is no buffer sent from netty connection otherwise a buffer will be returned.