NettyConnectionReader (Flink : Runtime 1.18.1-cp1 API)

All Known Implementing Classes:

NettyConnectionReaderImpl
```
public interface NettyConnectionReader
```
NettyConnectionReader is used by TierConsumerAgent to read buffer from netty.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  Optional<Buffer> readBuffer(int segmentId)
  Read a buffer from netty connection.

- Method Detail
  - readBuffer
```
Optional<Buffer> readBuffer(int segmentId)
```
    Read a buffer from netty connection.
    
    Parameters:
    
    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.