PartitionRequestListener (Flink : Runtime 2.1.0 API)

All Known Implementing Classes:

NettyPartitionRequestListener
```
public interface PartitionRequestListener
```
When the netty server receives a downstream task's partition request event and finds its upstream task doesn't register its partition yet, the netty server will construct a PartitionRequestListener and notify the listener when the task deploys itself and registers its partition to ResultPartitionManager.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`getCreateTimestamp()`	The creation timestamp of this notifier, it's used to check whether the notifier is timeout.
`InputChannelID`	`getReceiverId()`	Get the input channel id of the notifier.
`ResultPartitionID`	`getResultPartitionId()`	Get the result partition id of the notifier.
`NetworkSequenceViewReader`	`getViewReader()`	Get the view reader of the notifier.
`void`	`notifyPartitionCreated(ResultPartition partition)`	Notify the partition request listener when the given partition is registered.
`void`	`notifyPartitionCreatedTimeout()`	When the partition request listener is timeout, it will be notified to send `PartitionNotFoundException`.
`void`	`releaseListener()`	Release this listener.

- Method Detail
  - getCreateTimestamp
```
long getCreateTimestamp()
```
    The creation timestamp of this notifier, it's used to check whether the notifier is timeout.
    
    Returns:
    
    the creation timestamp
  - getResultPartitionId
```
ResultPartitionID getResultPartitionId()
```
    Get the result partition id of the notifier.
    
    Returns:
    
    the result partition id
  - getViewReader
```
NetworkSequenceViewReader getViewReader()
```
    Get the view reader of the notifier.
    
    Returns:
    
    the view reader
  - getReceiverId
```
InputChannelID getReceiverId()
```
    Get the input channel id of the notifier.
    
    Returns:
    
    the input channel id
  - notifyPartitionCreated
```
void notifyPartitionCreated(ResultPartition partition)
                     throws IOException
```
    Notify the partition request listener when the given partition is registered.
    
    Parameters:
    
    partition - The registered partition.
    
    Throws:
    
    IOException
  - notifyPartitionCreatedTimeout
```
void notifyPartitionCreatedTimeout()
```
    When the partition request listener is timeout, it will be notified to send PartitionNotFoundException.
  - releaseListener
```
void releaseListener()
```
    Release this listener.