StateSnapshot.StateKeyGroupWriter (Flink : Runtime 2.0.0 API)

All Known Subinterfaces:

KeyGroupPartitioner.PartitioningResult<T>

All Known Implementing Classes:

CopyOnWriteStateTableSnapshot

Enclosing interface:

StateSnapshot
```
public static interface StateSnapshot.StateKeyGroupWriter
```
Interface for writing a snapshot that is partitioned into key-groups.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`writeStateInKeyGroup(org.apache.flink.core.memory.DataOutputView dov, int keyGroupId)`	Writes the data for the specified key-group to the output.

- Method Detail
  - writeStateInKeyGroup
```
void writeStateInKeyGroup(@Nonnull
                          org.apache.flink.core.memory.DataOutputView dov,
                          @Nonnegative
                          int keyGroupId)
                   throws IOException
```
    Writes the data for the specified key-group to the output. You must call StateSnapshot.getKeyGroupWriter() once before first calling this method.
    
    Parameters:
    
    dov - the output.
    
    keyGroupId - the key-group to write.
    
    Throws:
    
    IOException - on write-related problems.