Package org.apache.flink.runtime.state

Interface StateSnapshot.StateKeyGroupWriter

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

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 Details

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.