Package org.apache.flink.runtime.state

Class OperatorStateCheckpointOutputStream

java.lang.Object

java.io.OutputStream

org.apache.flink.runtime.state.NonClosingCheckpointOutputStream<OperatorStateHandle>

org.apache.flink.runtime.state.OperatorStateCheckpointOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

@PublicEvolving
public final class OperatorStateCheckpointOutputStream
extends NonClosingCheckpointOutputStream<OperatorStateHandle>

Checkpoint output stream that allows to write raw operator state in a partitioned way.

Field Summary

Fields inherited from class org.apache.flink.runtime.state.NonClosingCheckpointOutputStream

delegate

Constructor Summary

Constructors

Constructor	Description
OperatorStateCheckpointOutputStream(CheckpointStateOutputStream delegate)

Method Summary

Modifier and Type	Method	Description
int	getNumberOfPartitions()
void	startNewPartition()	User code can call this method to signal that it begins to write a new partition of operator state.

Methods inherited from class org.apache.flink.runtime.state.NonClosingCheckpointOutputStream

acquireLease, close, flush, write, write, write

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

OperatorStateCheckpointOutputStream

public OperatorStateCheckpointOutputStream(CheckpointStateOutputStream delegate)
                                    throws IOException

Throws:

IOException

Method Details

startNewPartition

public void startNewPartition()
                       throws IOException

User code can call this method to signal that it begins to write a new partition of operator state. Each previously written partition is considered final/immutable as soon as this method is called again.

Throws:

IOException

getNumberOfPartitions

public int getNumberOfPartitions()