org.apache.flink.streaming.runtime.operators

Class GenericWriteAheadSink.ExactlyOnceState

java.lang.Object

org.apache.flink.streaming.runtime.operators.GenericWriteAheadSink.ExactlyOnceState

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, org.apache.flink.runtime.state.StateHandle<Serializable>, org.apache.flink.runtime.state.StateObject

Enclosing class:

GenericWriteAheadSink<IN>

public static class GenericWriteAheadSink.ExactlyOnceState
extends Object
implements org.apache.flink.runtime.state.StateHandle<Serializable>

This state is used to keep a list of all StateHandles (essentially references to past OperatorStates) that were used since the last completed checkpoint.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected TreeMap<Long,org.apache.flink.api.java.tuple.Tuple2<Long,org.apache.flink.runtime.state.StateHandle<org.apache.flink.core.memory.DataInputView>>>	pendingHandles

Constructor Summary

Constructors

Constructor and Description
ExactlyOnceState()

Method Summary

Modifier and Type	Method and Description
void	close()
void	discardState()
TreeMap<Long,org.apache.flink.api.java.tuple.Tuple2<Long,org.apache.flink.runtime.state.StateHandle<org.apache.flink.core.memory.DataInputView>>>	getState(ClassLoader userCodeClassLoader)
long	getStateSize()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

pendingHandles

protected TreeMap<Long,org.apache.flink.api.java.tuple.Tuple2<Long,org.apache.flink.runtime.state.StateHandle<org.apache.flink.core.memory.DataInputView>>> pendingHandles

Constructor Detail

ExactlyOnceState

public ExactlyOnceState()

Method Detail

getState

public TreeMap<Long,org.apache.flink.api.java.tuple.Tuple2<Long,org.apache.flink.runtime.state.StateHandle<org.apache.flink.core.memory.DataInputView>>> getState(ClassLoader userCodeClassLoader)
                                                                                                                                                           throws Exception

Specified by:

getState in interface org.apache.flink.runtime.state.StateHandle<Serializable>

Throws:

Exception

discardState

public void discardState()
                  throws Exception

Specified by:

discardState in interface org.apache.flink.runtime.state.StateObject

Throws:

Exception

getStateSize

public long getStateSize()
                  throws Exception

Specified by:

getStateSize in interface org.apache.flink.runtime.state.StateObject

Throws:

Exception

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object