org.apache.flink.runtime.state.changelog

Class StateChangelogHandleStreamHandleReader

java.lang.Object

org.apache.flink.runtime.state.changelog.StateChangelogHandleStreamHandleReader

All Implemented Interfaces:

StateChangelogHandleReader<ChangelogStateHandleStreamImpl>

@Internal
public class StateChangelogHandleStreamHandleReader
extends Object
implements StateChangelogHandleReader<ChangelogStateHandleStreamImpl>

A reader for ChangelogStateHandleStreamImpl that iterates over its underlying stream handles and offsets. Starting from each offset, it enumerates the state changes using the provided StateChangelogHandleStreamHandleReader.StateChangeIterator. Different StateChangelogStorage implementations may have different iterator implementations. Using a different ChangelogStateHandle (and reader) is problematic as it needs to be serialized.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	StateChangelogHandleStreamHandleReader.StateChangeIterator Reads a stream of state changes starting from a specified offset.

Constructor Summary

Constructors

Constructor and Description
StateChangelogHandleStreamHandleReader(StateChangelogHandleStreamHandleReader.StateChangeIterator changeIterator)

Method Summary

Modifier and Type	Method and Description
CloseableIterator<StateChange>	getChanges(ChangelogStateHandleStreamImpl handle)

Methods inherited from class java.lang.Object

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

Constructor Detail

StateChangelogHandleStreamHandleReader

public StateChangelogHandleStreamHandleReader(StateChangelogHandleStreamHandleReader.StateChangeIterator changeIterator)

Method Detail

getChanges

public CloseableIterator<StateChange> getChanges(ChangelogStateHandleStreamImpl handle)
                                          throws IOException

Specified by:

getChanges in interface StateChangelogHandleReader<ChangelogStateHandleStreamImpl>

Throws:

IOException