Package org.apache.flink.runtime.state

Class KeyedBackendSerializationProxy<K>

java.lang.Object

org.apache.flink.core.io.VersionedIOReadableWritable

org.apache.flink.runtime.state.KeyedBackendSerializationProxy<K>

All Implemented Interfaces:

org.apache.flink.core.io.IOReadableWritable, org.apache.flink.core.io.Versioned

public class KeyedBackendSerializationProxy<K>
extends org.apache.flink.core.io.VersionedIOReadableWritable

Serialization proxy for all meta data in keyed state backends. In the future we might also requiresMigration the actual state serialization logic here.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	VERSION

Constructor Summary

Constructors

Constructor	Description
KeyedBackendSerializationProxy(ClassLoader userCodeClassLoader)
KeyedBackendSerializationProxy(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, List<StateMetaInfoSnapshot> stateMetaInfoSnapshots, boolean compression)

Method Summary

Modifier and Type	Method	Description
Optional<String>	getAdditionalDetailsForIncompatibleVersion(int readVersion)
int[]	getCompatibleVersions()
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<K>	getKeySerializerSnapshot()
List<StateMetaInfoSnapshot>	getStateMetaInfoSnapshots()
int	getVersion()
boolean	isUsingKeyGroupCompression()
void	read(org.apache.flink.core.memory.DataInputView in)
void	write(org.apache.flink.core.memory.DataOutputView out)

Methods inherited from class org.apache.flink.core.io.VersionedIOReadableWritable

getReadVersion

Methods inherited from class java.lang.Object

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

Field Details

VERSION

public static final int VERSION

See Also:

• Constant Field Values

Constructor Details

KeyedBackendSerializationProxy

public KeyedBackendSerializationProxy(ClassLoader userCodeClassLoader)

KeyedBackendSerializationProxy

public KeyedBackendSerializationProxy(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
 List<StateMetaInfoSnapshot> stateMetaInfoSnapshots,
 boolean compression)

Method Details

getStateMetaInfoSnapshots

public List<StateMetaInfoSnapshot> getStateMetaInfoSnapshots()

getKeySerializerSnapshot

public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<K> getKeySerializerSnapshot()

isUsingKeyGroupCompression

public boolean isUsingKeyGroupCompression()

getVersion

public int getVersion()

getCompatibleVersions

public int[] getCompatibleVersions()

Overrides:

getCompatibleVersions in class org.apache.flink.core.io.VersionedIOReadableWritable

getAdditionalDetailsForIncompatibleVersion

public Optional<String> getAdditionalDetailsForIncompatibleVersion(int readVersion)

Overrides:

getAdditionalDetailsForIncompatibleVersion in class org.apache.flink.core.io.VersionedIOReadableWritable

write

public void write(org.apache.flink.core.memory.DataOutputView out)
           throws IOException

Specified by:

write in interface org.apache.flink.core.io.IOReadableWritable

Overrides:

write in class org.apache.flink.core.io.VersionedIOReadableWritable

Throws:

IOException

read

public void read(org.apache.flink.core.memory.DataInputView in)
          throws IOException

Specified by:

read in interface org.apache.flink.core.io.IOReadableWritable

Overrides:

read in class org.apache.flink.core.io.VersionedIOReadableWritable

Throws:

IOException