Java Code Examples for org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshotReadersWriters#getReader()

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Example 1
Source File: SerializationProxiesTest.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up
@Test
public void testKeyedStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> namespaceSerializer = LongSerializer.INSTANCE;
	TypeSerializer<?> stateSerializer = DoubleSerializer.INSTANCE;

	StateMetaInfoSnapshot metaInfo = new RegisteredKeyValueStateBackendMetaInfo<>(
		StateDescriptor.Type.VALUE, name, namespaceSerializer, stateSerializer).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().
			writeStateMetaInfoSnapshot(metaInfo, new DataOutputViewStreamWrapper(out));
		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.KEYED_STATE);
		metaInfo = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	Assert.assertEquals(name, metaInfo.getName());
}
 
Example 2
Source File: SerializationProxiesTest.java    From flink with Apache License 2.0 6 votes vote down vote up
@Test
public void testKeyedStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> namespaceSerializer = LongSerializer.INSTANCE;
	TypeSerializer<?> stateSerializer = DoubleSerializer.INSTANCE;

	StateMetaInfoSnapshot metaInfo = new RegisteredKeyValueStateBackendMetaInfo<>(
		StateDescriptor.Type.VALUE, name, namespaceSerializer, stateSerializer).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().
			writeStateMetaInfoSnapshot(metaInfo, new DataOutputViewStreamWrapper(out));
		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.KEYED_STATE);
		metaInfo = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	Assert.assertEquals(name, metaInfo.getName());
}
 
Example 3
Source File: SerializationProxiesTest.java    From flink with Apache License 2.0 6 votes vote down vote up
@Test
public void testKeyedStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> namespaceSerializer = LongSerializer.INSTANCE;
	TypeSerializer<?> stateSerializer = DoubleSerializer.INSTANCE;

	StateMetaInfoSnapshot metaInfo = new RegisteredKeyValueStateBackendMetaInfo<>(
		StateDescriptor.Type.VALUE, name, namespaceSerializer, stateSerializer).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().
			writeStateMetaInfoSnapshot(metaInfo, new DataOutputViewStreamWrapper(out));
		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.KEYED_STATE);
		metaInfo = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	Assert.assertEquals(name, metaInfo.getName());
}
 
Example 4
Source File: OperatorBackendSerializationProxy.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up
@Override
public void read(DataInputView in) throws IOException {
	super.read(in);

	final int proxyReadVersion = getReadVersion();
	final Integer metaInfoSnapshotVersion = META_INFO_SNAPSHOT_FORMAT_VERSION_MAPPER.get(proxyReadVersion);
	if (metaInfoSnapshotVersion == null) {
		// this should not happen; guard for the future
		throw new IOException("Cannot determine corresponding meta info snapshot version for operator backend serialization readVersion=" + proxyReadVersion);
	}

	final StateMetaInfoReader stateMetaInfoReader = StateMetaInfoSnapshotReadersWriters.getReader(
		metaInfoSnapshotVersion,
		StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);

	int numOperatorStates = in.readShort();
	operatorStateMetaInfoSnapshots = new ArrayList<>(numOperatorStates);
	for (int i = 0; i < numOperatorStates; i++) {
		operatorStateMetaInfoSnapshots.add(
			stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader));
	}

	if (proxyReadVersion >= 3) {
		// broadcast states did not exist prior to version 3
		int numBroadcastStates = in.readShort();
		broadcastStateMetaInfoSnapshots = new ArrayList<>(numBroadcastStates);
		for (int i = 0; i < numBroadcastStates; i++) {
			broadcastStateMetaInfoSnapshots.add(
				stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader));
		}
	} else {
		broadcastStateMetaInfoSnapshots = new ArrayList<>();
	}
}
 
Example 5
Source File: SerializationProxiesTest.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up
@Test
public void testOperatorStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> stateSerializer = DoubleSerializer.INSTANCE;

	StateMetaInfoSnapshot snapshot =
		new RegisteredOperatorStateBackendMetaInfo<>(
			name, stateSerializer, OperatorStateHandle.Mode.UNION).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().writeStateMetaInfoSnapshot(snapshot, new DataOutputViewStreamWrapper(out));

		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);
		snapshot = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	RegisteredOperatorStateBackendMetaInfo<?> restoredMetaInfo =
		new RegisteredOperatorStateBackendMetaInfo<>(snapshot);

	Assert.assertEquals(name, restoredMetaInfo.getName());
	Assert.assertEquals(OperatorStateHandle.Mode.UNION, restoredMetaInfo.getAssignmentMode());
	Assert.assertEquals(stateSerializer, restoredMetaInfo.getPartitionStateSerializer());
}
 
Example 6
Source File: SerializationProxiesTest.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up
@Test
public void testBroadcastStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> keySerializer = DoubleSerializer.INSTANCE;
	TypeSerializer<?> valueSerializer = StringSerializer.INSTANCE;

	StateMetaInfoSnapshot snapshot =
		new RegisteredBroadcastStateBackendMetaInfo<>(
			name, OperatorStateHandle.Mode.BROADCAST, keySerializer, valueSerializer).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().
			writeStateMetaInfoSnapshot(snapshot, new DataOutputViewStreamWrapper(out));

		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);
		snapshot = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	RegisteredBroadcastStateBackendMetaInfo<?, ?> restoredMetaInfo =
		new RegisteredBroadcastStateBackendMetaInfo<>(snapshot);

	Assert.assertEquals(name, restoredMetaInfo.getName());
	Assert.assertEquals(
		OperatorStateHandle.Mode.BROADCAST,
		restoredMetaInfo.getAssignmentMode());
	Assert.assertEquals(keySerializer, restoredMetaInfo.getKeySerializer());
	Assert.assertEquals(valueSerializer, restoredMetaInfo.getValueSerializer());
}
 
Example 7
Source File: OperatorBackendSerializationProxy.java    From flink with Apache License 2.0 5 votes vote down vote up
@Override
public void read(DataInputView in) throws IOException {
	super.read(in);

	final int proxyReadVersion = getReadVersion();
	final Integer metaInfoSnapshotVersion = META_INFO_SNAPSHOT_FORMAT_VERSION_MAPPER.get(proxyReadVersion);
	if (metaInfoSnapshotVersion == null) {
		// this should not happen; guard for the future
		throw new IOException("Cannot determine corresponding meta info snapshot version for operator backend serialization readVersion=" + proxyReadVersion);
	}

	final StateMetaInfoReader stateMetaInfoReader = StateMetaInfoSnapshotReadersWriters.getReader(
		metaInfoSnapshotVersion,
		StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);

	int numOperatorStates = in.readShort();
	operatorStateMetaInfoSnapshots = new ArrayList<>(numOperatorStates);
	for (int i = 0; i < numOperatorStates; i++) {
		operatorStateMetaInfoSnapshots.add(
			stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader));
	}

	if (proxyReadVersion >= 3) {
		// broadcast states did not exist prior to version 3
		int numBroadcastStates = in.readShort();
		broadcastStateMetaInfoSnapshots = new ArrayList<>(numBroadcastStates);
		for (int i = 0; i < numBroadcastStates; i++) {
			broadcastStateMetaInfoSnapshots.add(
				stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader));
		}
	} else {
		broadcastStateMetaInfoSnapshots = new ArrayList<>();
	}
}
 
Example 8
Source File: SerializationProxiesTest.java    From flink with Apache License 2.0 5 votes vote down vote up
@Test
public void testOperatorStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> stateSerializer = DoubleSerializer.INSTANCE;

	StateMetaInfoSnapshot snapshot =
		new RegisteredOperatorStateBackendMetaInfo<>(
			name, stateSerializer, OperatorStateHandle.Mode.UNION).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().writeStateMetaInfoSnapshot(snapshot, new DataOutputViewStreamWrapper(out));

		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);
		snapshot = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	RegisteredOperatorStateBackendMetaInfo<?> restoredMetaInfo =
		new RegisteredOperatorStateBackendMetaInfo<>(snapshot);

	Assert.assertEquals(name, restoredMetaInfo.getName());
	Assert.assertEquals(OperatorStateHandle.Mode.UNION, restoredMetaInfo.getAssignmentMode());
	Assert.assertEquals(stateSerializer, restoredMetaInfo.getPartitionStateSerializer());
}
 
Example 9
Source File: SerializationProxiesTest.java    From flink with Apache License 2.0 5 votes vote down vote up
@Test
public void testBroadcastStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> keySerializer = DoubleSerializer.INSTANCE;
	TypeSerializer<?> valueSerializer = StringSerializer.INSTANCE;

	StateMetaInfoSnapshot snapshot =
		new RegisteredBroadcastStateBackendMetaInfo<>(
			name, OperatorStateHandle.Mode.BROADCAST, keySerializer, valueSerializer).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().
			writeStateMetaInfoSnapshot(snapshot, new DataOutputViewStreamWrapper(out));

		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);
		snapshot = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	RegisteredBroadcastStateBackendMetaInfo<?, ?> restoredMetaInfo =
		new RegisteredBroadcastStateBackendMetaInfo<>(snapshot);

	Assert.assertEquals(name, restoredMetaInfo.getName());
	Assert.assertEquals(
		OperatorStateHandle.Mode.BROADCAST,
		restoredMetaInfo.getAssignmentMode());
	Assert.assertEquals(keySerializer, restoredMetaInfo.getKeySerializer());
	Assert.assertEquals(valueSerializer, restoredMetaInfo.getValueSerializer());
}
 
Example 10
Source File: OperatorBackendSerializationProxy.java    From flink with Apache License 2.0 5 votes vote down vote up
@Override
public void read(DataInputView in) throws IOException {
	super.read(in);

	final int proxyReadVersion = getReadVersion();
	final Integer metaInfoSnapshotVersion = META_INFO_SNAPSHOT_FORMAT_VERSION_MAPPER.get(proxyReadVersion);
	if (metaInfoSnapshotVersion == null) {
		// this should not happen; guard for the future
		throw new IOException("Cannot determine corresponding meta info snapshot version for operator backend serialization readVersion=" + proxyReadVersion);
	}

	final StateMetaInfoReader stateMetaInfoReader = StateMetaInfoSnapshotReadersWriters.getReader(
		metaInfoSnapshotVersion,
		StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);

	int numOperatorStates = in.readShort();
	operatorStateMetaInfoSnapshots = new ArrayList<>(numOperatorStates);
	for (int i = 0; i < numOperatorStates; i++) {
		operatorStateMetaInfoSnapshots.add(
			stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader));
	}

	if (proxyReadVersion >= 3) {
		// broadcast states did not exist prior to version 3
		int numBroadcastStates = in.readShort();
		broadcastStateMetaInfoSnapshots = new ArrayList<>(numBroadcastStates);
		for (int i = 0; i < numBroadcastStates; i++) {
			broadcastStateMetaInfoSnapshots.add(
				stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader));
		}
	} else {
		broadcastStateMetaInfoSnapshots = new ArrayList<>();
	}
}
 
Example 11
Source File: SerializationProxiesTest.java    From flink with Apache License 2.0 5 votes vote down vote up
@Test
public void testOperatorStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> stateSerializer = DoubleSerializer.INSTANCE;

	StateMetaInfoSnapshot snapshot =
		new RegisteredOperatorStateBackendMetaInfo<>(
			name, stateSerializer, OperatorStateHandle.Mode.UNION).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().writeStateMetaInfoSnapshot(snapshot, new DataOutputViewStreamWrapper(out));

		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);
		snapshot = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	RegisteredOperatorStateBackendMetaInfo<?> restoredMetaInfo =
		new RegisteredOperatorStateBackendMetaInfo<>(snapshot);

	Assert.assertEquals(name, restoredMetaInfo.getName());
	Assert.assertEquals(OperatorStateHandle.Mode.UNION, restoredMetaInfo.getAssignmentMode());
	Assert.assertEquals(stateSerializer, restoredMetaInfo.getPartitionStateSerializer());
}
 
Example 12
Source File: SerializationProxiesTest.java    From flink with Apache License 2.0 5 votes vote down vote up
@Test
public void testBroadcastStateMetaInfoSerialization() throws Exception {

	String name = "test";
	TypeSerializer<?> keySerializer = DoubleSerializer.INSTANCE;
	TypeSerializer<?> valueSerializer = StringSerializer.INSTANCE;

	StateMetaInfoSnapshot snapshot =
		new RegisteredBroadcastStateBackendMetaInfo<>(
			name, OperatorStateHandle.Mode.BROADCAST, keySerializer, valueSerializer).snapshot();

	byte[] serialized;
	try (ByteArrayOutputStreamWithPos out = new ByteArrayOutputStreamWithPos()) {
		StateMetaInfoSnapshotReadersWriters.getWriter().
			writeStateMetaInfoSnapshot(snapshot, new DataOutputViewStreamWrapper(out));

		serialized = out.toByteArray();
	}

	try (ByteArrayInputStreamWithPos in = new ByteArrayInputStreamWithPos(serialized)) {
		final StateMetaInfoReader reader = StateMetaInfoSnapshotReadersWriters.getReader(
			CURRENT_STATE_META_INFO_SNAPSHOT_VERSION, StateMetaInfoSnapshotReadersWriters.StateTypeHint.OPERATOR_STATE);
		snapshot = reader.readStateMetaInfoSnapshot(
			new DataInputViewStreamWrapper(in), Thread.currentThread().getContextClassLoader());
	}

	RegisteredBroadcastStateBackendMetaInfo<?, ?> restoredMetaInfo =
		new RegisteredBroadcastStateBackendMetaInfo<>(snapshot);

	Assert.assertEquals(name, restoredMetaInfo.getName());
	Assert.assertEquals(
		OperatorStateHandle.Mode.BROADCAST,
		restoredMetaInfo.getAssignmentMode());
	Assert.assertEquals(keySerializer, restoredMetaInfo.getKeySerializer());
	Assert.assertEquals(valueSerializer, restoredMetaInfo.getValueSerializer());
}
 
Example 13
Source File: KeyedBackendSerializationProxy.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up
@SuppressWarnings("unchecked")
@Override
public void read(DataInputView in) throws IOException {
	super.read(in);

	final int readVersion = getReadVersion();

	if (readVersion >= 4) {
		usingKeyGroupCompression = in.readBoolean();
	} else {
		usingKeyGroupCompression = false;
	}

	// only starting from version 3, we have the key serializer and its config snapshot written
	if (readVersion >= 6) {
		this.keySerializerSnapshot = TypeSerializerSnapshotSerializationUtil.readSerializerSnapshot(
			in, userCodeClassLoader, null);
	} else if (readVersion >= 3) {
		Tuple2<TypeSerializer<?>, TypeSerializerSnapshot<?>> keySerializerAndConfig =
				TypeSerializerSerializationUtil.readSerializersAndConfigsWithResilience(in, userCodeClassLoader).get(0);
		this.keySerializerSnapshot = (TypeSerializerSnapshot<K>) keySerializerAndConfig.f1;
	} else {
		this.keySerializerSnapshot = new BackwardsCompatibleSerializerSnapshot<>(
			TypeSerializerSerializationUtil.tryReadSerializer(in, userCodeClassLoader, true));
	}
	this.keySerializer = null;

	Integer metaInfoSnapshotVersion = META_INFO_SNAPSHOT_FORMAT_VERSION_MAPPER.get(readVersion);
	if (metaInfoSnapshotVersion == null) {
		// this should not happen; guard for the future
		throw new IOException("Cannot determine corresponding meta info snapshot version for keyed backend serialization readVersion=" + readVersion);
	}
	final StateMetaInfoReader stateMetaInfoReader = StateMetaInfoSnapshotReadersWriters.getReader(
		metaInfoSnapshotVersion,
		StateMetaInfoSnapshotReadersWriters.StateTypeHint.KEYED_STATE);

	int numKvStates = in.readShort();
	stateMetaInfoSnapshots = new ArrayList<>(numKvStates);
	for (int i = 0; i < numKvStates; i++) {
		StateMetaInfoSnapshot snapshot = stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader);

		stateMetaInfoSnapshots.add(snapshot);
	}
}
 
Example 14
Source File: KeyedBackendSerializationProxy.java    From flink with Apache License 2.0 4 votes vote down vote up
@SuppressWarnings("unchecked")
@Override
public void read(DataInputView in) throws IOException {
	super.read(in);

	final int readVersion = getReadVersion();

	if (readVersion >= 4) {
		usingKeyGroupCompression = in.readBoolean();
	} else {
		usingKeyGroupCompression = false;
	}

	// only starting from version 3, we have the key serializer and its config snapshot written
	if (readVersion >= 6) {
		this.keySerializerSnapshot = TypeSerializerSnapshotSerializationUtil.readSerializerSnapshot(
			in, userCodeClassLoader, null);
	} else if (readVersion >= 3) {
		Tuple2<TypeSerializer<?>, TypeSerializerSnapshot<?>> keySerializerAndConfig =
				TypeSerializerSerializationUtil.readSerializersAndConfigsWithResilience(in, userCodeClassLoader).get(0);
		this.keySerializerSnapshot = (TypeSerializerSnapshot<K>) keySerializerAndConfig.f1;
	} else {
		this.keySerializerSnapshot = new BackwardsCompatibleSerializerSnapshot<>(
			TypeSerializerSerializationUtil.tryReadSerializer(in, userCodeClassLoader, true));
	}
	this.keySerializer = null;

	Integer metaInfoSnapshotVersion = META_INFO_SNAPSHOT_FORMAT_VERSION_MAPPER.get(readVersion);
	if (metaInfoSnapshotVersion == null) {
		// this should not happen; guard for the future
		throw new IOException("Cannot determine corresponding meta info snapshot version for keyed backend serialization readVersion=" + readVersion);
	}
	final StateMetaInfoReader stateMetaInfoReader = StateMetaInfoSnapshotReadersWriters.getReader(
		metaInfoSnapshotVersion,
		StateMetaInfoSnapshotReadersWriters.StateTypeHint.KEYED_STATE);

	int numKvStates = in.readShort();
	stateMetaInfoSnapshots = new ArrayList<>(numKvStates);
	for (int i = 0; i < numKvStates; i++) {
		StateMetaInfoSnapshot snapshot = stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader);

		stateMetaInfoSnapshots.add(snapshot);
	}
}
 
Example 15
Source File: KeyedBackendSerializationProxy.java    From flink with Apache License 2.0 4 votes vote down vote up
@SuppressWarnings("unchecked")
@Override
public void read(DataInputView in) throws IOException {
	super.read(in);

	final int readVersion = getReadVersion();

	if (readVersion >= 4) {
		usingKeyGroupCompression = in.readBoolean();
	} else {
		usingKeyGroupCompression = false;
	}

	// only starting from version 3, we have the key serializer and its config snapshot written
	if (readVersion >= 6) {
		this.keySerializerSnapshot = TypeSerializerSnapshotSerializationUtil.readSerializerSnapshot(
			in, userCodeClassLoader, null);
	} else if (readVersion >= 3) {
		Tuple2<TypeSerializer<?>, TypeSerializerSnapshot<?>> keySerializerAndConfig =
				TypeSerializerSerializationUtil.readSerializersAndConfigsWithResilience(in, userCodeClassLoader).get(0);
		this.keySerializerSnapshot = (TypeSerializerSnapshot<K>) keySerializerAndConfig.f1;
	} else {
		this.keySerializerSnapshot = new BackwardsCompatibleSerializerSnapshot<>(
			TypeSerializerSerializationUtil.tryReadSerializer(in, userCodeClassLoader, true));
	}
	this.keySerializer = null;

	Integer metaInfoSnapshotVersion = META_INFO_SNAPSHOT_FORMAT_VERSION_MAPPER.get(readVersion);
	if (metaInfoSnapshotVersion == null) {
		// this should not happen; guard for the future
		throw new IOException("Cannot determine corresponding meta info snapshot version for keyed backend serialization readVersion=" + readVersion);
	}
	final StateMetaInfoReader stateMetaInfoReader = StateMetaInfoSnapshotReadersWriters.getReader(
		metaInfoSnapshotVersion,
		StateMetaInfoSnapshotReadersWriters.StateTypeHint.KEYED_STATE);

	int numKvStates = in.readShort();
	stateMetaInfoSnapshots = new ArrayList<>(numKvStates);
	for (int i = 0; i < numKvStates; i++) {
		StateMetaInfoSnapshot snapshot = stateMetaInfoReader.readStateMetaInfoSnapshot(in, userCodeClassLoader);

		stateMetaInfoSnapshots.add(snapshot);
	}
}