Github user sihuazhou commented on a diff in the pull request:
https://github.com/apache/flink/pull/6333#discussion_r202518473
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/state/RegisteredBroadcastStateBackendMetaInfo.java
---
@@ -63,54 +72,46 @@ public
RegisteredBroadcastBackendStateMetaInfo(RegisteredBroadcastBackendStateMe
}
@SuppressWarnings("unchecked")
- public RegisteredBroadcastBackendStateMetaInfo(@Nonnull
StateMetaInfoSnapshot snapshot) {
+ public RegisteredBroadcastStateBackendMetaInfo(@Nonnull
StateMetaInfoSnapshot snapshot) {
this(
snapshot.getName(),
OperatorStateHandle.Mode.valueOf(
snapshot.getOption(StateMetaInfoSnapshot.CommonOptionsKeys.OPERATOR_STATE_DISTRIBUTION_MODE)),
- (TypeSerializer<K>)
snapshot.getTypeSerializer(StateMetaInfoSnapshot.CommonSerializerKeys.KEY_SERIALIZER),
- (TypeSerializer<V>)
snapshot.getTypeSerializer(StateMetaInfoSnapshot.CommonSerializerKeys.VALUE_SERIALIZER));
+ (TypeSerializer<K>) Preconditions.checkNotNull(
+
snapshot.getTypeSerializer(StateMetaInfoSnapshot.CommonSerializerKeys.KEY_SERIALIZER)),
+ (TypeSerializer<V>) Preconditions.checkNotNull(
+
snapshot.getTypeSerializer(StateMetaInfoSnapshot.CommonSerializerKeys.VALUE_SERIALIZER)));
Preconditions.checkState(StateMetaInfoSnapshot.BackendStateType.BROADCAST ==
snapshot.getBackendStateType());
}
/**
* Creates a deep copy of the itself.
*/
- public RegisteredBroadcastBackendStateMetaInfo<K, V> deepCopy() {
- return new RegisteredBroadcastBackendStateMetaInfo<>(this);
+ @Nonnull
+ public RegisteredBroadcastStateBackendMetaInfo<K, V> deepCopy() {
+ return new RegisteredBroadcastStateBackendMetaInfo<>(this);
}
@Nonnull
@Override
public StateMetaInfoSnapshot snapshot() {
- Map<String, String> optionsMap = Collections.singletonMap(
-
StateMetaInfoSnapshot.CommonOptionsKeys.OPERATOR_STATE_DISTRIBUTION_MODE.toString(),
- assignmentMode.toString());
- Map<String, TypeSerializer<?>> serializerMap = new HashMap<>(2);
- Map<String, TypeSerializerConfigSnapshot>
serializerConfigSnapshotsMap = new HashMap<>(2);
- String keySerializerKey =
StateMetaInfoSnapshot.CommonSerializerKeys.KEY_SERIALIZER.toString();
- String valueSerializerKey =
StateMetaInfoSnapshot.CommonSerializerKeys.VALUE_SERIALIZER.toString();
- serializerMap.put(keySerializerKey, keySerializer.duplicate());
- serializerConfigSnapshotsMap.put(keySerializerKey,
keySerializer.snapshotConfiguration());
- serializerMap.put(valueSerializerKey,
valueSerializer.duplicate());
- serializerConfigSnapshotsMap.put(valueSerializerKey,
valueSerializer.snapshotConfiguration());
-
- return new StateMetaInfoSnapshot(
- name,
- StateMetaInfoSnapshot.BackendStateType.BROADCAST,
- optionsMap,
- serializerConfigSnapshotsMap,
- serializerMap);
+ if (precomputedSnapshot == null) {
+ precomputedSnapshot = precomputeSnapshot();
+ }
+ return precomputedSnapshot;
--- End diff --
What if the serializers are not all immutable? Should we need a `immutable`
field for it? Only when it is true we return the `precomputeSnapshot`.
---
