StefanRRichter commented on a change in pull request #6707: [FLINK-10157]
[State TTL] Allow `null` user values in map state with TTL
URL: https://github.com/apache/flink/pull/6707#discussion_r219100170
##########
File path:
flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/NullableSerializer.java
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@@ -56,33 +59,51 @@
public class NullableSerializer<T> extends TypeSerializer<T> {
private static final long serialVersionUID = 3335569358214720033L;
+ @Nonnull
private final TypeSerializer<T> originalSerializer;
- private NullableSerializer(TypeSerializer<T> originalSerializer) {
+ private NullableSerializer(@Nonnull TypeSerializer<T>
originalSerializer) {
Preconditions.checkNotNull(originalSerializer, "The original
serializer cannot be null");
Review comment:
You could also remove the `Preconditions` check now that the annotation is
in place.
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