StefanRRichter commented on a change in pull request #7061:
[FLINK-10827][tests] Add test for duplicate() to SerializerTestBase
URL: https://github.com/apache/flink/pull/7061#discussion_r232249327
##########
File path:
flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/PojoSerializer.java
##########
@@ -181,11 +181,13 @@ public boolean isImmutableType() {
}
}
- if (stateful) {
- return new PojoSerializer<T>(clazz,
duplicateFieldSerializers, fields, executionConfig);
- } else {
- return this;
+ if (!stateful) {
+ // as a small memory optimization, we can share the
same object between instances
+ duplicateFieldSerializers = fieldSerializers;
}
+
+ // we must create a new instance, otherwise the
subclassSerializerCache can create concurrency problems
Review comment:
The point is that the Kryo serializer is not coming at all from the
`fieldSerializers` that we duplicate. It comes from `subclassSerializerCache`
and nothing is duplicated from there, which it also should not.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
With regards,
Apache Git Services
