Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/2252#discussion_r70956526
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/state/memory/AbstractMemStateSnapshot.java
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@@ -54,6 +56,8 @@
/** The serialized data of the state key/value pairs */
private final byte[] data;
+
+ private transient boolean closed;
--- End diff --
I think it is not crucial to have a strict barrier here. If the reading
thread eventually notices the flag, it is enough. And since volatile accesses
are much more expensive, I wanted to avoid that.
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