Github user mxm commented on a diff in the pull request:
https://github.com/apache/flink/pull/896#discussion_r34335824
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/Execution.java
---
@@ -131,6 +133,35 @@
private SerializedValue<StateHandle<?>> operatorState;
+ /* Lock for updating the accumulators atomically. */
--- End diff --
If you consider comment lines as empty (non-code) lines, then it follows
the classes' style.
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