Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/896#discussion_r34550310
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/functions/RuntimeContext.java
---
@@ -101,9 +101,9 @@
/**
* For system internal usage only. Use getAccumulator(...) to obtain a
- * accumulator. Use this as read-only.
+ * accumulator. The returned map must NOT be modified.
*/
- HashMap<String, Accumulator<?, ?>> getAllAccumulators();
+ Map<String, Accumulator<?, ?>> getAllAccumulators();
--- End diff --
OK, then we should change the comment. :)
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