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From StephanEwen <...@git.apache.org>
Subject [GitHub] flink pull request #3610: [FLINK-6183]/[FLINK-6184] Prevent some NPE and unc...
Date Tue, 28 Mar 2017 17:07:05 GMT
Github user StephanEwen commented on a diff in the pull request:

    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/metrics/groups/TaskManagerJobMetricGroup.java
    @@ -80,8 +80,17 @@ public TaskMetricGroup addTask(
    -				tasks.put(executionAttemptID, task);
    -				return task;
    +				TaskMetricGroup prior = tasks.put(executionAttemptID, task);
    +				if (prior == null) {
    +					return task;
    --- End diff --
    Can you avoid adding `closeLocally()` by simply doing a "contains()" check before creating
the group?

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