Github user chandnisingh commented on a diff in the pull request:
https://github.com/apache/incubator-apex-core/pull/190#discussion_r48306947
--- Diff:
engine/src/test/java/com/datatorrent/stram/engine/AutoMetricTest.java ---
@@ -361,6 +394,31 @@ public int getMyMetric()
}
}
+ public static class OperatorAndAggregator extends OperatorWithMetrics
implements AutoMetric.Aggregator, Serializable
--- End diff --
This is because OperatorMeta needs to be Serializable. OperatorMeta
contains MetricsAggregatorMeta which comprises of AutoMetric.Aggregator and
AutoMetric.DimensionScheme.
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