Github user tweise commented on a diff in the pull request:
https://github.com/apache/incubator-apex-core/pull/247#discussion_r54358885
--- Diff:
engine/src/main/java/com/datatorrent/stram/StreamingContainerManager.java ---
@@ -1558,6 +1558,10 @@ public void run()
entry.getValue().recordingId = null;
}
for (ContainerStats.OperatorStats stats : statsList) {
+ if (stats == null) {
--- End diff --
I'm going to merge it, but shouldn't we ensure in the container that we
don't put null elements into the heartbeat data?
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