Github user revans2 commented on a diff in the pull request: https://github.com/apache/storm/pull/2504#discussion_r160241948 --- Diff: storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java --- @@ -1081,6 +1088,14 @@ public Nimbus(Map<String, Object> conf, INimbus inimbus, IStormClusterState stor BlobStore blobStore, TopoCache topoCache, ILeaderElector leaderElector, IGroupMappingServiceProvider groupMapper) throws Exception { this.conf = conf; + + this.metricsStore = null; --- End diff -- Can we verify that if the metricsStore is null that we don't get any NullPointerExceptions in really bad places.
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