Github user roshannaik commented on a diff in the pull request: https://github.com/apache/storm/pull/2634#discussion_r182552073 --- Diff: storm-client/src/jvm/org/apache/storm/daemon/worker/Worker.java --- @@ -305,8 +305,9 @@ private void setupFlushTupleTimer(final Map<String, Object> topologyConf, final } private void setupBackPressureCheckTimer(final Map<String, Object> topologyConf) { - final Integer workerCount = ObjectReader.getInt(topologyConf.get(Config.TOPOLOGY_WORKERS)); - if (workerCount <= 1) { + Set<Integer> nonLocalTasks = Sets.difference(workerState.getTaskToComponent().keySet(), --- End diff -- Perhaps we can consolidate these set difference calls to count single/multiworker mode into a single function ? - https://github.com/apache/storm/blob/master/storm-client/src/jvm/org/apache/storm/daemon/worker/Worker.java#L230
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