Ethanlm commented on a change in pull request #3011: STORM-3395 Fix Placeholder
Topology page components show task counts
URL: https://github.com/apache/storm/pull/3011#discussion_r288288493
##########
File path:
storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java
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@@ -4214,6 +4203,22 @@ private void
maybeAddPlaceholderBoltAggStats(TopologyPageInfo topoPageInfo, Stor
}
}
+ private CommonAggregateStats getPlaceholderCommonAggregateStats(Object
component) {
+ // common aggregate
+ CommonAggregateStats commonStats = new CommonAggregateStats();
+
+ // set num_tasks and expected num_executors
+ Map<String, Object> jsonMap = StormCommon.componentConf(component);
+ int numTasks = (int) (long)
jsonMap.getOrDefault(Config.TOPOLOGY_TASKS, 0);
+ commonStats.set_num_executors(numTasks);
Review comment:
You can use `StormCommon.numStartExecutors` to get num_executors.
https://github.com/apache/storm/blob/master/storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java#L2392-L2405
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