Github user zhuoliu commented on a diff in the pull request:
https://github.com/apache/storm/pull/847#discussion_r43797156
--- Diff: storm-core/src/clj/backtype/storm/daemon/worker.clj ---
@@ -310,6 +313,26 @@
[node (Integer/valueOf port-str)]
))
+(defn mk-refresh-load [worker]
+ (let [local-tasks (set (:task-ids worker))
+ remote-tasks (set/difference (worker-outbound-tasks worker)
local-tasks)
+ short-executor-receive-queue-map
(:short-executor-receive-queue-map worker)
+ next-update (atom 0)]
+ (fn this
+ ([]
+ (let [^LoadMapping load-mapping (:load-mapping worker)
+ local-pop (map-val (fn [queue]
+ (let [q-metrics (.getMetrics queue)]
+ (/ (double (.population q-metrics))
(.capacity q-metrics))))
+ short-executor-receive-queue-map)
+ remote-load (reduce merge (for [[np conn]
@(:cached-node+port->socket worker)] (into {} (.getLoad conn remote-tasks))))
+ now (System/currentTimeMillis)]
+ (.setLocal load-mapping local-pop)
+ (.setRemote load-mapping remote-load)
+ (when (> now @next-update)
+ (.sendLoadMetrics (:receiver worker) local-pop)
+ (reset! next-update (+ 5000 now))))))))
--- End diff --
We may bind the "5000" as a value in let[].
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