Github user knusbaum commented on a diff in the pull request: https://github.com/apache/storm/pull/694#discussion_r37785236 --- Diff: storm-core/src/clj/backtype/storm/daemon/executor.clj --- @@ -445,6 +445,32 @@ ret )) +(defn init-batching-buffer [worker-context component-id] + (let [batchSize (.get_batch_size (.getComponentCommon worker-context component-id))] + (if (> batchSize 1) + (let [consumer-ids (flatten (for [cids (vals (.getTargets worker-context component-id))] (keys cids))) + consumer-task-ids (flatten (for [cid consumer-ids :when (not (.startsWith cid "__"))] (into '() (.getComponentTasks worker-context cid))))] + (HashMap. (zipmap consumer-task-ids (repeatedly (count consumer-task-ids) #(Batch. batchSize))))) + (HashMap.) + ))) + +(defn emit-msg [out-task out-tuple overflow-buffer output-batch-buffer transfer-fn] + (let [out-batch (.get output-batch-buffer out-task)] + (if out-batch --- End diff -- Unless I misunderstand, this is going to end up being always true or always false, depending on the result of `.get_batch_size` for the component at startup. In that case, can we decide this when we're setting up the transfer function instead of each time we're emitting a tuple?
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