Github user arunmahadevan commented on a diff in the pull request: https://github.com/apache/storm/pull/2241#discussion_r129479581 --- Diff: storm-client/src/jvm/org/apache/storm/daemon/worker/WorkerState.java --- @@ -488,84 +476,55 @@ public void registerCallbacks() { LOG.info("Registering IConnectionCallbacks for {}:{}", assignmentId, port); receiver.registerRecv(new DeserializingConnectionCallback(topologyConf, getWorkerTopologyContext(), - this::transferLocal)); + this::transferLocalBatch)); } - public void transferLocal(List<AddressedTuple> tupleBatch) { - Map<Integer, List<AddressedTuple>> grouped = new HashMap<>(); - for (AddressedTuple tuple : tupleBatch) { - Integer executor = taskToShortExecutor.get(tuple.dest); - if (null == executor) { - LOG.warn("Received invalid messages for unknown tasks. Dropping... "); - continue; - } - List<AddressedTuple> current = grouped.get(executor); - if (null == current) { - current = new ArrayList<>(); - grouped.put(executor, current); - } - current.add(tuple); - } - for (Map.Entry<Integer, List<AddressedTuple>> entry : grouped.entrySet()) { - DisruptorQueue queue = shortExecutorReceiveQueueMap.get(entry.getKey()); - if (null != queue) { - queue.publish(entry.getValue()); - } else { - LOG.warn("Received invalid messages for unknown tasks. Dropping... "); + private void transferLocalBatch(List<AddressedTuple> tupleBatch) { + try { + for (int i = 0; i < tupleBatch.size(); i++) { --- End diff -- For non random access lists the perf will get worse. So change the signature `transferLocalBatch` to accept `ArrayList<AddressedTuple>`.
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