Github user kishoreg commented on a diff in the pull request: https://github.com/apache/helix/pull/87#discussion_r116129454 --- Diff: helix-core/src/main/java/org/apache/helix/messaging/handling/HelixTaskExecutor.java --- @@ -143,6 +145,7 @@ public HelixTaskExecutor(ParticipantStatusMonitor participantStatusMonitor) { _hdlrFtyRegistry = new ConcurrentHashMap<String, MsgHandlerFactoryRegistryItem>(); _executorMap = new ConcurrentHashMap<String, ExecutorService>(); _batchMessageExecutorService = Executors.newCachedThreadPool(); --- End diff -- Lets have a default value here of 40 (same as the non batch executor size) for the thread pool size instead of setting it to cachedThreadPool.
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