我的CEP流量很高，每秒有100多条消息。
我将处理结果发布到具有以下配置的JMS发布者：
Output Event Adapter Type* : JMS
JNDI Initial Context Factory Class: org.apache.activemq.jndi.ActiveMQInitialContextFactory
JNDI Provider URL *: tcp://localhost:61616
Connection Factory JNDI Name *: QueueConnectionFactory
Destination Type *: Queue
Destination *: myqueue
另外，为了尝试问题是没有并发我添加：
Concurrent Publishers: Allow
到JMSPublisher
我收到以下错误：
ERROR {org.wso2.carbon.event.output.adapter.jms.JMSEventAdapter} -
Event dropped at Output Adapter 'kpis' for tenant id '-1234',
Job queue is full, Task java.util.concurrent.FutureTask@5651dd6c
rejected from java.util.concurrent.ThreadPoolExecutor@3c8c7b29
[Running, pool size =1, active threads = 1, queued tasks = 10000,
completed tasks = 176986]
java.util.concurrent.RejectedExecutionException: Task
java.util.concurrent.FutureTask@5651dd6c rejected from
java.util.concurrent.ThreadPoolExecutor@3c8c7b29[Running, pool size = 1,
active threads = 1, queued tasks = 10000, completed tasks = 176986]
对JMS activemq的吞吐量是否有任何限制？
此外，到目前为止，我正在编写所有消息的队列中没有消费者。这会对WSO2 CEP发布者造成负面影响，从而导致该错误并降低性能吗？
从在线阅读一些信息看起来这可能是游泳池大小的直接问题！
是否可以增加JMSEventAdapter池大小？如果是，那怎么样？
完全堆积痕迹：
ERROR {org.wso2.carbon.event.output.ad apter.jms.JMSEventAdapter} - Event dropped at Output Adapter 'kpis' for tenant id '-1234', Job queue is full, Task java.util.concurrent.FutureTask@745cb718 rejected from java.util.concurrent.ThreadPoolExecutor@3a7d9bcf[Running, pool size = 100, active threads = 100, queued tasks = 10000, completed tasks = 5151]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@745cb718 rejected from java.util.concurrent.ThreadPoolExecutor@3a7d9bcf[Running, pool size = 100, active threads = 100, queued tasks = 10000, completed tasks = 5151]
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
at org.wso2.carbon.event.output.adapter.jms.JMSEventAdapter.publish(JMSEventAdapter.java:142)
at org.wso2.carbon.event.output.adapter.core.internal.OutputAdapterRuntime.publish(OutputAdapterRuntime.java:62)
at org.wso2.carbon.event.output.adapter.core.internal.CarbonOutputEventAdapterService.publish(CarbonOutputEventAdapterService.java:143)
at org.wso2.carbon.event.publisher.core.internal.EventPublisher.process(EventPublisher.java:414)
at org.wso2.carbon.event.publisher.core.internal.EventPublisher.sendEvent(EventPublisher.java:226)
at org.wso2.carbon.event.publisher.core.internal.EventPublisher.onEvent(EventPublisher.java:294)
at org.wso2.carbon.event.stream.core.internal.EventJunction.sendEvents(EventJunction.java:194)
at org.wso2.carbon.event.processor.core.internal.listener.SiddhiOutputStreamListener.receive(SiddhiOutputStreamListener.java:100)
at org.wso2.siddhi.core.stream.output.StreamCallback.receiveEvents(StreamCallback.java:98)
at org.wso2.siddhi.core.stream.output.StreamCallback.receive(StreamCallback.java:69)
at org.wso2.siddhi.core.stream.StreamJunction.sendEvent(StreamJunction.java:126)
at org.wso2.siddhi.core.stream.StreamJunction$Publisher.send(StreamJunction.java:323)
at org.wso2.siddhi.core.query.output.callback.InsertIntoStreamCallback.send(InsertIntoStreamCallback.java:46)
at org.wso2.siddhi.core.query.output.ratelimit.OutputRateLimiter.sendToCallBacks(OutputRateLimiter.java:78)
at org.wso2.siddhi.core.query.output.ratelimit.PassThroughOutputRateLimiter.process(PassThroughOutputRateLimiter.java:40)
at org.wso2.siddhi.core.query.selector.QuerySelector.processNoGroupBy(QuerySelector.java:123)
at org.wso2.siddhi.core.query.selector.QuerySelector.process(QuerySelector.java:86)
at org.wso2.siddhi.core.query.processor.filter.FilterProcessor.process(FilterProcessor.java:56)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.processAndClear(ProcessStreamReceiver.java:154)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.process(ProcessStreamReceiver.java:80)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.receive(ProcessStreamReceiver.java:150)
at org.wso2.siddhi.core.stream.StreamJunction.sendData(StreamJunction.java:214)
at org.wso2.siddhi.core.stream.StreamJunction.access$200(StreamJunction.java:46)
at org.wso2.siddhi.core.stream.StreamJunction$Publisher.send(StreamJunction.java:343)
at org.wso2.siddhi.core.stream.input.InputDistributor.send(InputDistributor.java:49)
at org.wso2.siddhi.core.stream.input.InputEntryValve.send(InputEntryValve.java:59)
at org.wso2.siddhi.core.stream.input.InputHandler.send(InputHandler.java:51)
at org.wso2.carbon.event.processor.core.internal.listener.SiddhiInputEventDispatcher.sendEvent(SiddhiInputEventDispatcher.java:39)
at org.wso2.carbon.event.processor.core.internal.listener.AbstractSiddhiInputEventDispatcher.consumeEvent(AbstractSiddhiInputEventDispatcher.java:104)
at org.wso2.carbon.event.stream.core.internal.EventJunction.sendEvents(EventJunction.java:183)
at org.wso2.carbon.event.processor.core.internal.listener.SiddhiOutputStreamListener.receive(SiddhiOutputStreamListener.java:100)
at org.wso2.siddhi.core.stream.output.StreamCallback.receiveEvents(StreamCallback.java:98)
at org.wso2.siddhi.core.stream.output.StreamCallback.receive(StreamCallback.java:69)
at org.wso2.siddhi.core.stream.StreamJunction.sendEvent(StreamJunction.java:126)
at org.wso2.siddhi.core.stream.StreamJunction$Publisher.send(StreamJunction.java:323)
at org.wso2.siddhi.core.query.output.callback.InsertIntoStreamCallback.send(InsertIntoStreamCallback.java:46)
at org.wso2.siddhi.core.query.output.ratelimit.OutputRateLimiter.sendToCallBacks(OutputRateLimiter.java:78)
at org.wso2.siddhi.core.query.output.ratelimit.PassThroughOutputRateLimiter.process(PassThroughOutputRateLimiter.java:40)
at org.wso2.siddhi.core.query.selector.QuerySelector.processNoGroupBy(QuerySelector.java:123)
at org.wso2.siddhi.core.query.selector.QuerySelector.process(QuerySelector.java:86)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.processAndClear(ProcessStreamReceiver.java:154)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.process(ProcessStreamReceiver.java:80)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.receive(ProcessStreamReceiver.java:102)
at org.wso2.siddhi.core.stream.StreamJunction.sendEvent(StreamJunction.java:126)
at org.wso2.siddhi.core.stream.StreamJunction$Publisher.send(StreamJunction.java:323)
at org.wso2.siddhi.core.query.output.callback.InsertIntoStreamCallback.send(InsertIntoStreamCallback.java:46)
at org.wso2.siddhi.core.query.output.ratelimit.OutputRateLimiter.sendToCallBacks(OutputRateLimiter.java:78)
at org.wso2.siddhi.core.query.output.ratelimit.PassThroughOutputRateLimiter.process(PassThroughOutputRateLimiter.java:40)
at org.wso2.siddhi.core.query.selector.QuerySelector.processNoGroupBy(QuerySelector.java:123)
at org.wso2.siddhi.core.query.selector.QuerySelector.process(QuerySelector.java:86)
at org.wso2.siddhi.core.query.input.stream.join.JoinProcessor.process(JoinProcessor.java:110)
at org.wso2.siddhi.core.query.processor.stream.window.LengthWindowProcessor.process(LengthWindowProcessor.java:86)
at org.wso2.siddhi.core.query.processor.stream.window.WindowProcessor.processEventChunk(WindowProcessor.java:57)
at org.wso2.siddhi.core.query.processor.stream.AbstractStreamProcessor.process(AbstractStreamProcessor.java:101)
at org.wso2.siddhi.core.query.input.stream.join.JoinProcessor.process(JoinProcessor.java:118)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.processAndClear(ProcessStreamReceiver.java:154)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.process(ProcessStreamReceiver.java:80)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.receive(ProcessStreamReceiver.java:102)
at org.wso2.siddhi.core.stream.StreamJunction.sendEvent(StreamJunction.java:126)
at org.wso2.siddhi.core.stream.StreamJunction$Publisher.send(StreamJunction.java:323)
at org.wso2.siddhi.core.query.output.callback.InsertIntoStreamCallback.send(InsertIntoStreamCallback.java:46)
at org.wso2.siddhi.core.query.output.ratelimit.OutputRateLimiter.sendToCallBacks(OutputRateLimiter.java:78)
at org.wso2.siddhi.core.query.output.ratelimit.PassThroughOutputRateLimiter.process(PassThroughOutputRateLimiter.java:40)
at org.wso2.siddhi.core.query.selector.QuerySelector.processNoGroupBy(QuerySelector.java:123)
at org.wso2.siddhi.core.query.selector.QuerySelector.process(QuerySelector.java:86)
at org.wso2.siddhi.core.query.processor.filter.FilterProcessor.process(FilterProcessor.java:56)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.processAndClear(ProcessStreamReceiver.java:154)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.process(ProcessStreamReceiver.java:80)
at org.wso2.siddhi.core.query.input.ProcessStreamReceiver.receive(ProcessStreamReceiver.java:150)
at org.wso2.siddhi.core.stream.StreamJunction.sendData(StreamJunction.java:214)
at org.wso2.siddhi.core.stream.StreamJunction.access$200(StreamJunction.java:46)
at org.wso2.siddhi.core.stream.StreamJunction$Publisher.send(StreamJunction.java:343)
at org.wso2.siddhi.core.stream.input.InputDistributor.send(InputDistributor.java:49)
at org.wso2.siddhi.core.stream.input.InputEntryValve.send(InputEntryValve.java:59)
at org.wso2.siddhi.core.stream.input.InputHandler.send(InputHandler.java:51)
at org.wso2.carbon.event.processor.core.internal.listener.SiddhiInputEventDispatcher.sendEvent(SiddhiInputEventDispatcher.java:39)
at org.wso2.carbon.event.processor.core.internal.listener.AbstractSiddhiInputEventDispatcher.consumeEvent(AbstractSiddhiInputEventDispatcher.java:104)
at org.wso2.carbon.event.stream.core.internal.EventJunction.sendEvent(EventJunction.java:146)
at org.wso2.carbon.event.receiver.core.internal.management.InputEventDispatcher.onEvent(InputEventDispatcher.java:27)
at org.wso2.carbon.event.receiver.core.internal.EventReceiver.sendEvent(EventReceiver.java:298)
at org.wso2.carbon.event.receiver.core.internal.EventReceiver.processMappedEvent(EventReceiver.java:222)
at org.wso2.carbon.event.receiver.core.internal.EventReceiver$MappedEventSubscription.onEvent(EventReceiver.java:355)
at org.wso2.carbon.event.input.adapter.core.internal.InputAdapterRuntime.onEvent(InputAdapterRuntime.java:110)
at org.wso2.carbon.event.input.adapter.jms.internal.util.JMSMessageListener.onMessage(JMSMessageListener.java:61)
at org.wso2.carbon.event.input.adapter.jms.internal.util.JMSTaskManager$MessageListenerTask.handleMessage(JMSTaskManager.java:643)
at org.wso2.carbon.event.input.adapter.jms.internal.util.JMSTaskManager$MessageListenerTask.run(JMSTaskManager.java:542)
at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
答案 0 :(得分：0)
由于发布程序的执行计划的高吞吐量以及关闭JMS连接的异步机制，WSO2 CEP引擎内的Active MQ JMS连接池无法跟上这些连接的打开和关闭。
这很快耗尽了所有可用的连接。独立于最大#set。
在我的案例中，解决方案是减少每单位时间发送的消息数量并累积结果。