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<p class="MsoNormal">We have a multithread java program running in JBOSS .. where each thread sends a message to the RABBIT MQ Exchange ..<o:p></o:p></p>
<p class="MsoNormal">We are using the Spring config file to make the connections / channels etc …<o:p></o:p></p>
<p class="MsoNormal">Currently we have <span style="font-size:10.0pt;font-family:Consolas;background:yellow;mso-highlight:yellow">
requestedChannelMax=1 ..</span><span style="font-size:10.0pt;font-family:Consolas"> Occasionally we see the below exception …
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas">The exception is mis leading and not sure if its because eof the channel availability …<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New"">2014-04-23 14:28:07,279 ERROR [DeviceOIDUpdateMBusTask] - com.att.dlife.dlcore.mbus.client.common.DLCoreMessageBusException: org.springframework.amqp.UncategorizedAmqpException:
java.lang.NullPointerException<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.support.RabbitExceptionTranslator.convertRabbitAccessException(RabbitExceptionTranslator.java:60)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.connection.RabbitAccessor.convertRabbitAccessException(RabbitAccessor.java:108)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:632)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.core.RabbitTemplate.send(RabbitTemplate.java:349)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.core.RabbitTemplate.send(RabbitTemplate.java:343)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at com.att.dlife.dlcore.mbus.client.publisher.AmqpMessageSenderImpl.send(AmqpMessageSenderImpl.java:71)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at com.xanboo.core.mbus.DeviceOIDUpdateMBusTask.run(DeviceOIDUpdateMBusTask.java:156)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at java.lang.Thread.run(Thread.java:662)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New"">Caused by: java.lang.NullPointerException<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at java.lang.reflect.Method.invoke(Method.java:597)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:348)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at $Proxy207.basicPublish(Unknown Source)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.core.RabbitTemplate.doSend(RabbitTemplate.java:675)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.core.RabbitTemplate$1.doInRabbit(RabbitTemplate.java:351)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:627)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> ... 7 more<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at com.att.dlife.dlcore.mbus.client.publisher.AmqpMessageSenderImpl.send(AmqpMessageSenderImpl.java:94)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at com.xanboo.core.mbus.DeviceOIDUpdateMBusTask.run(DeviceOIDUpdateMBusTask.java:156)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New""> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""> at java.lang.Thread.run(Thread.java:662)</span><o:p></o:p></p>
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