MQTT Connect Sampler show 500 error

[andyzhouh]

/home/test/桌面/jietu.png
打印消息如下：
2018/04/11 10:01:18 INFO - jmeter.engine.StandardJMeterEngine: Running the test!
2018/04/11 10:01:18 INFO - jmeter.samplers.SampleEvent: List of sample_variables: []
2018/04/11 10:01:18 INFO - net.xmeter.samplers.ConnectionSampler: *** Keeptime is: 1800
2018/04/11 10:01:18 INFO - jmeter.gui.util.JMeterMenuBar: setRunning(true,local)
2018/04/11 10:01:18 INFO - jmeter.engine.StandardJMeterEngine: Starting ThreadGroup: 1 : 线程组
2018/04/11 10:01:18 INFO - jmeter.engine.StandardJMeterEngine: Starting 1 threads for group 线程组.
2018/04/11 10:01:18 INFO - jmeter.engine.StandardJMeterEngine: Thread will continue on error
2018/04/11 10:01:18 INFO - jmeter.threads.ThreadGroup: Starting thread group number 1 threads 1 ramp-up 1 perThread 1000.0 delayedStart=false
2018/04/11 10:01:18 INFO - jmeter.threads.ThreadGroup: Started thread group number 1
2018/04/11 10:01:18 INFO - jmeter.engine.StandardJMeterEngine: All thread groups have been started
2018/04/11 10:01:18 INFO - jmeter.threads.JMeterThread: Thread started: 线程组 1-1
2018/04/11 10:01:18 ERROR - net.xmeter.samplers.ConnectionSampler: String index out of range: -10 java.lang.StringIndexOutOfBoundsException: String index out of range: -10
at java.lang.String.substring(String.java:1911)
at net.xmeter.Util.generateClientId(Util.java:34)
at net.xmeter.samplers.ConnectionSampler.sample(ConnectionSampler.java:62)
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:465)
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:410)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:241)
at java.lang.Thread.run(Thread.java:748)

2018/04/11 10:01:18 ERROR - jmeter.samplers.SampleResult: setEndTime must be called after setStartTime java.lang.Throwable: Invalid call sequence
at org.apache.jmeter.samplers.SampleResult.setEndTime(SampleResult.java:1046)
at org.apache.jmeter.samplers.SampleResult.sampleEnd(SampleResult.java:1085)
at net.xmeter.samplers.ConnectionSampler.sample(ConnectionSampler.java:93)
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:465)
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:410)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:241)
at java.lang.Thread.run(Thread.java:748)

2018/04/11 10:01:18 INFO - net.xmeter.samplers.ConnectionSampler: Created the sampler results, will sleep current thread for 1800 sceconds
2018/04/11 10:01:18 INFO - net.xmeter.samplers.ConnectionSampler: Connection is null.
2018/04/11 10:01:18 INFO - jmeter.threads.JMeterThread: Thread is done: 线程组 1-1
2018/04/11 10:01:18 INFO - jmeter.threads.JMeterThread: Thread finished: 线程组 1-1
2018/04/11 10:01:18 INFO - jmeter.engine.StandardJMeterEngine: Notifying test listeners of end of test
2018/04/11 10:01:18 INFO - net.xmeter.samplers.ConnectionSampler: in testEnded, isNonGUI=false, sleepFlag=false
2018/04/11 10:01:18 INFO - jmeter.gui.util.JMeterMenuBar: setRunning(false,local)

[falalawang]

此错误由于ClinetId过长导致，此插件设定的最大的ClientId长度为23。

[andyzhouh]

好的，我把clientid长度改为23位以内了，已经没有报这个错误了，但是又出现了新的错误，错误信息如下：
2018/04/11 12:28:28 INFO - jmeter.engine.StandardJMeterEngine: Running the test!
2018/04/11 12:28:28 INFO - jmeter.samplers.SampleEvent: List of sample_variables: []
2018/04/11 12:28:28 INFO - jmeter.gui.util.JMeterMenuBar: setRunning(true,local)
2018/04/11 12:28:28 INFO - jmeter.engine.StandardJMeterEngine: Starting ThreadGroup: 1 : Ïß³Ì×é
2018/04/11 12:28:28 INFO - jmeter.engine.StandardJMeterEngine: Starting 1 threads for group Ïß³Ì×é.
2018/04/11 12:28:28 INFO - jmeter.engine.StandardJMeterEngine: Thread will continue on error
2018/04/11 12:28:28 INFO - jmeter.threads.ThreadGroup: Starting thread group number 1 threads 1 ramp-up 1 perThread 1000.0 delayedStart=false
2018/04/11 12:28:28 INFO - jmeter.threads.ThreadGroup: Started thread group number 1
2018/04/11 12:28:28 INFO - jmeter.engine.StandardJMeterEngine: All thread groups have been started
2018/04/11 12:28:28 INFO - jmeter.threads.JMeterThread: Thread started: Ïß³Ì×é 1-1
2018/04/11 12:28:29 INFO - net.xmeter.samplers.ConnectionCallback: The connection org.fusesource.mqtt.client.CallbackConnection@16e612cfhawtdispatch-DEFAULT-2 is established successfully.
2018/04/11 12:28:29 ERROR - jmeter.threads.JMeterThread: Test failed! java.lang.NoSuchMethodError: org.apache.jmeter.samplers.SampleResult.setSentBytes(J)V
at net.xmeter.samplers.PubSampler.sample(PubSampler.java:227)
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:465)
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:410)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:241)
at java.lang.Thread.run(Thread.java:748)

2018/04/11 12:28:29 INFO - jmeter.threads.JMeterThread: Thread finished: Ïß³Ì×é 1-1
2018/04/11 12:28:29 INFO - jmeter.engine.StandardJMeterEngine: Notifying test listeners of end of test
2018/04/11 12:28:29 INFO - jmeter.gui.util.JMeterMenuBar: setRunning(false,local)
2018/04/11 12:28:29 INFO - net.xmeter.samplers.PubSampler: The connection org.fusesource.mqtt.client.CallbackConnection@16e612cf disconneted successfully.

2.为什么结果树下没有对应的MQTT Pub Sampler对应的信息，如下：

[falalawang]

Hi Andy,

第一个错误是由于Jmeter3.0版本低，内部方法不兼容造成的。我们建议您使用JMeter3.2或3.3版本。 后续我们会更新对JMeter版本限制的说明。
第二个错误是由于第一个错误抛出异常后，写sampler result失败导致从结果树中看不到结果。更换JMeter版本后问题就可以解决。

Thanks

[andyzhouh]

感谢，我试一下Jmeter更高的版本。

[andyzhouh]

用jmeter2.0的版本，可以正常发布消息。

[falalawang]

好的，现在的v1.0版本的MQTT是基于ApacheJMeter_core v3.1 编译的，所以如果用比较老的jmeter版本执行可能会出现一些问题，所以还是建议使用JMeter 3.1以上版本比较保险。