https://issues.apache.org/bugzilla/show_bug.cgi?id=49734
Summary: Null pointer exception on stop Threads command
(Run>Stop)
Product: JMeter
Version: 2.4
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: major
Priority: P2
Component: Main
AssignedTo: [email protected]
ReportedBy: [email protected]
Some times when asking jmeter to stop a running thread group a null pointer
exception is thrown and the window saying "Stopping Threads" remains displayed.
The exception is:
Exception in thread "Thread-357" java.lang.NullPointerException
at
org.apache.jmeter.engine.StandardJMeterEngine.tellThreadsToStop(StandardJMeterEngine.java:542)
at
org.apache.jmeter.engine.StandardJMeterEngine.access$700(StandardJMeterEngine.java:57)
at
org.apache.jmeter.engine.StandardJMeterEngine$StopTest.run(StandardJMeterEngine.java:357)
at java.lang.Thread.run(Unknown Source)
It seams a null check on the Thread object retreived should be done in this
method:
private void tellThreadsToStop() {
synchronized (allThreads) { // Protect iterator
Iterator<JMeterThread> iter = new
HashSet<JMeterThread>(allThreads.keySet()).iterator();
while (iter.hasNext()) {
JMeterThread item = iter.next();
item.stop(); // set stop flag
item.interrupt(); // interrupt sampler if possible
Thread t = allThreads.get(item);
t.interrupt(); // also interrupt JVM thread // <--
Line 542
}
}
}
Regards,
Stephane
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