Am 26.04.2015 um 11:17 schrieb Sergio Boso:
Hi everybody,

in a rather large test environment, I'm facing the following error:

2015/04/24 16:44:47 ERROR - jmeter.samplers.SampleResult: sampleEnd called twice java.lang.Throwable: Invalid call sequence at org.apache.jmeter.samplers.SampleResult.sampleEnd(SampleResult.java:1064) at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:421)
This is in a catch-Block when a RuntimeException was thrown. It will try to set the sample endtime, which can be set previously in line 355.

The exception would be logged one line later in line 422, but we will of course not get there. So the first thing I will do, is to swap the log line and the sample end call. That way you should be able to see the reason for the RuntimeException.

If you want to try the patch yourself, I will (try to) attach it to this mail.

After that I will try to fix the double setting of the sample end.

Regards
 Felix

at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:74) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1146) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1135) at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:434)
    at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:261)
    at java.lang.Thread.run(Unknown Source)

in the sample result field, I get the following message:
    Non HTTP response code: java.lang.IllegalArgumentException

_Environment information:_
- Jmeter 2.13, r1665067
- distributed environment, 4 slaves, with Windows 2012: the error is evenly distributed
- the master just harvests results, non GUI mode
- JVM:
    java version "1.7.0_55"
    Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
    Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

Other info:

 *      this does *not* happen when running a single thread
 *      this happens only on a specific sampler, error rate is around 10%
* the sampler is a pretty simple HTTPS GET operation, Http4 client implementation * I also get several other errors, like 503 and connection exception: global error rate is around 1%

The last info brings me to guess that this is induced by a server-side error, however I cannot guess what is going on. Unfortunately, the test is reserved and I cannot share the script and login information.

Any though? suggestions? other possible tests to do?

Thank you in advance, best regards

Sergio


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diff --git a/src/protocol/http/org/apache/jmeter/protocol/http/sampler/HTTPHC4Impl.java b/src/protocol/http/org/apache/jmeter/protocol/http/sampler/HTTPHC4Impl.java
index 19199ed..91c51c2 100644
--- a/src/protocol/http/org/apache/jmeter/protocol/http/sampler/HTTPHC4Impl.java
+++ b/src/protocol/http/org/apache/jmeter/protocol/http/sampler/HTTPHC4Impl.java
@@ -411,15 +411,15 @@ public class HTTPHC4Impl extends HTTPHCAbstractImpl {
             res = resultProcessing(areFollowingRedirect, frameDepth, res);
 
         } catch (IOException e) {
-            res.sampleEnd();
             log.debug("IOException", e);
-           // pick up headers if failed to execute the request
+            res.sampleEnd();
+            // pick up headers if failed to execute the request
             res.setRequestHeaders(getConnectionHeaders((HttpRequest) localContext.getAttribute(ExecutionContext.HTTP_REQUEST)));
             errorResult(e, res);
             return res;
         } catch (RuntimeException e) {
-            res.sampleEnd();
             log.debug("RuntimeException", e);
+            res.sampleEnd();
             errorResult(e, res);
             return res;
         } finally {

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