We're running into the same issue. Job hangs while compiling the test reports. We finally stopped the build after about 3.5 hours of waiting and got the NPE as well.

I see the new test cases have been created, but no new cycle or execution statuses were added to them.

[ZapiTestResultReporter] [INFO] Examining test results...
11:55:33 Build result is UNSTABLE
11:55:33 Total Test Cases : 498ERROR: Build step failed with exception
15:30:00 java.lang.NullPointerException
15:30:00 at com.thed.zephyr.jenkins.utils.rest.TestCaseUtil.assignTests(TestCaseUtil.java:218)
15:30:00 at com.thed.zephyr.jenkins.utils.rest.TestCaseUtil.processTestCaseDetails(TestCaseUtil.java:413)
15:30:00 at com.thed.zephyr.jenkins.reporter.ZfjReporter.perform(ZfjReporter.java:98)
15:30:00 at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
15:30:00 at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:785)
15:30:00 at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:726)
15:30:00 at hudson.model.Build$BuildExecution.post2(Build.java:185)
15:30:00 at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:671)
15:30:00 at hudson.model.Run.execute(Run.java:1766)
15:30:00 at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
15:30:00 at hudson.model.ResourceController.execute(ResourceController.java:98)
15:30:00 at hudson.model.Executor.run(Executor.java:410)
15:30:00 Build step 'Publish test result to Zephyr for JIRA' marked build as failure

Jenkins v1.637
Zephyr v1.3
Jira v6.3.15

same issue here please help :
JIRA Core 7.1.7
zephyr for Jira : 3.2.1.32102629
ZAPI : 2.2.0.22002611
Jenskin : 2.14
Zephyr for JIRA Test Management plugin : 1.3

java.lang.NullPointerException
at com.thed.zephyr.jenkins.utils.rest.TestCaseUtil.assignTests(TestCaseUtil.java:218)
at com.thed.zephyr.jenkins.utils.rest.TestCaseUtil.processTestCaseDetails(TestCaseUtil.java:413)
at com.thed.zephyr.jenkins.reporter.ZfjReporter.perform(ZfjReporter.java:98)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:720)
at hudson.model.Build$BuildExecution.post2(Build.java:185)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:665)
at hudson.model.Run.execute(Run.java:1745)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:404)
Build step 'Publish test result to Zephyr for JIRA' marked build as failure

We are trying to evaluate Zephyr along with Jira, and this plugin as stated above keeps hanging in Jenkins. I looked at the actual jenkins log and it appears a rest end point it's trying to get to is invalid. It actually did create the test cases, but then failed with a 404 when trying to upload the results:

INFO: Test-Automation #12 main build action completed: SUCCESS
org.apache.http.client.ClientProtocolException: Unexpected response status: 404
at com.thed.zephyr.jenkins.utils.rest.Cycle.createCycle(Cycle.java:117)
at com.thed.zephyr.jenkins.utils.rest.TestCaseUtil.processTestCaseDetails(TestCaseUtil.java:385)
at com.thed.zephyr.jenkins.reporter.ZfjReporter.perform(ZfjReporter.java:98)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:720)
at hudson.model.Build$BuildExecution.post2(Build.java:185)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:665)
at hudson.model.Run.execute(Run.java:1766)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:410)

Zephyr for JIRA Jenkins plugin version: 1.3
Zephyr Version on JIra server: Zephyr for JIRA Cloud 1.0.12-AC
JIra version: No idea, it's cloud based and latest version.
Jenkins Server version: 2.7.1

Hi..

I might be late to this discussion but this issue can be resolved by installing the ZAPI plugin in JIRA. The plugin allows for programmatic access to test data via REST APIs. This needs to be in JIRA for jenkins to be able to post the test results

I've looked at the source code this is a bug. Even if you don't have the plugin configured correctly it shouldn't hang the job. Basically they aren't consuming the http client response when there's an error, so it just hangs. This also requires you to be on a stand alone instance of Jira and not the cloud version. Still shouldn't hang however.

Hi Sultan Maiyaki, Could you please suggest me, which version of ZAPI plugin is best/suitable for this, I will request to our corresponding personnel to buy ZAPI plugin,
Thanks in Advance.

Hi Lokman.

You should install the latest version of Zapi that is compatible with your version of JIRA. You can check the version matrix on this page

Best Regards

Hi..I am using:

JIRA 7.3.8

Zephyr for JIRA 3.5.1

ZAPI for JIRA 2.5.0

Zephyr Jenkins plugin 1.4

but still getting the same error with NullPointerException. Any ideas if the problem is a compatibility issue?

Thank you.