[jboss-jira] [JBoss JIRA] (WFCORE-3203) WildFlyTestRunner throws NullPointerException during stop intermittently

[Josef Cacek (JIRA)]

    [ https://issues.jboss.org/browse/WFCORE-3203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13453039#comment-13453039 ] 

Josef Cacek edited comment on WFCORE-3203 at 8/23/17 8:33 AM:
--------------------------------------------------------------

I was hunting another issue so I did:
{code:bash}
cd testsuite/elytron
i=1; while mvn clean test -Dipv6 -Dcheckstyle.skip -Denforcer.skip -DtestLogToFile=false > /tmp/core-test.log; do echo "Run $((i++)) finished with success"; done;
{code}

And the output was:
{noformat}
Run 1 finished with success
Run 2 finished with success
Exception in thread "Thread-5" java.lang.NullPointerException
	at org.wildfly.core.testrunner.Server.lambda$stop$0(Server.java:205)
	at java.lang.Thread.run(Thread.java:748)
Run 3 finished with success
Run 4 finished with success
Run 5 finished with success
Run 6 finished with success
Run 7 finished with success
Run 8 finished with success
Run 9 finished with success
Run 10 finished with success
Run 11 finished with success
Run 12 finished with success
Run 13 finished with success
Run 14 finished with success
Run 15 finished with success
Run 16 finished with success
Run 17 finished with success
Run 18 finished with success
Run 19 finished with success
Run 20 finished with success
Run 21 finished with success
Run 22 finished with success
Run 23 finished with success
Run 24 finished with success
Run 25 finished with success
Run 26 finished with success
Run 27 finished with success
Run 28 finished with success
Run 29 finished with success
Run 30 finished with success
Run 31 finished with success
Run 32 finished with success
Run 33 finished with success
Run 34 finished with success
Run 35 finished with success
Run 36 finished with success
Run 37 finished with success
Run 38 finished with success
Run 39 finished with success
Run 40 finished with success
Run 41 finished with success
Run 42 finished with success
Run 43 finished with success
Run 44 finished with success
Run 45 finished with success
Run 46 finished with success
Run 47 finished with success
Exception in thread "Thread-5" java.lang.NullPointerException
	at org.wildfly.core.testrunner.Server.lambda$stop$0(Server.java:205)
	at java.lang.Thread.run(Thread.java:748)
Run 48 finished with success
Run 49 finished with success
Run 50 finished with success
Run 51 finished with success
Run 52 finished with success
Run 53 finished with success
Run 54 finished with success
Run 55 finished with success
Run 56 finished with success
Run 57 finished with success
Run 58 finished with success
Fail
{noformat}

Updated: in my original command was {{-Dipv6}} used.


was (Author: jcacek):
I was hunting another issue so I did:
{code:bash}
cd testsuite/elytron
i=1; while mvn clean test -Dcheckstyle.skip -Denforcer.skip -DtestLogToFile=false > /tmp/core-test.log; do echo "Run $((i++)) finished with success"; done;
{code}

And the output was:
{noformat}
Run 1 finished with success
Run 2 finished with success
Exception in thread "Thread-5" java.lang.NullPointerException
	at org.wildfly.core.testrunner.Server.lambda$stop$0(Server.java:205)
	at java.lang.Thread.run(Thread.java:748)
Run 3 finished with success
Run 4 finished with success
Run 5 finished with success
Run 6 finished with success
Run 7 finished with success
Run 8 finished with success
Run 9 finished with success
Run 10 finished with success
Run 11 finished with success
Run 12 finished with success
Run 13 finished with success
Run 14 finished with success
Run 15 finished with success
Run 16 finished with success
Run 17 finished with success
Run 18 finished with success
Run 19 finished with success
Run 20 finished with success
Run 21 finished with success
Run 22 finished with success
Run 23 finished with success
Run 24 finished with success
Run 25 finished with success
Run 26 finished with success
Run 27 finished with success
Run 28 finished with success
Run 29 finished with success
Run 30 finished with success
Run 31 finished with success
Run 32 finished with success
Run 33 finished with success
Run 34 finished with success
Run 35 finished with success
Run 36 finished with success
Run 37 finished with success
Run 38 finished with success
Run 39 finished with success
Run 40 finished with success
Run 41 finished with success
Run 42 finished with success
Run 43 finished with success
Run 44 finished with success
Run 45 finished with success
Run 46 finished with success
Run 47 finished with success
Exception in thread "Thread-5" java.lang.NullPointerException
	at org.wildfly.core.testrunner.Server.lambda$stop$0(Server.java:205)
	at java.lang.Thread.run(Thread.java:748)
Run 48 finished with success
Run 49 finished with success
Run 50 finished with success
Run 51 finished with success
Run 52 finished with success
Run 53 finished with success
Run 54 finished with success
Run 55 finished with success
Run 56 finished with success
Run 57 finished with success
Run 58 finished with success
Fail
{noformat}

> WildFlyTestRunner throws NullPointerException during stop intermittently
> ------------------------------------------------------------------------
>
>                 Key: WFCORE-3203
>                 URL: https://issues.jboss.org/browse/WFCORE-3203
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: Test Suite
>            Reporter: Josef Cacek
>            Assignee: Tomaz Cerar
>
> There seems to be a synchronization issue in the WildFly TestRunner ({{Server}} class) in the wildfly-core testuite.
> I'm getting a {{NullPointerException}} intermittently during server stop:
> {noformat}
> Exception in thread "Thread-5" java.lang.NullPointerException
> 	at org.wildfly.core.testrunner.Server.lambda$stop$0(Server.java:205)
> 	at java.lang.Thread.run(Thread.java:748)
> {noformat}
> This is a testsuite issue which doesn't affect the test results themselves. Nevertheless it would be better to have clean runs without NPEs.



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