[jira] Commented: (MEXEC-15) exec:java plugin never shuts down

    [ 
http://jira.codehaus.org/browse/MEXEC-15?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_86333
 ] 

David Smiley commented on MEXEC-15:
-----------------------------------

1.  Why do we need a time out with non-daemon threads if the behavior is 
consistent with the command line?  I can't see the code; you didn't check it 
in, but I imagine that java on the command line would also "hang" since the 
non-daemon thread decided to stick around.  I wouldn't call that a hang, it's 
expected behavior.  BTW, AFAIK, if the java.util.Timer has no more tasks 
scheduled for the future then it'll shut itself down.

2. Yes, the code I submitted should allow for that.  stop() is optional.  In 
this case, those stubborn threads would live on as exec:java finishes and maven 
goes off to do other things (if any).  The VM would finally stop, aborting 
those daemon threads.  I don't have a testcase for this scenario; it'd be 
tricky.

> exec:java plugin never shuts down
> ---------------------------------
>
>                 Key: MEXEC-15
>                 URL: http://jira.codehaus.org/browse/MEXEC-15
>             Project: Mojo Exec Plugin
>          Issue Type: Bug
>    Affects Versions: 1.1
>            Reporter: Ryan Sonnek
>            Priority: Critical
>         Attachments: dsmiley-MEXEC-15.patch
>
>
> I've debugged that my main method has finished running, but the exec:java 
> plugin never exits.  Here's the last output I see before it hangs 
> indeffinately.
> T10 2007-01-15 10:34:59.959 
> com.digitalriver.logging.BatchPersistentRecordHandler <FINE> Persisting 1 
> LogRecords
> [DEBUG] interrupting thread 
> Thread[Thread-1,1,com.digitalriver.schedule.JobRunner]
> [DEBUG] joining on thread 
> Thread[Thread-1,1,com.digitalriver.schedule.JobRunner]
> My plugin configuration is pretty simple:
>       <!-- support exec:java to run application -->
>       <plugin>
>         <groupId>org.codehaus.mojo</groupId>
>         <artifactId>exec-maven-plugin</artifactId>
>         <configuration>
>                 <systemProperties>
>                       <systemProperty>
>               <key>com.digitalriver.system.configName</key>
>               <value>client</value>
>                       </systemProperty>
>                       <systemProperty>
>               <key>com.digitalriver.system.home</key>
>               <value>${runtimeRoot}</value>
>                       </systemProperty>
>                 </systemProperties>
>           <mainClass>com.digitalriver.schedule.JobRunner</mainClass>
>           <keepAlive>false</keepAlive>
>         </configuration>
>       </plugin>

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