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https://issues.apache.org/jira/browse/EXEC-41?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12769184#action_12769184
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Konrad Windszus commented on EXEC-41:
-------------------------------------

Especially the bugfix for DefaultExecuteHandler.setExitValues should be applied 
soon, since this bug prevents disabling of exit value checking with giving null 
as parameter.

> Patch to enable executing thread to return immediately when process is 
> "killed" by a watchdog
> ---------------------------------------------------------------------------------------------
>
>                 Key: EXEC-41
>                 URL: https://issues.apache.org/jira/browse/EXEC-41
>             Project: Commons Exec
>          Issue Type: Improvement
>    Affects Versions: 1.0, 1.1
>         Environment: Windows XP
>            Reporter: Ernest Mishkin
>            Assignee: Siegfried Goeschl
>            Priority: Minor
>             Fix For: 1.1
>
>         Attachments: commons-exec.patch
>
>
> This has been discussed on the commons-users mailing list. The patch intends 
> to solve the following problem:
> when a process runs longer than allowed by a configured watchdog's timeout, 
> the watchdog tries to destroy it and then DefaultExecutor tries to clean up 
> by joining with all installed pump stream threads. Problem is, that sometimes 
> the native process doesn't die and thus streams aren't closed and the stream 
> threads do not complete.
> The patch provides setAlwaysWaitForStreamThreads(boolean) method in 
> PumpStreamHandler. By default, alwaysWaitForStreamThreads is set to true to 
> preserve the current behavior. If set to false, and process is killed by 
> watchdog, DefaultExecutor's call into ErrorStreamHandler.stop will NOT join 
> the stream threads and DefaultExecutor will NOT attempt to close the streams, 
> so the executor's thread won't get stuck.
> Additionally, this patch fixes a small but annoying bug in 
> DefaultExecuteHandler.setExitValues(int[])

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