[jira] Commented: (DERBY-1694) derbynet/testProperties.java hangs

["Sunitha Kambhampati (JIRA)" <de...@db.apache.org>]

    [ http://issues.apache.org/jira/browse/DERBY-1694?page=comments#action_12435629 ] 
            
Sunitha Kambhampati commented on DERBY-1694:
--------------------------------------------

Thanks Mike for looking at the derby1694.p2.diff.txt.  Yes, I would like this patch to be committed. 

> derbynet/testProperties.java hangs
> ----------------------------------
>
>                 Key: DERBY-1694
>                 URL: http://issues.apache.org/jira/browse/DERBY-1694
>             Project: Derby
>          Issue Type: Bug
>          Components: Regression Test Failure
>    Affects Versions: 10.3.0.0
>         Environment: Windows XP  IBM 142 JRE
>            Reporter: Daniel John Debrunner
>             Fix For: 10.2.1.0
>
>         Attachments: derby1694.p2.diff.txt, derby1694.p2.stat.txt, derby1694diff.txt
>
>
> The testProperties.execCmd() is used to fork a JVM and not handle its
> streams. This will cause problems, as indicated by the javadoc for Process.
> "The parent process uses these streams to feed input to and get output
> from the subprocess. Because some native platforms only provide limited
> buffer size for standard input and output streams, failure to promptly
> write the input stream or read the output stream of the subprocess may
> cause the subprocess to block, and even deadlock"

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