RFR: JDK-8223322: Improve concurrency in jpackage instances

[Andy Herrick]

On Fri, 18 Dec 2020 14:59:06 GMT, Andy Herrick <herrick at openjdk.org> wrote:

>> I'd propose to update the test to run more that two concurrent instance of jpackage command.
>
>> 
>> 
>> I'd propose to update the test to run more that two concurrent instance of jpackage command.
> 
> yes - I'm planning for a lot more in next revision, your suggestion to use only PackageTest.Action.CREATE will go a long way to making that possible, but I have had problems with test infrastructure fixing the workDir based on test class and method, and then getting IOExceptions as various PackageTest's try to write the same content to the same work dir.  I need to create infrastructure to allow each PackageTest to operate on separate workDir.

Reverting this PR to DRAFT while the above suggestions are implemented.

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PR: https://git.openjdk.java.net/jdk/pull/1829