From jonathan.gibbons at oracle.com  Fri Jul 28 19:09:57 2017
From: jonathan.gibbons at oracle.com (Jonathan Gibbons)
Date: Fri, 28 Jul 2017 12:09:57 -0700
Subject: jtreg 4.2 fcs b08 has been promoted
In-Reply-To: <1b2aded2-d0e8-2b4c-60c5-cc452731bcc7@oracle.com>
References: <1b2aded2-d0e8-2b4c-60c5-cc452731bcc7@oracle.com>
Message-ID: <597B8C05.5070903@oracle.com>

jtreg 4.2 b08 has just been promoted, and deserves a special note, since 
it contains
a latent incompatible change in undocumented behavior that has affected 
a few tests
in the various repos of a JDK forest.

Most folk should be unaffected by this change, and can reasonably ignore 
the following details.

The change is to isolate the compiled classes for the non-library 
classes for "traditional"
tests (i.e. any test using explicit action tags, like @build, @compile, 
@run main.
The change is to help eliminate some of the non-deterministic behavior 
we have seen
when running tests concurrently, when the tests are relying on implicit 
compilation,
(instead of using @build,) to compile additional classes required by the 
test.

The change means that there is an extra level of directory component in 
the path
to the test's classes, as seen in the "test.classes" property. For most 
tests, this change
is transparent and does not affect the test's execution. However, a 
small number
of JDK tests incorrectly assumed a relationship between the location of 
a test's classes
and the location of the classes for libraries used by the test. The 
correct way to
determine the location of a library's classes is to examine the 
test.class.path property.

To minimize the need to update tests, the new behavior is only enabled 
for test
suites that explicitly request the use of "jtreg 4.2 b08" or later, in 
the requiredVersion
property in TEST.ROOT.  The feature will not be enabled for test suites 
that request
the use of an earlier version of jtreg. I expect this to be the case for 
tests for all
versions of JDK prior to JDK 10.   Separately, all affected tests in JDK 
10 have already
been updated.

-- Jon




On 07/28/2017 11:35 AM, Abhijit Saha wrote:
> *** Oracle Proprietary/Confidential: For Internal Use Only ***
>
> The following build has been promoted:
>
> Origin           : RE
> Product          : jtreg 4.2
> Version          : fcs build b08
> Date             : Thursday, July 27, 2017 03:28:31 PM PDT
> Binaries         : /java/re/jtreg/4.2/promoted/fcs/b08/binaries
> Bundles          : /java/re/jtreg/4.2/promoted/fcs/b08/bundles
> Bundles URL      : 
> http://jre.us.oracle.com/java/re/jtreg/4.2/promoted/fcs/b08/bundles
> Workspace        : /java/re/jtreg/4.2/promoted/fcs/b08/ws
>
>