RFR 8258945: test/jdk/tools/jlink/JLinkReproducibleTest.java fails randomly when cds is disabled

[hedongbo]

Thanks Christoph!

Glad to hear the news and look forward to you can post a PR ASAP.


Thanks,
dongbohe

-----Original Message-----
From: Langer, Christoph [mailto:christoph.langer at sap.com] 
Sent: Friday, January 15, 2021 1:15 AM
To: hedongbo <hedongbo at huawei.com>; jdk-updates-dev at openjdk.java.net
Subject: RE: RFR 8258945: test/jdk/tools/jlink/JLinkReproducibleTest.java fails randomly when cds is disabled

Hi dongbohe,

we also see this issue in our nightly testing and are interested in fixing this.

However, backporting https://bugs.openjdk.java.net/browse/JDK-8202951 doesn't seem appropriate for backporting to 11u to me. Don't know if other people would have a different opinion - if so, please chime in.

We should find a different solution, maybe we can exclude the test from running when CDS is disabled by some jtreg directive?

Thanks
Christoph

> -----Original Message-----
> From: jdk-updates-dev <jdk-updates-dev-retn at openjdk.java.net> On 
> Behalf Of hedongbo
> Sent: Donnerstag, 14. Januar 2021 02:54
> To: jdk-updates-dev at openjdk.java.net
> Subject: RFR 8258945: test/jdk/tools/jlink/JLinkReproducibleTest.java 
> fails randomly when cds is disabled
> 
> Hi,
> Can someone help me look at this problem?
> 
> BugID: http://bugs.openjdk.java.net/browse/JDK-8258945
> 
> As analyzed in JDK-8258945, this is caused by the fact that the object 
> hashcode of enum may be different in different JVMs. It is not a good 
> idea to modify the calculation of the hashcode of the 
> ModuleDescriptor, and it is also difficult.  Therefore, I think we can 
> backport JDK- 
> 8202951<https://bugs.openjdk.java.net/browse/JDK-8202951> to jdk11 to workarounds.
> 
> Any suggestions? If backport is needed, I will start this work.
> 
> 
> 
> Thanks,
> dongbohe