Thoughts on possible options to JDK-8027598

Rajan Halade rajan.halade at
Wed Nov 27 13:43:28 PST 2013

On 11/27/2013 12:47, Bradford Wetmore wrote:
> > jtreg team? I am not aware of one. Jon Gibbons works on this in his
> > spare time.
> I would call him "the JTREG team."
> Was there an ETA for this?  Balancing recent test stabilization 
> efforts with this, you may consider consider adding othervm and then 
> back it out when the JTREG fix is made.
I am discussing this with Jon and will soon update with summary of it. I 
am also working on adding /othervm to affected tests.

- Rajan
> Brad
> On 11/25/2013 2:29 AM, Chris Hegarty wrote:
>> On 22/11/13 21:11, Rajan Halade wrote:
>>> On 11/22/2013 11:42, Sean Mullan wrote:
>>>> On 11/21/2013 04:53 AM, Chris Hegarty wrote:
>>>>>>>> If I am correct, JTREG has support provider cleanup already. 
>>>>>>>> But the
>>>>>>>> question is even JTREG reset the providers, it still cannot ensure
>>>>>>>> next
>>>>>>>> test won't be impacted because in some circumstances JDK may 
>>>>>>>> need to
>>>>>>>> cache something which depends on previous providers. Still need to
>>>>>>>> analysis the test case by case.
>>>>>>> Right, any static or cached data may be invalid, and this will
>>>>>>> require
>>>>>>> careful changes to the JRE itself.
>>>>>> Pardon my ignorance - if I gather correctly then ProvidersSnapshot
>>>>>> library also doesn't sandbox effects completely.
>>>>> FYI. I am not part of the security team, and someone from the 
>>>>> security
>>>>> group should ultimately have to agree/disagree, but we have similar
>>>>> issues in other parts of the platform. I don't know the specifics of
>>>>> the
>>>>> code here so it may, or may not, be an issue.
>>>>> If any part of the security framework stores values in static fields,
>>>>> that is dependent on the security providers, then when the providers
>>>>> change this static value may be incorrect.
>>>>> We encounter this from time to time with system properties. E.g. JDK
>>>>> HTTP Client code reads system property and stores in static field, 
>>>>> JDK
>>>>> HTTP Client will never never re-read the property as it believes it
>>>>> will
>>>>> not change. Having jtreg reset/clean certain system properties 
>>>>> will not
>>>>> help in this case.
>>>> Yes, the example with system properties is a good one.
>>>> However, providers are designed to be added and removed dynamically
>>>> (see the API), so if there is some static
>>>> information not being cleared when providers are reset, I would tend
>>>> to think it may be a bug in the JDK.
>> OK, if this is the case then that is fine.
>>> yes. thanks!
>>>> My preference would be change jtreg to clear/restore providers, and
>>>> more thoroughly analyze any subsequent test failures as it may be a
>>>> bug in the JDK.
>>> Ok, I will follow up with jtreg team to find out when they can 
>>> commit to
>>> timeline.
>> jtreg team? I am not aware of one. Jon Gibbons works on this in his
>> spare time.  You may want to take a look at jtreg [1] in the code tools
>> project.
>> -Chris.
>> [1]
>>> - Rajan
>>>> --Sean

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