[infinispan-dev] Hanging testsuite / bug in TestNG?

[Adrian Nistor]

The entire System.out and System.err is redirected. I don't want to 
think what this means in the context of concurrent test execution...

On 06/26/2012 11:32 PM, Sanne Grinovero wrote:
> Thanks Adrian,
> Is the log4j console appender being redirected by surefire?
>
> On 26 June 2012 21:21, Adrian Nistor <anistor at redhat.com> wrote:
>> Hi Sanne,
>>
>> I know the explanation was a bit laconic so I'll try to expand it a bit.
>> surefire has a buffer (a List actually) were console output is
>> accumulated during each test.
>> The list is synchronized so multiple threads writing to console is not
>> causing List corruption.
>> There is a very sensitive moment though at the end of the test when this
>> List of text lines is consolidated into a StringBuffer that is added to
>> the test report. Unfortunately during consolidation the List is accessed
>> without proper synchronization and if some stray thread outlives the
>> test and continues to generate output or we run multiple tests
>> concurrently - this will most likely cause a
>> ConcurrentModificationException.  Of course this problem is avoided if
>> you disable logging to console :). Actually not entirely avoided, but
>> minimized, because some tests also write to console directly using
>> System.out.println() and that can still trigger the issue.
>>
>> Adrian
>>
>> On 06/26/2012 07:33 PM, Sanne Grinovero wrote:
>>> On 26 June 2012 16:55, Adrian Nistor <anistor at redhat.com> wrote:
>>>> It doesn't know or care about it. But by disabling log4j console appender
>>>> you minimize the amount of text written to console and the risk to trigger
>>>> the surefire-report bug.
>>> because it returns quicker?
>>
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