Bug 4715154

Sean Mullan sean.mullan at oracle.com
Mon Jun 27 15:57:33 UTC 2011

Hey Alan,

Would it be a good idea if we add this Windows limitation to the NIO javadocs 
somewhere, say in the FileChannel class? I spent a lot of time chasing this down 
until I finally figured out it was a known issue.


On 6/27/11 9:19 AM, Alan Bateman wrote:
> Sean Mullan wrote:
>> Several jigsaw unit tests are failing on Windows because of bug 4715154 [1]
>> which was closed a long time ago as "Will Not Fix". Does anyone have any
>> suggestions as the best way to workaround this, short of replacing the call to
>> FileChannel.map with FileChannel.read? Are there any plans to fix this in the
>> future?
>> Thanks,
>> Sean
>> [1] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4715154
> This is a limitation of Windows and I'm not aware of any way to create a
> file-mapping that would allow the file be deleted while the mapping exists (if
> there is a way then it would be great to know about it). In a couple of tests
> we've had to do an ugly System.gc() + short sleep at the end of the test to
> trigger the unmap.
> -Alan

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