I support committing this patch, however I don't see an ICLA listed at [1]
for Alexios. Alexios, if you have not submitted an ICLA [2], please do so.

I would be happy to apply the patch (if Mehdi doesn't have the time).

[1] http://people.apache.org/committer-index.html#unlistedclas
[2] http://www.apache.org/licenses/icla.txt

On Tue, Feb 28, 2012 at 6:27 AM, Alexios Giotis <alex.gio...@gmail.com>wrote:

> Hi,
> About 6 months ago, I had a deadlock issue that regularly stopped
> production servers. While I was opening a bugzilla ticket, I found that
> this was already reported back in 2009. This issue is still opened as it
> was difficult to reproduce. On that issue, I added:
> [1] An explanation of why a deadlock is possible.
> [1] Stacktraces of deadlocked threads from a production server.
> [2] A small unit test that adds a Thread.sleep() to the PropertyCache to
> make it always reproducable.
> [3] A patch solving this issue.
> [4] Explanations of why the patch rewrites the existing PropertyCache
> class.
> This was then reviewed and unit tests were added [5]. On top of this, I
> have committed the fix in my private branch and it works well on several
> big production systems. This is as far as I can go before a FOP committer
> takes it further. I am writing this because:
> - Deadlocks should be fixed. When they occur, there is no way around them.
> - The trunk is moving, the patch is aging and it will be more difficult to
> apply it over time.
> - It is discouraging for submitting more patches.
> Alexios Giotis
> [1] https://issues.apache.org/bugzilla/show_bug.cgi?id=46962#c3
> [2] https://issues.apache.org/bugzilla/attachment.cgi?id=27342
> [3] https://issues.apache.org/bugzilla/attachment.cgi?id=27477&action=diff
> [4] https://issues.apache.org/bugzilla/show_bug.cgi?id=46962#c7
> [5] https://issues.apache.org/bugzilla/show_bug.cgi?id=46962#c9

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