Bug in parallel cache rebuild protection 5.2.0-B2

[Alexander Obuhovich]

We've implemented parallel cache rebuild protection in 5.2.0-B1 by setting lock before creating new cache. This ensured that all other requests were receiving old cache version or just waiting for a lock to be released.

However I've found a bug in that system too, when multiple visitors, who encountered a missing/outdated cache would set lock in parallel and start rebuild process. This of course would be slightly smaller number of parallel rebuild requests then without protection added in 5.2.0-B1, but still needs to be fixed.

Task: http://tracker.in-portal.org/view.php?id=1231

Ready for testing.

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Best Regards,

http://www.in-portal.com
http://www.alex-time.com

[Dmitry A.]

Thanks for the catch and patch Alex!

Will do tests soon and post here if any issues

DA