Anyone? On 15-1-2017 11:56, Mark Rotteveel wrote: > I have a test in Jaybird that post multiple events > (https://github.com/FirebirdSQL/jaybird/blob/master/src/test/org/firebirdsql/event/TestFBEventManager.java#L173) > > Essentially it inserts on multiple threads (100 inserts per thread, 5 > threads, a commit after each insert) which causes a trigger to post > > POST_EVENT 'TEST_EVENT_A' > POST_EVENT 'TEST_EVENT_B' > POST_EVENT 'TEST_EVENT_A' > > (yes, it is posting TEST_EVENT_A twice) > > Which should lead to posting TEST_EVENT_A 1000 times and TEST_EVENT_B > 500 times. This test occasionally fails (about 1 in 3 runs on Firebird > 3). I initially thought I wasn't waiting long enough for all events to > be received. > > After adding some extra debug logging, it looks like Firebird is > occasionally losing event registrations (not posting them, but the event > is unregistered), or posting an event with the id of TEST_EVENT_A, but > posting the count of TEST_EVENT_B (or vice versa), but both events are > unregistered, which seems to indicate some sort of race condition or > interleaved writes of the event. > > I can reproduce this problem both with Jaybird 2.2 and Jaybird 3, which > have a totally different implementations. > > As far as I can tell it is not version specific, but it is more easily > reproducible on Firebird 3 and 4 (probably because I'm using SuperServer). > > Could someone take a look at this? > > Mark >
-- Mark Rotteveel ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
