Comments (2)
I was able to reproduce similar issue with RQG grammar: galera_stress-56-noddl.yy, using 5.5 branch.
This hang was due to two appliers conflicting with local transaction and resulting later in(acceptable) BF BF lock conflict. Granting the lock back to other BF thread did not happen, after local transaction aborted.
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Fix for above issue was pushed in 5.5 branch. Similar vulnerability is in 5.6 branch, but problem has not reproduced in 5.6 so far. It may be possible to work out a regression test for this issue specifically.
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