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Author SHA1 Message Date
Sergey Vojtovich
e2a99f1863 MDEV-5616 - Deadlock between CREATE/DROP FUNCTION and SELECT from view 
Deadlock happened due to mixed lock order.
CREATE/DROP function: wrlock(THR_LOCK_udf) -> lock(LOCK_open)
SELECT from view: lock(LOCK_open) -> rdlock(THR_LOCK_udf)

Fixed CREATE/DROP function so that LOCK_open does not intersect with
wrlock(THR_LOCK_udf).

10.0 is not affected: it doesn't hold LOCK_open while opening view.
 2014-02-13 16:41:08 +04:00