BUG#30301356 - SOME EVENTS ARE DELAYED AFTER DROPPING EVENT
queues.c cleanup and refactoring.
Restore old version of _downhead() (from before cd483c55209)
that works well in an average case. Use it for queue_fix().
Move existing specialized version of _downhead() to queue_replace()
where it'll be handling the case it was specifically optimized for
(moving the element to the end of the queue).
And correct it to fix the heap not only down, but also up
(this fixes BUG#30301356).
e8e67bd...
by
Anushree Prakash B <email address hidden>
Bug#30689251 - BACKPORT TO MYSQL-5.6, BUG#29597896 - NULL POINTER DEREFERENCE IN LIBMYSQL
DESCRIPTION:
============
There can be issues if the packets sent by the server
are not proper. Certain checks should be performed at the
client side while unpacking fields data.
FIX:
====
Check for the appropriate fields data and error out if it
is not present.
RB: 23601
39c6011...
by
Sivert Sorumgard <email address hidden>
Bug#30628268: OUT OF MEMORY CRASH
The event scheduler has a THD which is used for e.g. keeping track
of the timing of the events. Thus, each scheduling of an event will
make use of this THD, which in turn allocates memory in the THD's
mem root. However, the mem root was never cleared, and hence, the
memory occupied would monotonically increase throughout the life
time of the server.
The root cause was found by Jon Olav Hauglid, and this fix clears the
THD's mem root for each event being scheduled.
