InnoDB and the Thread
Sanitizer do not work well together in MySQL 5.7. There are hundreds of possible
data races reported by the Thread Sanitizer in the InnoDB code
for the simplest case of initializing the MySQL server and
shutting it down. Luckily, most of these data races are
benign. The problem of finding an interesting data race in
the InnoDB software is similar to finding evidence of a
sub-atomic particle in a particle accelerator; many Thread
Sanitizer events must be analyzed before something interesting is
found.
One example of a benign data race is InnoDB's implementation of
fuzzy counters. A …
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Dec
29
2015