MDEV-21546 main.backup_stages occasionally reports lock wait timeout

With MDEV-16678, InnoDB background tasks (most notably, the purge of
committed transaction history) can acquire metadata locks.
Because of this, the lock_wait_timeout=0 is too strict and must
be relaxed.

The test used to fail easily if an extra sleep was added to
the end of dict_table_close(), before the MDL release. Now,
with lock_wait_timeout=1, the test passes even with an extra
0.1-second sleep added to dict_table_close().

Thanks to Monty for providing this fix.

0 files changed, 0 insertions, 0 deletions