https://github.com/percona/percona-server/pull/585, https://github.com/percona/percona-server/pull/586, https://github.com/percona/percona-server/pull/587
https:/ /github. com/percona/ percona- server/ pull/585, https:/ /github. com/percona/ percona- server/ pull/586, https:/ /github. com/percona/ percona- server/ pull/587