MyRocks - missing server optimizer patch for ICP

[George Ormond Lorch III]

rocksdb.bloomfilter3 fails due to missing server patch introduced in upstream Facebook MySQL here https://github.com/facebook/mysql-5.6/commit/723bfc97c7f7309c531c410133be3acd073f8129

This patch also impacts TokuDB. Immediately tokudb.bugs.simple_icp and tokudb.bugs.db233 fail. TokuDB can actually make use of this patch to improve ICP descending range scan performance and is the reason tokudb.bugs.simple_icp fails, it is getting a better result out of the descending range scan.

See also MYR-63

[George Ormond Lorch III (gl-az)]

Introducing this patch invalidates the need for the changes here https://github.com/percona/percona-server/pull/474 to fix https://tokutek.atlassian.net/browse/DB-233 as now end_range is going to be set by the optimizer prior to the descending scan reaching the end key.

[George Ormond Lorch III (gl-az)]

5.6:
http://jenkins.percona.com/view/PS%205.6/job/percona-server-5.6-param/1771/
https://github.com/percona/percona-server/pull/1502

5.7:
http://jenkins.percona.com/view/5.7/job/mysql-5.7-param/723/
https://github.com/percona/percona-server/pull/1503

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-1794