commit dcd9379eb5707bc7514a2ff4d9127790356505cb
Author: Manuel Ung <mung@fb.com>
Date:   Fri Jun 14 10:38:17 2019 -0700

    Skip valgrind for rocksdb.force_shutdown

    Summary:
    This test does unclean shutdown, and leaks memory.

    Squash with: D15749084

    Reviewed By: hermanlee

    Differential Revision: D15828957

    fbshipit-source-id: 30541455d74

commit f8f364b47f2784f16b401f27658f1c16eaf348ec
Author: Jay Edgar <jkedgar@fb.com>
Date:   Tue Oct 17 15:19:31 2017 -0700

    Add a hashed, hierarchical, wheel timer implementation

    Summary:
    In order to implement idle timeouts on detached sessions we need something inside MySQL that is lightweight and can handle calling events in the future with very little cost for cancelling or resetting the event.  A hashed, hi

    By default the timers are grouped into 10ms buckets (the 'hashed' part), though the size of the buckets is configurable at the creation of the timer.  Each wheel (the 'wheel' part) maintains 256 buckets and cascades to the whe

    Reviewed By: djwatson

    Differential Revision: D6199806

    fbshipit-source-id: 5e1590f

commit 394d0712d3d46a87a8063e14e998e9c22336e3a6
Author: Anca Agape <anca@fb.com>
Date:   Thu Jul 27 15:43:07 2017 -0700

    Fix rpl.rpl_4threads_deadlock test broken by D5005670

    Summary:
    In D5005670 in fill_fields_processlist() function we introduced a point
    where we were trying to take the LOCK_thd_data before the
    synchronization point used by test
    processlist_after_LOCK_thd_count_before_LOCK_thd_data. This was
    happening in get_attached_srv_session() function called. Replaced this
    with get_attached_srv_session_safe() and moved it after lock is aquired.

    Reviewed By: tianx

    Differential Revision: D5505992

    fbshipit-source-id: bc53924