Ceph - OSD FAILED assert(!actingbackfill.empty())

Issue

• Ceph - OSD FAILED assert(!actingbackfill.empty())

2017-02-21 18:03:44.903695 7f7547a58700 -1 osd/ReplicatedPG.cc: In function 'bool ReplicatedPG::is_degraded_or_backfilling_object(const hobject_t&)' thread 7f7547a58700 time 2017-02-21 18:03:44.842106
osd/ReplicatedPG.cc: 418: FAILED assert(!actingbackfill.empty())

 ceph version 0.94.5-13.el7cp (246fb2b4b7459217c6b2770b87299a232a52b733)

1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x85) [0xb08f35]
 2: /usr/bin/ceph-osd() [0x80b1f7]
 3: (ReplicatedPG::handle_watch_timeout(std::tr1::shared_ptr)+0x133) [0x817053]
 4: (HandleDelayedWatchTimeout::finish(int)+0xea) [0x6d90fa]
 5: (Context::complete(int)+0x9) [0x683589]
 6: (PG::scrub_clear_state()+0x34c) [0x7984fc]