RHCS 5 - MDS crashes with " /builddir/build/BUILD/ceph-16.2.0/src/include/cephfs/metrics/Types.h: 56: ceph_abort_msg("abort() called")"

Solution In Progress - Updated -

Issue

Ceph MDS is repeatedly crashing with:

Dec 08 14:11:45 mdss-1 conmon[3431]: debug     -1> 2021-12-08T13:11:45.526+0000 7f08eb0aa700 -1 /builddir/build/BUILD/ceph-16.2.0/src/include/cephfs/metrics/Types.h: In function 'std::ostream& operator<<(std::ostream&, const ClientMetricType&)' thread 7f08eb0aa700 time 2021-12-08T13:11:45.526200+0000
Dec 08 14:11:45 mdss-1 conmon[3431]: /builddir/build/BUILD/ceph-16.2.0/src/include/cephfs/metrics/Types.h: 56: ceph_abort_msg("abort() called")
Dec 08 14:11:45 mdss-1 conmon[3431]: 
Dec 08 14:11:45 mdss-1 conmon[3431]:  ceph version 16.2.0-117.el8cp (0e34bb74700060ebfaa22d99b7d2cdc037b28a57) pacific (stable)
Dec 08 14:11:45 mdss-1 conmon[3431]:  1: (ceph::__ceph_abort(char const*, int, char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)+0xe5) [0x7f08f3d15cd4]
Dec 08 14:11:45 mdss-1 conmon[3431]:  2: (operator<<(std::ostream&, ClientMetricType const&)+0x10e) [0x7f08f3f9a2ce]
Dec 08 14:11:45 mdss-1 conmon[3431]:  3: (MClientMetrics::print(std::ostream&) const+0x1a1) [0x7f08f3f9a4a1]
Dec 08 14:11:45 mdss-1 conmon[3431]:  4: (DispatchQueue::entry()+0x1be2) [0x7f08f3f50312]
Dec 08 14:11:45 mdss-1 conmon[3431]:  5: (DispatchQueue::DispatchThread::entry()+0x11) [0x7f08f3fff9b1]
Dec 08 14:11:45 mdss-1 conmon[3431]:  6: /lib64/libpthread.so.0(+0x814a) [0x7f08f2ab714a]
Dec 08 14:11:45 mdss-1 conmon[3431]:  7: clone()

Environment

Red Hat Ceph Storage 5 - up to 5.0z3 included
16.2.0-146.el8cp
16.2.0-143.el8cp
16.2.0-117.el8cp

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