Ceph - MDS, cephfs - log [ERR] : loaded dup inode

Issue

In ceph-mds log or ceph.log we can see following error:

Sep 07 14:12:39 mons-0 ceph-mds[1722]: 2020-09-07 14:12:39.206 7fc40ad87700  0 mds.0.cache.dir(0x600) _fetched  badness: got (but i already had) [inode 0x10006e673ba [2,head] ~mds0/stray9/10006e673ba auth v244208043 s=5323 n(v0 b5323 1=1+0) (iversion lock) 0x55a68e436000] mode 33152 mtime 2017-10-30 12:45:00.306636
Sep 07 14:12:39 mons-0 ceph-mds[1722]: 2020-09-07 14:12:39.206 7fc40ad87700 -1 log_channel(cluster) log [ERR] : loaded dup inode 0x10006e673ba [2,head] v246213544 at ~mds0/stray0/10006e673ba, but inode 0x10006e673ba.head v244208043 already exists at ~mds0/stray9/10006e673ba