Why does Red Hat recommend less than 0.01% chance for any descendent subdirectory to be pinned by setting the ceph.dir.pin.random attribute?

Explanation

The percentage is the probability with which the tree should be pinned to a mds rank. A higher percentage/probability indicates that the pinning (relocation) should be done more aggressively. Random pinning could lead to more sub-trees to get distributed leading to increased latencies while fetching information from the auth mds in case of a cache miss. Hence, the lower th...