MySQL 9.3 Reference Manual Including MySQL NDB Cluster 9.3
When data is cloned, the following directories and files are created for internal use. They should not be modified.
#clone
: Contains internal clone files
used by the cloning operation. Created in the directory that
data is cloned to.
#ib_archive
: Contains internally
archived log files, archived on the donor during the cloning
operation.
*.#clone
files: Temporary data files
created on the recipient while data is removed from the
recipient data directory and new data is cloned during a
remote cloning operation.