Hi, Alexey! We've already discussed the solution, so ok to push. But it's a bit weird to have "mdev17148" in the std_data, could you rename it to mdev17148.frm? Or, even better, don't check in a binary file, but do instead create table t1 (a int); copy_file $datadir/test/t1.frm $datadir/db1/T1.frm; std_data is for files that cannot be easily created in the test. Like a .frm file from mysql-4.0. On Dec 24, Alexey Botchkov wrote:

revision-id: 54411ba5caee35d0a64e727c117c222b6eef8812 (mariadb-10.2.19-98-g54411ba) parent(s): 975f4a1295f2b678c5ecea2cf4cfc69e177d88f5 committer: Alexey Botchkov timestamp: 2018-12-24 16:41:16 +0400 message:

MDEV-17148 DROP DATABASE throw "Directory not empty" after changed lower_case_table_names.

No need to lowercase table names on case-sensitive file systems, as the cache won't contain the 'lowercased' table anyway. And it prevents the UPPERCASE.frm from being deleted.

mysql-test/r/lowercase_table.result | 2 ++ mysql-test/std_data/mdev17148 | Bin 0 -> 433 bytes mysql-test/t/lowercase_table.test | 10 ++++++++++ sql/sql_db.cc | 8 ++++++-- 4 files changed, 18 insertions(+), 2 deletions(-)

Regards, Sergei Chief Architect MariaDB and security@mariadb.org