Hi, Alexey! Ok to push, thanks! Just fix the test first (see below) On Oct 22, Alexey Botchkov wrote:

revision-id: 65b0617836390bb76104cb37094e16bafa6da8b2 (mariadb-10.0.27-12-g65b0617) parent(s): fb38d2642011c574cc9103ae1a1f9dd77f7f027e committer: Alexey Botchkov timestamp: 2016-10-22 12:08:15 +0400 message:

MDEV-10846 Running mysqldump backup twice returns error: Table 'mysql.proc' doesn't exist.

The mysql_rm_db() doesn't seem to expect the 'mysql' database to be deleted. Checks for that added. Also fixed the bug MDEV-11105 Table named 'db' has weird side effect. The db.opt file now removed separately.

--- mysql-test/r/drop.result | 6 ++++++ mysql-test/t/drop.test | 9 +++++++++ sql/sql_db.cc | 26 +++++++++++++++++++++----- 3 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/mysql-test/r/drop.result b/mysql-test/r/drop.result index c23ffbe3..ee1758f 100644 --- a/mysql-test/r/drop.result +++ b/mysql-test/r/drop.result @@ -209,3 +209,9 @@ INSERT INTO table1 VALUES (1); ERROR 42S02: Unknown table 't.notable' DROP TABLE table1,table2; # End BUG#34750 +# +# MDEV-11105 Table named 'db' has weird side effect. +# +CREATE DATABASE mysqltest; +CREATE TABLE mysqltest.t1(id INT);

huh? the table name is supposed to be 'db' here :)

+DROP DATABASE mysqltest; diff --git a/sql/sql_db.cc b/sql/sql_db.cc index e89c3d9..0a3ff64 100644 --- a/sql/sql_db.cc +++ b/sql/sql_db.cc @@ -784,7 +784,7 @@ bool mysql_alter_db(THD *thd, const char *db, HA_CREATE_INFO *create_info) bool mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent) { ulong deleted_tables= 0; - bool error= true; + bool error= true, rm_mysql_schema; char path[FN_REFLEN + 16]; MY_DIR *dirp; uint length; @@ -809,6 +809,18 @@ bool mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent) length= build_table_filename(path, sizeof(path) - 1, db, "", "", 0); strmov(path+length, MY_DB_OPT_FILE); // Append db option file name del_dbopt(path); // Remove dboption hash entry + /* + Now remove the db.opt file. + The 'find_db_tables_and_rm_known_files' doesn't remove this file + if there exists a table with the name 'db', so let's just do it + separately. We know this file exists and needs to be deleted anyway.

ah, thanks, I see now. I wondered why a table 'db' would matter.

+ */ + if (my_delete_with_symlink(path, MYF(0)) && my_errno != ENOENT) + { + my_error(EE_DELETE, MYF(0), path, my_errno); + DBUG_RETURN(true);

here I don't think this error is quite correct. nowhere else mysql_rm_db() seems to fail with EE_DELETE. It always says "Error dropping database (can't rmdir './exp_db', errno: 39 "Directory not empty")" May be you should add this EE_DELETE as a warning?

+ } + path[length]= '\0'; // Remove file name

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