BUG#24315031 FAILING ASSERTION: !TABLE->CAN_BE_EVICTED

Analysis: the old table is dropped, just after it's added into drop list, and new table with the same name is created, then we try to drop the new table in background. Solution: Don't drop a table in background if table->to_be_dropped is false. Reviewed-by: Jimmy Yang <jimmy.yang@oracle.com> RB: 13414

Author: Shaohua Wang

storage/innobase/row/row0mysql.cc

@@ -2888,6 +2888,10 @@ row_drop_tables_for_mysql_in_background(void)
 return(n_tables + n_tables_dropped);
 }
 
+DBUG_EXECUTE_IF("row_drop_tables_in_background_sleep",
+os_thread_sleep(5000000);
+);
+
 table = dict_table_open_on_name(drop->table_name, FALSE, FALSE,
 DICT_ERR_IGNORE_NONE);
 
@@ -2898,6 +2902,16 @@ row_drop_tables_for_mysql_in_background(void)
 goto already_dropped;
 }
 
+if (!table->to_be_dropped) {
+/* There is a scenario: the old table is dropped
+just after it's added into drop list, and new
+table with the same name is created, then we try
+to drop the new table in background. */
+dict_table_close(table, FALSE, FALSE);
+
+goto already_dropped;
+}
+
 ut_a(!table->can_be_evicted);
 
 dict_table_close(table, FALSE, FALSE);
@@ -3766,6 +3780,13 @@ row_drop_table_for_mysql(
 }
 }
 
+
+DBUG_EXECUTE_IF("row_drop_table_add_to_background",
+row_add_table_to_background_drop_list(table->name.m_name);
+err = DB_SUCCESS;
+goto funct_exit;
+);
+
 /* TODO: could we replace the counter n_foreign_key_checks_running
 with lock checks on the table? Acquire here an exclusive lock on the
 table, and rewrite lock0lock.cc and the lock wait in srv0srv.cc so that