MDEV-21027 Assertion `part_share->auto_inc_initialized || !can_use_for_auto_inc_init()' failed in ha_partition::set_auto_increment_if_higher

ha_partition::set_auto_increment_if_higher expects
part_share->auto_inc_initialized is true or can_use_for_auto_inc_init()
is false (but as the comment of this method says, it returns false
only if we use Spider engine with DROP TABLE or ALTER TABLE query).
However, part_share->auto_inc_initialized becomes true only after all
partitions are opened (since 6dce6aecebe6ef78a14cb5c5c5daa8a355551e40).

Therefore, I added a conditional expression in order to read all
partitions when we execute REPLACE on a table that has an
AUTO_INCREMENT column.           

Reviewed by: Nayuta Yanagisawa
Reviewed by: Alexey Botchkov

1 files changed, 4 insertions, 3 deletions

diff --git a/sql/ha_partition.h b/sql/ha_partition.h
index e85c61b839d..6c0e4ef6cf2 100644
--- a/sql/ha_partition.h
+++ b/sql/ha_partition.h
@@ -1400,15 +1400,16 @@ private:
     unlock_auto_increment();
   }
 
-  void check_insert_autoincrement()
+  void check_insert_or_replace_autoincrement()
   {
     /*
-      If we INSERT into the table having the AUTO_INCREMENT column,
+      If we INSERT or REPLACE into the table having the AUTO_INCREMENT column,
       we have to read all partitions for the next autoincrement value
       unless we already did it.
     */
     if (!part_share->auto_inc_initialized &&
-        ha_thd()->lex->sql_command == SQLCOM_INSERT &&
+        (ha_thd()->lex->sql_command == SQLCOM_INSERT || 
+         ha_thd()->lex->sql_command == SQLCOM_REPLACE) &&
         table->found_next_number_field)
       bitmap_set_all(&m_part_info->read_partitions);
   }