func (t *MemoryTable) RemoveRecord(ctx context.Context, h int64, r []types.Datum) error {
	t.mu.Lock()
	t.tree.Delete(itemKey(h))
	t.mu.Unlock()
	return nil
}
// RemoveRecord implements table.Table RemoveRecord interface.
RemoveRecord implements table.Table RemoveRecord interface.
// RemoveRecord implements table . Table RemoveRecord interface .
func (t *MemoryTable) RemoveRecord(ctx context.Context, h int64, r []types.Datum) error {
	t.mu.Lock()
	t.tree.Delete(itemKey(h))
	t.mu.Unlock()
	return nil
}
func ( t * MemoryTable ) RemoveRecord ( ctx context . Context , h int64 , r [ ] types . Datum ) error { t . mu . Lock ( ) t . tree . Delete ( itemKey ( h ) ) t . mu . Unlock ( ) return nil }
RemoveRecord implements table.Table RemoveRecord interface.
RemoveRecord implements table . Table RemoveRecord interface .