Hello, I filed these two bugs against multi-range read (MRR) in MariaDB 10.0.12 which affected us and could use some review of the patch for correctness, along with development of a proper test case: MDEV-6878 <https://mariadb.atlassian.net/browse/MDEV-6878>: Use of uninitialized saved_primary_key in Mrr_ordered_index_reader::resume_read() MDEV-6879 <https://mariadb.atlassian.net/browse/MDEV-6879>: Dereference of NULL primary_file->table in DsMrr_impl::get_disk_sweep_mrr_cost() Could someone please take a look at them? Regards, Jeremy