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  1. MariaDB Server
  2. MDEV-18794

Assertion `!m_innodb' failed in ha_partition::cmp_ref upon SELECT from partitioned table

Details

    Description

      Note: I'm not sure that versioning has anything to do with it, but I couldn't get rid of it in the test case.

      --source include/have_innodb.inc
      		 
      --source include/have_partition.inc
      		 
       
      		 
      CREATE TABLE t1 (pk INT AUTO_INCREMENT, i INT, c CHAR(1), PRIMARY KEY (pk), KEY(i)) 
      ENGINE=InnoDB WITH SYSTEM VERSIONING PARTITION BY KEY() PARTITIONS 2;
      		 
       
      		 
      INSERT INTO t1 (i,c) VALUES (1,'a'),(2,'b'),(NULL,'c'),(NULL,'b');
      		 
      ALTER TABLE t1 DROP SYSTEM VERSIONING;
      		 
      REPLACE INTO t1 SELECT * FROM t1;
      		 
      SELECT * FROM t1 WHERE i > 0 OR pk = 1000 LIMIT 1;
      		 
       
      		 
      # Cleanup
      		 
      DROP TABLE t1;

      10.3 82da9855

      		 
      mysqld: /data/src/10.3/sql/ha_partition.cc:10301: virtual int ha_partition::cmp_ref(const uchar*, const uchar*): Assertion `!m_innodb' failed.
      		 
      190302 17:15:54 [ERROR] mysqld got signal 6 ;
      		 
       
      		 
      #7  0x00007f2b87fa0ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
      		 
      #8  0x0000555ad89680ac in ha_partition::cmp_ref (this=0x7f2b2c00d418, ref1=0x7f2b2c05f780 "", ref2=0x7f2b2c183da8 "\001") at /data/src/10.3/sql/ha_partition.cc:10301
      		 
      #9  0x0000555ad839a1e0 in refpos_order_cmp (arg=0x7f2b2c00d418, a=0x7f2b2c05f780, b=0x7f2b2c183da8) at /data/src/10.3/sql/sql_delete.cc:990
      		 
      #10 0x0000555ad89a6697 in tree_insert (tree=0x7f2b2c019b58, key=0x7f2b2c183da8, key_size=0, custom_arg=0x7f2b2c00d418) at /data/src/10.3/mysys/tree.c:250
      		 
      #11 0x0000555ad7fb825a in Unique::unique_add (this=0x7f2b2c0199b8, ptr=0x7f2b2c183da8) at /data/src/10.3/sql/uniques.h:60
      		 
      #12 0x0000555ad8368b75 in read_keys_and_merge_scans (thd=0x7f2b2c000b00, head=0x7f2b2c0a6c30, quick_selects=..., pk_quick_select=0x7f2b2c172330, read_record=0x7f2b2c172268, intersection=false, filtered_scans=0x0, unique_ptr=0x7f2b2c1721f0) at /data/src/10.3/sql/opt_range.cc:11055
      		 
      #13 0x0000555ad8368cdf in QUICK_INDEX_MERGE_SELECT::read_keys_and_merge (this=0x7f2b2c1721b0) at /data/src/10.3/sql/opt_range.cc:11086
      		 
      #14 0x0000555ad8351b79 in QUICK_INDEX_SORT_SELECT::reset (this=0x7f2b2c1721b0) at /data/src/10.3/sql/opt_range.cc:1370
      		 
      #15 0x0000555ad7f711e2 in join_init_read_record (tab=0x7f2b2c0181d0) at /data/src/10.3/sql/sql_select.cc:20316
      		 
      #16 0x0000555ad7f6efb8 in sub_select (join=0x7f2b2c015da8, join_tab=0x7f2b2c0181d0, end_of_records=false) at /data/src/10.3/sql/sql_select.cc:19392
      		 
      #17 0x0000555ad7f6e554 in do_select (join=0x7f2b2c015da8, procedure=0x0) at /data/src/10.3/sql/sql_select.cc:18935
      		 
      #18 0x0000555ad7f4714d in JOIN::exec_inner (this=0x7f2b2c015da8) at /data/src/10.3/sql/sql_select.cc:4040
      		 
      #19 0x0000555ad7f4658e in JOIN::exec (this=0x7f2b2c015da8) at /data/src/10.3/sql/sql_select.cc:3834
      		 
      #20 0x0000555ad7f4782e in mysql_select (thd=0x7f2b2c000b00, tables=0x7f2b2c014f28, wild_num=1, fields=..., conds=0x7f2b2c015bb0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x7f2b2c015d80, unit=0x7f2b2c0049c8, select_lex=0x7f2b2c005138) at /data/src/10.3/sql/sql_select.cc:4239
      		 
      #21 0x0000555ad7f39754 in handle_select (thd=0x7f2b2c000b00, lex=0x7f2b2c004900, result=0x7f2b2c015d80, setup_tables_done_option=0) at /data/src/10.3/sql/sql_select.cc:385
      		 
      #22 0x0000555ad7f0418c in execute_sqlcom_select (thd=0x7f2b2c000b00, all_tables=0x7f2b2c014f28) at /data/src/10.3/sql/sql_parse.cc:6551
      		 
      #23 0x0000555ad7efa7fd in mysql_execute_command (thd=0x7f2b2c000b00) at /data/src/10.3/sql/sql_parse.cc:3772
      		 
      #24 0x0000555ad7f08145 in mysql_parse (thd=0x7f2b2c000b00, rawbuf=0x7f2b2c014cf8 "SELECT * FROM t1 WHERE i > 0 OR pk = 1000 LIMIT 1", length=49, parser_state=0x7f2b812e65f0, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:8095
      		 
      #25 0x0000555ad7ef52f9 in dispatch_command (command=COM_QUERY, thd=0x7f2b2c000b00, packet=0x7f2b2c162281 "", packet_length=49, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1854
      		 
      #26 0x0000555ad7ef3cd1 in do_command (thd=0x7f2b2c000b00) at /data/src/10.3/sql/sql_parse.cc:1396
      		 
      #27 0x0000555ad805c41f in do_handle_one_connection (connect=0x555adad67bc0) at /data/src/10.3/sql/sql_connect.cc:1403
      		 
      #28 0x0000555ad805c1a3 in handle_one_connection (arg=0x555adad67bc0) at /data/src/10.3/sql/sql_connect.cc:1309
      		 
      #29 0x0000555ad84f88b3 in pfs_spawn_thread (arg=0x555adada9480) at /data/src/10.3/storage/perfschema/pfs.cc:1862
      		 
      #30 0x00007f2b89c77494 in start_thread (arg=0x7f2b812e7700) at pthread_create.c:333
      		 
      #31 0x00007f2b8805d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

      No obvious effect on a non-debug build.

      Attachments

        Issue Links

          is caused by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-19751 Wrong partitioning by KEY() after key dropped

          • Major - Major loss of function.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-17091 Assertion `old_part_id == m_last_part' failed in ha_partition::update_row or `part_id == m_last_part' in ha_partition::delete_row upon UPDATE/DELETE after dropping versioning

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30442 Assertion `!m_innodb' failed in ha_partition::cmp_ref on MULTI-DELETE

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

            midenok Aleksey Midenkov added a comment - - edited

            Reproducible without System versioning

            create or replace table t1 (pk int, x timestamp(6), primary key (pk, x)) engine innodb
            		 
            partition by key() partitions 2;
            		 
             
            		 
            insert into t1 (pk, x) values (1, '2000-01-01 00:00'), (2, '2000-01-01 00:01');
            		 
            alter table t1 drop primary key, drop column x, add primary key (pk); 
            select * from t1 partition (p0);

            Result

            +----+
            		 
            | pk |
            		 
            +----+
            		 
            |  1 |
            		 
            |  2 |
            		 
            +----+

            Both records are in p0 which is unacceptable for new partitioning expression.

            Expected

            Table is repartitioned by pk.

            Cause

            Empty key() clause implies that key might be changed by ALTER, but inplace algorithm must not be used since repartitioning is required for a different key.

            Fix

            Prohibit inplace when there is DROP PRIMARY KEY and table is partitioned by key.

            More details

            midenok Aleksey Midenkov added a comment - - edited Reproducible without System versioning create or replace table t1 (pk int , x timestamp (6), primary key (pk, x)) engine innodb partition by key () partitions 2;   insert into t1 (pk, x) values (1, '2000-01-01 00:00' ), (2, '2000-01-01 00:01' ); alter table t1 drop primary key , drop column x, add primary key (pk); select * from t1 partition (p0); Result +----+ | pk | +----+ | 1 | | 2 | +----+ Both records are in p0 which is unacceptable for new partitioning expression. Expected Table is repartitioned by pk . Cause Empty key() clause implies that key might be changed by ALTER, but inplace algorithm must not be used since repartitioning is required for a different key. Fix Prohibit inplace when there is DROP PRIMARY KEY and table is partitioned by key. More details

            People

              midenok Aleksey Midenkov
              elenst Elena Stepanova
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              Dates

                Created:
                Updated:
                Resolved:

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