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  1. MariaDB Server
  2. MDEV-20422

InnoDB: Failing assertion: field->prefix_len > 0 with innodb_prefix_index_cluster_optimization=ON

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      Note: It currently fails pretty much every time for me, but it's still a non-deterministic concurrent test case, run with --repeat=N.

      --source include/have_innodb.inc
       
      SET @prefix_index_cluster_optimization.save= @@global.innodb_prefix_index_cluster_optimization;
      SET GLOBAL innodb_prefix_index_cluster_optimization= ON;
       
      CREATE TABLE t1 ( 
          a VARBINARY(1024),
          b BIT(10),
          c BIT(10) AS (b) VIRTUAL,
          UNIQUE(c,a(64))
      ) ENGINE=InnoDB;
       
      INSERT INTO t1 (a,b) VALUES ('foo',b'0'),('bar',b'1');
       
      --connect (con1,localhost,root,,test)
      SELECT * FROM information_schema.collations LIMIT 1;
      --connection default
      --send
          SELECT * FROM t1;
      --connection con1
      SELECT c FROM t1;
       
      # CLeanup
      --disconnect con1
      --connection default
      --reap
      DROP TABLE t1;
      SET GLOBAL innodb_prefix_index_cluster_optimization= @prefix_index_cluster_optimization.save;
      

      10.2 9de2e60d

      2019-08-26 13:26:28 0x7f25c05ee700  InnoDB: Assertion failure in file /data/src/10.2/storage/innobase/row/row0sel.cc line 4194
      InnoDB: Failing assertion: field->prefix_len > 0
       
      #6  0x0000563d9e68dd3a in ut_dbg_assertion_failed (expr=0x563d9ec1bc03 "field->prefix_len > 0", file=0x563d9ec1b470 "/data/src/10.2/storage/innobase/row/row0sel.cc", line=4194) at /data/src/10.2/storage/innobase/ut/ut0dbg.cc:60
      #7  0x0000563d9e5f4fdf in row_search_with_covering_prefix (prebuilt=0x7f257001af08, rec=0x7f25c0e0807f "", offsets=0x7f25c05eacc0) at /data/src/10.2/storage/innobase/row/row0sel.cc:4194
      #8  0x0000563d9e5f7a2a in row_search_mvcc (buf=0x7f25700199c8 "\377", mode=PAGE_CUR_G, prebuilt=0x7f257001af08, match_mode=0, direction=0) at /data/src/10.2/storage/innobase/row/row0sel.cc:5355
      #9  0x0000563d9e485a5b in ha_innobase::index_read (this=0x7f2570019238, buf=0x7f25700199c8 "\377", key_ptr=0x0, key_len=0, find_flag=HA_READ_AFTER_KEY) at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:9471
      #10 0x0000563d9e4869a6 in ha_innobase::index_first (this=0x7f2570019238, buf=0x7f25700199c8 "\377") at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:9847
      #11 0x0000563d9e279c9d in handler::ha_index_first (this=0x7f2570019238, buf=0x7f25700199c8 "\377") at /data/src/10.2/sql/handler.cc:2802
      #12 0x0000563d9e0678f5 in join_read_first (tab=0x7f2570012ae0) at /data/src/10.2/sql/sql_select.cc:19820
      #13 0x0000563d9e06532a in sub_select (join=0x7f2570011998, join_tab=0x7f2570012ae0, end_of_records=false) at /data/src/10.2/sql/sql_select.cc:18828
      #14 0x0000563d9e064913 in do_select (join=0x7f2570011998, procedure=0x0) at /data/src/10.2/sql/sql_select.cc:18375
      #15 0x0000563d9e03e45f in JOIN::exec_inner (this=0x7f2570011998) at /data/src/10.2/sql/sql_select.cc:3627
      #16 0x0000563d9e03d91a in JOIN::exec (this=0x7f2570011998) at /data/src/10.2/sql/sql_select.cc:3422
      #17 0x0000563d9e03ead0 in mysql_select (thd=0x7f2570000b00, tables=0x7f2570011290, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x7f2570011978, unit=0x7f2570004700, select_lex=0x7f2570004e40) at /data/src/10.2/sql/sql_select.cc:3822
      #18 0x0000563d9e032d3c in handle_select (thd=0x7f2570000b00, lex=0x7f2570004638, result=0x7f2570011978, setup_tables_done_option=0) at /data/src/10.2/sql/sql_select.cc:365
      #19 0x0000563d9dffdf05 in execute_sqlcom_select (thd=0x7f2570000b00, all_tables=0x7f2570011290) at /data/src/10.2/sql/sql_parse.cc:6226
      #20 0x0000563d9dff48e6 in mysql_execute_command (thd=0x7f2570000b00) at /data/src/10.2/sql/sql_parse.cc:3533
      #21 0x0000563d9e001db8 in mysql_parse (thd=0x7f2570000b00, rawbuf=0x7f25700110a8 "SELECT c FROM t1", length=16, parser_state=0x7f25c05ed200, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:7760
      #22 0x0000563d9dff00c1 in dispatch_command (command=COM_QUERY, thd=0x7f2570000b00, packet=0x7f25700088c1 "", packet_length=16, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:1832
      #23 0x0000563d9dfeea15 in do_command (thd=0x7f2570000b00) at /data/src/10.2/sql/sql_parse.cc:1385
      #24 0x0000563d9e14351d in do_handle_one_connection (connect=0x563da16fcfd0) at /data/src/10.2/sql/sql_connect.cc:1336
      #25 0x0000563d9e143288 in handle_one_connection (arg=0x563da16fcfd0) at /data/src/10.2/sql/sql_connect.cc:1241
      #26 0x0000563d9e972900 in pfs_spawn_thread (arg=0x563da1720620) at /data/src/10.2/storage/perfschema/pfs.cc:1862
      #27 0x00007f25c7b604a4 in start_thread (arg=0x7f25c05ee700) at pthread_create.c:456
      #28 0x00007f25c60a8d0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
      

      Both debug and non-debug fail.
      Also reproducible on 10.5.
      Not applicable to 10.1.

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              Assignee:
              marko Marko Mäkelä
              Reporter:
              elenst Elena Stepanova
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                Updated:
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