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  1. MariaDB Server
  2. MDEV-18156

Assertion `0' failed or `btr_validate_index(index, 0, false)' in row_upd_sec_index_entry or error code 126: Index is corrupted upon DELETE with PAD_CHAR_TO_FULL_LENGTH




      Note: It might well be a duplicate of MDEV-18153, the results are exactly the same, but it's a different SQL_MODE (and thus different affected versions), and different table structures, so I'm filing it separately just in case.

      CREATE TABLE t1 (c CHAR(8), v BINARY(8) AS (c), KEY(v));
      INSERT INTO t1 (c) VALUES ('foo') ;
      DELETE FROM t1 WHERE c <> 'bar';
      # Cleanup
      DROP TABLE t1;

      10.2 0c20b247de with MyISAM

      mysqltest: At line 5: query 'DELETE FROM t1 WHERE c <> 'bar'' failed: 126: Index for table './test/t1.MYI' is corrupt; try to repair it

      10.2 debug 0c20b247de with InnoDB

      2019-01-06 22:02:13 140655082366720 [ERROR] InnoDB: Record in index `v` of table `test`.`t1` was not found on update: TUPLE (info_bits=0, 2 fields): {[8]foo     (0x666F6F2020202020),[6]      (0x000000000200)} at: COMPACT RECORD(info_bits=0, 2 fields): {[8]foo     (0x666F6F0000000000),[6]      (0x000000000200)}
      mysqld: /data/src/10.2/storage/innobase/row/row0upd.cc:2436: dberr_t row_upd_sec_index_entry(upd_node_t*, que_thr_t*): Assertion `0' failed.
      190106 22:02:13 [ERROR] mysqld got signal 6 ;
      #7  0x00007fecd7f19ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
      #8  0x000055bf73ba59bb in row_upd_sec_index_entry (node=0x7fec88136de0, thr=0x7fec880848a8) at /data/src/10.2/storage/innobase/row/row0upd.cc:2436
      #9  0x000055bf73ba6031 in row_upd_sec_step (node=0x7fec88136de0, thr=0x7fec880848a8) at /data/src/10.2/storage/innobase/row/row0upd.cc:2549
      #10 0x000055bf73ba82b2 in row_upd (node=0x7fec88136de0, thr=0x7fec880848a8) at /data/src/10.2/storage/innobase/row/row0upd.cc:3308
      #11 0x000055bf73ba8603 in row_upd_step (thr=0x7fec880848a8) at /data/src/10.2/storage/innobase/row/row0upd.cc:3425
      #12 0x000055bf73b4ec37 in row_update_for_mysql (prebuilt=0x7fec881362d8) at /data/src/10.2/storage/innobase/row/row0mysql.cc:1830
      #13 0x000055bf73a1536b in ha_innobase::delete_row (this=0x7fec88135498, record=0x7fec880311d0 "\371foo     foo     ", '\245' <repeats 31 times>, "\030\022\003\210\354\177") at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:9098
      #14 0x000055bf73709360 in handler::ha_delete_row (this=0x7fec88135498, buf=0x7fec880311d0 "\371foo     foo     ", '\245' <repeats 31 times>, "\030\022\003\210\354\177") at /data/src/10.2/sql/handler.cc:6021
      #15 0x000055bf73898cb4 in mysql_delete (thd=0x7fec88000b00, table_list=0x7fec88012530, conds=0x7fec88012ce8, order_list=0x7fec88005078, limit=18446744073709551615, options=0, result=0x0) at /data/src/10.2/sql/sql_delete.cc:583
      #16 0x000055bf73484616 in mysql_execute_command (thd=0x7fec88000b00) at /data/src/10.2/sql/sql_parse.cc:4636
      #17 0x000055bf7348ef51 in mysql_parse (thd=0x7fec88000b00, rawbuf=0x7fec88012448 "DELETE FROM t1 WHERE c <> 'bar'", length=31, parser_state=0x7fecd0385200, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:8015
      #18 0x000055bf7347c88b in dispatch_command (command=COM_QUERY, thd=0x7fec88000b00, packet=0x7fec88096261 "DELETE FROM t1 WHERE c <> 'bar'", packet_length=31, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:1826
      #19 0x000055bf7347b1e2 in do_command (thd=0x7fec88000b00) at /data/src/10.2/sql/sql_parse.cc:1379
      #20 0x000055bf735cdccd in do_handle_one_connection (connect=0x55bf772692d0) at /data/src/10.2/sql/sql_connect.cc:1335
      #21 0x000055bf735cda5a in handle_one_connection (arg=0x55bf772692d0) at /data/src/10.2/sql/sql_connect.cc:1241
      #22 0x000055bf739f397c in pfs_spawn_thread (arg=0x55bf771af6d0) at /data/src/10.2/storage/perfschema/pfs.cc:1862
      #23 0x00007fecd9bf0494 in start_thread (arg=0x7fecd0386700) at pthread_create.c:333
      #24 0x00007fecd7fd693f in clone () from /lib/x86_64-linux-gnu/libc.so.6

      10.2 non-debug 0c20b247de with InnoDB

      2019-01-06 22:03:36 140321956206336 [ERROR] InnoDB: Record in index `v` of table `test`.`t1` was not found on update: TUPLE (info_bits=0, 2 fields): {[8]foo     (0x666F6F2020202020),[6]      (0x000000000200)} at: COMPACT RECORD(info_bits=0, 2 fields): {[8]foo     (0x666F6F0000000000),[6]      (0x000000000200)}


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              bar Alexander Barkov
              elenst Elena Stepanova
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