Details
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Bug
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Status: Open (View Workflow)
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Major
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Resolution: Unresolved
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10.4, 10.5
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None
Description
--source include/have_innodb.inc
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CREATE TABLE t1 (a CHAR(8)) ENGINE=InnoDB; |
INSERT INTO t1 VALUES ('foo'); |
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CREATE TABLE t2 (b VARCHAR(574)) ENGINE=InnoDB; |
INSERT INTO t2 VALUES ('bar'),('baz'); |
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CREATE TABLE t3 (e INT, d TEXT, PRIMARY KEY(e,d(8))) ENGINE=InnoDB; |
INSERT INTO t3 VALUES (1,'qux'); |
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CREATE TABLE t4 (f INT, KEY(f)) ENGINE=InnoDB; |
INSERT INTO t4 VALUES (1),(2); |
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SET SESSION join_cache_level= 4; |
SET SESSION join_buffer_space_limit= 16384; |
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SELECT DISTINCT a FROM t1 WHERE a IN (SELECT t2.b FROM t2 INNER JOIN t3 INNER JOIN t4 ON (t4.f = t3.e)); |
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10.4 c2ac0ce1 |
mysqld: /data/src/10.4/sql/sql_join_cache.cc:1682: virtual JOIN_CACHE::Match_flag JOIN_CACHE::get_match_flag_by_pos(uchar*): Assertion `0' failed.
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201013 1:30:36 [ERROR] mysqld got signal 6 ;
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#7 0x00007fb81a9fdf36 in __GI___assert_fail (assertion=0x559a41d96730 "0", file=0x559a41d967b0 "/data/src/10.4/sql/sql_join_cache.cc", line=1682, function=0x559a41d969e0 "virtual JOIN_CACHE::Match_flag JOIN_CACHE::get_match_flag_by_pos(uchar*)") at assert.c:101
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#8 0x0000559a4115a767 in JOIN_CACHE::get_match_flag_by_pos (this=0x7fb7c407aaf8, rec_ptr=0x7fb7c4070d44 "\375\375\003") at /data/src/10.4/sql/sql_join_cache.cc:1682
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#9 0x0000559a4115b0d8 in JOIN_CACHE::skip_if_not_needed_match (this=0x7fb7c407aaf8) at /data/src/10.4/sql/sql_join_cache.cc:2006
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#10 0x0000559a4115d85c in JOIN_CACHE_BNL::skip_next_candidate_for_match (this=0x7fb7c407aaf8, rec_ptr=0x7fb7c4070d44 "\375\375\003") at /data/src/10.4/sql/sql_join_cache.cc:3568
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#11 0x0000559a4115b8ff in JOIN_CACHE::join_matching_records (this=0x7fb7c407aaf8, skip_last=false) at /data/src/10.4/sql/sql_join_cache.cc:2292
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#12 0x0000559a4115b262 in JOIN_CACHE::join_records (this=0x7fb7c407aaf8, skip_last=false) at /data/src/10.4/sql/sql_join_cache.cc:2088
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#13 0x0000559a410045e9 in sub_select_cache (join=0x7fb7c4018520, join_tab=0x7fb7c4079690, end_of_records=true) at /data/src/10.4/sql/sql_select.cc:20186
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#14 0x0000559a410047fc in sub_select (join=0x7fb7c4018520, join_tab=0x7fb7c40792e8, end_of_records=true) at /data/src/10.4/sql/sql_select.cc:20357
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#15 0x0000559a410047fc in sub_select (join=0x7fb7c4018520, join_tab=0x7fb7c4078f40, end_of_records=true) at /data/src/10.4/sql/sql_select.cc:20357
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#16 0x0000559a410047fc in sub_select (join=0x7fb7c4018520, join_tab=0x7fb7c4078b98, end_of_records=true) at /data/src/10.4/sql/sql_select.cc:20357
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#17 0x0000559a41003f62 in do_select (join=0x7fb7c4018520, procedure=0x0) at /data/src/10.4/sql/sql_select.cc:19948
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#18 0x0000559a40fd8c07 in JOIN::exec_inner (this=0x7fb7c4018520) at /data/src/10.4/sql/sql_select.cc:4478
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#19 0x0000559a40fd7d36 in JOIN::exec (this=0x7fb7c4018520) at /data/src/10.4/sql/sql_select.cc:4260
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#20 0x0000559a40fd948a in mysql_select (thd=0x7fb7c4000d90, tables=0x7fb7c4013b40, wild_num=0, fields=..., conds=0x7fb7c4017990, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748609, result=0x7fb7c40184f8, unit=0x7fb7c4004cc0, select_lex=0x7fb7c4013578) at /data/src/10.4/sql/sql_select.cc:4695
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#21 0x0000559a40fc8e9b in handle_select (thd=0x7fb7c4000d90, lex=0x7fb7c4004c00, result=0x7fb7c40184f8, setup_tables_done_option=0) at /data/src/10.4/sql/sql_select.cc:410
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#22 0x0000559a40f8e738 in execute_sqlcom_select (thd=0x7fb7c4000d90, all_tables=0x7fb7c4013b40) at /data/src/10.4/sql/sql_parse.cc:6355
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#23 0x0000559a40f84d88 in mysql_execute_command (thd=0x7fb7c4000d90) at /data/src/10.4/sql/sql_parse.cc:3889
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#24 0x0000559a40f92743 in mysql_parse (thd=0x7fb7c4000d90, rawbuf=0x7fb7c4013448 "SELECT DISTINCT a FROM t1 WHERE a IN (SELECT t2.b FROM t2 INNER JOIN t3 INNER JOIN t4 ON (t4.f = t3.e))", length=103, parser_state=0x7fb8143c3550, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:7896
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#25 0x0000559a40f7ec4e in dispatch_command (command=COM_QUERY, thd=0x7fb7c4000d90, packet=0x7fb7c40087a1 "", packet_length=103, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1834
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#26 0x0000559a40f7d4b6 in do_command (thd=0x7fb7c4000d90) at /data/src/10.4/sql/sql_parse.cc:1352
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#27 0x0000559a4110b2cb in do_handle_one_connection (connect=0x559a441ff350) at /data/src/10.4/sql/sql_connect.cc:1412
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#28 0x0000559a4110b014 in handle_one_connection (arg=0x559a441ff350) at /data/src/10.4/sql/sql_connect.cc:1316
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#29 0x0000559a41b23b4a in pfs_spawn_thread (arg=0x559a44108250) at /data/src/10.4/storage/perfschema/pfs.cc:1869
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#30 0x00007fb81af15609 in start_thread (arg=<optimized out>) at pthread_create.c:477
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#31 0x00007fb81aae9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
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Reproducible on 10.4 and 10.5.
The test case above does not fail on 10.3, but the plan is different there, so maybe with some adjustments to the query and/or data the failure can be reproduced on earlier versions as well.
No obvious failure on a non-debug build.
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Plan on 10.4 (fails) |
EXPLAIN EXTENDED SELECT DISTINCT a FROM t1 WHERE a IN (SELECT t2.b FROM t2 INNER JOIN t3 INNER JOIN t4 ON (t4.f = t3.e)); |
id select_type table type possible_keys key key_len ref rows filtered Extra |
1 PRIMARY t1 ALL NULL NULL NULL NULL 1 100.00 Using temporary |
1 PRIMARY t3 index PRIMARY PRIMARY 14 NULL 1 100.00 Using index |
1 PRIMARY t4 hash_index f #hash#f:f 5:5 test.t3.e 2 50.00 Using index |
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) |
Warnings:
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Note 1003 select distinct `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2` join `test`.`t3` join `test`.`t4`) where `test`.`t4`.`f` = `test`.`t3`.`e` and `test`.`t1`.`a` = `test`.`t2`.`b` |
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Plan on 10.3 (does not fail) |
EXPLAIN EXTENDED SELECT DISTINCT a FROM t1 WHERE a IN (SELECT t2.b FROM t2 INNER JOIN t3 INNER JOIN t4 ON (t4.f = t3.e)); |
id select_type table type possible_keys key key_len ref rows filtered Extra |
1 PRIMARY t1 ALL NULL NULL NULL NULL 1 100.00 Using temporary |
1 PRIMARY t3 index PRIMARY PRIMARY 14 NULL 1 100.00 Using index |
1 PRIMARY t4 hash_index f #hash#f:f 5:5 test.t3.e 2 50.00 Using index |
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where; FirstMatch(t1) |
Warnings:
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Note 1003 select distinct `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2` join `test`.`t3` join `test`.`t4`) where `test`.`t4`.`f` = `test`.`t3`.`e` and `test`.`t1`.`a` = `test`.`t2`.`b` |