Details
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Bug
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Status: Confirmed (View Workflow)
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Major
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Resolution: Unresolved
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10.5, 10.6, 10.11, 11.2, 11.4, 11.6, 11.7
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None
Description
Split from MDEV-32667. Re-verified on all versions. For 10.5 and 10.6 re-verification was done on the latest revisions
(10.5.28 7afee25b08bf801a97ce3246bb604d388572eace and 10.6.21 074831ec61e8cd2c003df1a7316f202cbb902474),
which include the MDEV-32667 patch using debug UB+ASAN builds. No UB/ASAN traces were observed anymore,
however other symptoms remain as mentioned in MDEV-32667:
SET GLOBAL innodb_stats_persistent=0; |
CREATE TABLE t (c INT) ENGINE=InnoDB; |
XA START 'a'; |
UPDATE mysql.innodb_index_stats SET stat_value=0; |
SET GLOBAL innodb_stats_persistent=DEFAULT; |
SELECT * FROM t; |
SET GLOBAL table_open_cache=DEFAULT; |
INSERT INTO t VALUES (0,0,0,0,0,0); |
Leads to:
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CS 10.5.28 7afee25b08bf801a97ce3246bb604d388572eace (Debug, UBASAN) |
10.5.28-dbg>INSERT INTO t VALUES (0,0,0,0,0,0);
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ERROR 1136 (21S01): Column count doesn't match value count at row 1
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CS 10.5.28 7afee25b08bf801a97ce3246bb604d388572eace (Debug, UBASAN) |
2024-11-09 6:57:59 0 [Note] /test/UBASAN_MD091124-mariadb-10.5.28-linux-x86_64-dbg/bin/mariadbd: ready for connections.
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Version: '10.5.28-MariaDB-debug' socket: '/test/UBASAN_MD091124-mariadb-10.5.28-linux-x86_64-dbg/socket.sock' port: 11057 MariaDB Server
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2024-11-09 6:58:03 4 [ERROR] InnoDB: Cannot save index statistics for table `test`.`t`, index `GEN_CLUST_INDEX`, stat name "n_diff_pfx01": Lock wait timeout
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And in 10.6:
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CS 10.6.21 074831ec61e8cd2c003df1a7316f202cbb902474 (Debug, UBASAN) |
10.6.21-dbg>INSERT INTO t VALUES (0,0,0,0,0,0);
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ERROR 1136 (21S01): Column count doesn't match value count at row
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With no error in the server log, however the ERROR 1136 takes about 50 seconds to show. The same delay continues in higher versions (tested 11.2 and 11.7).
This testcase:
CREATE TABLE t (c INT) ENGINE=InnoDB; |
INSERT INTO t VALUES (0),(0); |
INSERT INTO t VALUES (0),(0); |
SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE; |
XA START 'a', 'b'; |
INSERT INTO t VALUES (0),(0); |
SELECT * FROM mysql.innodb_index_stats WHERE table_name='t'; |
SELECT SLEEP(10); |
Leads to the same outcome on 10.5:
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CS 10.5.28 7afee25b08bf801a97ce3246bb604d388572eace (Debug, UBASAN) |
2024-11-09 7:07:41 0 [ERROR] InnoDB: Cannot save index statistics for table `test`.`t`, index `GEN_CLUST_INDEX`, stat name "n_diff_pfx01": Lock wait timeout
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With no observable issues on 10.6. The same results (10.5 error, no observable 10.6 issues) apply to this testcase:
CREATE TABLE t (c1 INT,c2 INT,c3 INT); |
INSERT INTO t VALUES (0,0,0),(0,0,0),(0,0,0); |
INSERT INTO t VALUES (0,0,0),(0,0,0),(0,0,0); |
XA START 'a'; |
SELECT SLEEP(5); |
DELETE FROM mysql.innodb_table_stats; |
SELECT SLEEP(7); |
I also tested the first testcase on regular (non-SAN) 10.5 and 10.6 builds, and the results were indentical, i.e. error for 10.5 and long wait for the INSERT on 10.6.
Attachments
Issue Links
- split from
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- Closed
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