database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

MDEV-19526 heap number overflow on innodb_page_size=64k

Browse Source 
InnoDB only reserves 13 bits for the heap number in the record header,
limiting the heap number to be at most 8191. But, when using
innodb_page_size=64k and secondary index records of 7 bytes each,
it is possible to exceed the maximum heap number.

btr_cur_optimistic_insert(): Let the operation fail if the
maximum number of records would be exceeded.

page_mem_alloc_heap(): Move to the same compilation unit with the
only caller, and let the operation fail if the maximum heap number
has been allocated already.
This commit is contained in:
Marko Mäkelä
2020-08-12 18:21:53 +03:00
parent 7ad4709a3b
commit efd8af535a
10 changed files with 139 additions and 122 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
mysql-test/suite/innodb/r/innodb-64k.result
View File

@ -1084,3 +1084,10 @@ update t2 set col145=@b;
COMMIT;
drop table t2;
DROP TABLE t1;
#
# MDEV-19526 heap number overflow
#
CREATE TABLE t1(a SMALLINT NOT NULL UNIQUE AUTO_INCREMENT, KEY(a))
ENGINE=InnoDB;
INSERT INTO t1 (a) SELECT seq FROM seq_1_to_8191;
DROP TABLE t1;

10
mysql-test/suite/innodb/t/innodb-64k.test
View File

@ -2,6 +2,7 @@
# Tests for setting innodb-page-size=64k;
--source include/have_innodb.inc
--source include/have_innodb_64k.inc
--source include/have_sequence.inc
call mtr.add_suppression("InnoDB: Warning: innodb_page_size has been changed from default value *");
call mtr.add_suppression("InnoDB: Resizing redo log from *");
@ -650,6 +651,15 @@ COMMIT;
drop table t2;
DROP TABLE t1;
--echo #
--echo # MDEV-19526 heap number overflow
--echo #
CREATE TABLE t1(a SMALLINT NOT NULL UNIQUE AUTO_INCREMENT, KEY(a))
ENGINE=InnoDB;
INSERT INTO t1 (a) SELECT seq FROM seq_1_to_8191;
DROP TABLE t1;
#
# restore environment to the state it was before this test execution
#