403Webshell
Server IP : 104.21.38.3  /  Your IP : 162.158.190.14
Web Server : Apache
System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64
User : www ( 1000)
PHP Version : 7.4.33
Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : OFF  |  Sudo : ON  |  Pkexec : ON
Directory :  /www/server/mysql/src/mysql-test/suite/innodb/t/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /www/server/mysql/src/mysql-test/suite/innodb/t/index_tree_operation.test
-- source include/have_innodb.inc
-- source include/have_innodb_16k.inc
--echo #
--echo # Bug#15923864 (Bug#67718):
--echo #  INNODB DRASTICALLY UNDER-FILLS PAGES IN CERTAIN CONDITIONS
--echo #
# InnoDB should try to insert to the next page before split,
# if the insert record for split_and_insert is last of the page.
# Otherwise, the follwing records 999,998,997 cause each page per record.
#

--disable_query_log
SET @old_innodb_file_per_table = @@innodb_file_per_table;
--enable_query_log

SET GLOBAL innodb_file_per_table=ON;

CREATE TABLE t1 (a BIGINT PRIMARY KEY, b VARCHAR(4096)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (0, REPEAT('a', 4096));
INSERT INTO t1 VALUES (1000, REPEAT('a', 4096));
INSERT INTO t1 VALUES (1001, REPEAT('a', 4096));
INSERT INTO t1 VALUES (1002, REPEAT('a', 4096));
INSERT INTO t1 VALUES (1, REPEAT('a', 4096));
INSERT INTO t1 VALUES (2, REPEAT('a', 4096));

# | 0, 1, 2 | 1000, 1001, 1002|

SELECT page_number, number_records
FROM information_schema.innodb_sys_tablespaces s1,
information_schema.innodb_buffer_page s2
WHERE s1.space = s2.space AND name = 'test/t1'
AND page_type = "INDEX" ORDER BY page_number;

INSERT INTO t1 VALUES (999, REPEAT('a', 4096));

# try to insert '999' to the end of '0,1,2' page, but no space
# the next '1000,1001,1002' page has also no space.
# | 0, 1, 2 | 999 | 1000, 1001, 1002|

SELECT page_number, number_records
FROM information_schema.innodb_sys_tablespaces s1,
information_schema.innodb_buffer_page s2
WHERE s1.space = s2.space AND name = 'test/t1'
AND page_type = "INDEX" ORDER BY page_number;


INSERT INTO t1 VALUES (998, REPEAT('a', 4096));

# try to insert to the end of '0,1,2' page, but no space
# the next '998' page has space.
# | 0, 1, 2 | 998, 999 | 1000, 1001, 1002|

SELECT page_number, number_records
FROM information_schema.innodb_sys_tablespaces s1,
information_schema.innodb_buffer_page s2
WHERE s1.space = s2.space AND name = 'test/t1'
AND page_type = "INDEX" ORDER BY page_number;

INSERT INTO t1 VALUES (997, REPEAT('a', 4096));

# same
# | 0, 1, 2 | 997, 998, 999 | 1000, 1001, 1002|

SELECT page_number, number_records
FROM information_schema.innodb_sys_tablespaces s1,
information_schema.innodb_buffer_page s2
WHERE s1.space = s2.space AND name = 'test/t1'
AND page_type = "INDEX" ORDER BY page_number;

DROP TABLE t1;

--disable_query_log
SET GLOBAL innodb_file_per_table = @old_innodb_file_per_table;
--enable_query_log

Youez - 2016 - github.com/yon3zu
LinuXploit