| Commit message (Collapse) | Author | Age | Files | Lines |
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in MDEV-23855
fil_node_open_file_low() tries to close files from the top of
fil_system.space_list if the number of opened files is exceeded.
It invokes fil_space_t::try_to_close(), which iterates the list searching
for the first opened space. Then it just closes the space, leaving it in
the same position in fil_system.space_list.
On heavy files opening, like during 'SHOW TABLE STATUS ...' execution,
if the number of opened files limit is reached,
fil_space_t::try_to_close() iterates more and more closed spaces before
reaching any opened space for each fil_node_open_file_low() call. What
causes performance regression if the number of spaces is big enough.
The fix is to keep opened spaces at the top of fil_system.space_list,
and move closed files at the end of the list.
For this purpose fil_space_t::space_list_last_opened pointer is
introduced. It points to the last inserted opened space in
fil_space_t::space_list. When space is opened, it's inserted to the
position just after the pointer points to in fil_space_t::space_list to
preserve the logic, inroduced in MDEV-23855. Any closed space is added
to the end of fil_space_t::space_list.
As opened spaces are located at the top of fil_space_t::space_list,
fil_space_t::try_to_close() finds opened space faster.
There can be the case when opened and closed spaces are mixed in
fil_space_t::space_list if fil_system.freeze_space_list was set during
fil_node_open_file_low() execution. But this should not cause any error,
as fil_space_t::try_to_close() still iterates spaces in the list.
There is no need in any test case for the fix, as it does not change any
functionality, but just fixes performance regression.
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- Change to use 'mariadbd' instead of 'mysqld' in help texts and other
visible places.
- Start binary 'mariadbd' instead of 'mysqld'. This will remove a warning
in 11.0 when running mysql_install_db.
- Use my_print_defaults --mariadbd instead of --mysqld
- Use --skip-log-error if the user don't have access to log-error file.
This it needed to allow mysql_install_db to work silenty for users that
has not write access to /var/log.
Other things:
- Updated my_print_defaults to support --mariadbd
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Charset names in the 'languages' line are not used any more.
Removing to avoid confusion.
All messages in errmsg-utf8.txt are in utf8 now.
Charset names should have been removed in MySQL-5.5 during: https://dev.mysql.com/worklog/task/?id=751
Bump version number.
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Renaming the default MariaDB backup directory from
xtrabackup_backupfiles to mariadb_backup_files.
Renaming files:
- xtrabackup_binlog_info to mariadb_backup_binlog_info
- xtrabackup_checkpoints to mariadb_backup_checkpoints
- xtrabackup_galera_info to mariadb_backup_galera_info
- xtrabackup_info to mariadb_backup_info
- xtrabackup_slave_info to mariadb_backup_slave_info
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on buildbot
The -D flag was not passed to asm compiler, despite SET_PROPERTY(COMPILE_OPTIONS)
The exact reason for that remains unknown. It was not seen with gcc, as
nor was be reproduced on newer CMake.
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'innodb_flush_method=async_unbuffered'
Normalize innodb_flush_method, the same as the service, before
attempting to print it.
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Changing the tool name in the "mariadb-backup --help" output
from "innobackupex" to "mariadb-backup".
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strncat() and strncpy()) with custom safe_strcat() and safe_strcpy() functions
The MariaDB code base uses strcat() and strcpy() in several
places. These are known to have memory safety issues and their usage is
discouraged. Common security scanners like Flawfinder flags them. In MariaDB we
should start using modern and safer variants on these functions.
This is similar to memory issues fixes in 19af1890b56c6c147c296479bb6a4ad00fa59dbb
and 9de9f105b5cb88249acc39af73d32af337d6fd5f but now replace use of strcat()
and strcpy() with safer options strncat() and strncpy().
However, add '\0' forcefully to make sure the result string is correct since
for these two functions it is not guaranteed what new string will be null-terminated.
Example:
size_t dest_len = sizeof(g->Message);
strncpy(g->Message, "Null json tree", dest_len); strncat(g->Message, ":",
sizeof(g->Message) - strlen(g->Message)); size_t wrote_sz = strlen(g->Message);
size_t cur_len = wrote_sz >= dest_len ? dest_len - 1 : wrote_sz;
g->Message[cur_len] = '\0';
All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the BSD-new
license. I am contributing on behalf of my employer Amazon Web Services
-- Reviewer and co-author Vicențiu Ciorbaru <vicentiu@mariadb.org>
-- Reviewer additions:
* The initial function implementation was flawed. Replaced with a simpler
and also correct version.
* Simplified code by making use of snprintf instead of chaining strcat.
* Simplified code by removing dynamic string construction in the first
place and using static strings if possible. See connect storage engine
changes.
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transactions
The user XA commit execution branch was caught not have been covered
with MDEV-21953 fixes.
The XA involved deadlock is resolved now to apply the former fixes
pattern.
Along the fixes the following changes have been implemented.
- MDL lock attribute correction
- dissociation of the externally completed XA from the current
thread's xid_state in the error branches
- cleanup_context() preseves the prepared XA
- wait_for_prior_commit() is relocated to satisfy both
the binlog ON (log-slave-updates and skip-log-bin)
and OFF slave execution branches.
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like where the man page and Debian package put it.
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for consistency
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don't include my_progname in the error message, my_error starts from it
automatically, resulting in, like
/usr/bin/mysqladmin: Notice: /usr/bin/mysqladmin is deprecated and will be removed in a future release, use command 'mariadb-admin'
and remove "Notice" so that the problem description would directly
follow the executable name.
make the check to work when the executable is in the PATH
(so, invoked simply like 'mysql' and thus readlink cannot find it)
fix the check in mysql_install_db and mysql_secure_installation to not
print the warning if the intermediate path contains "mysql" substring
add this message also to
* mysql_waitpid
* mysql_convert_table_format
* mysql_find_rows
* mysql_setpermissions
* mysqlaccess
* mysqld_multi
* mysqld_safe
* mysqldumpslow
* mysqlhotcopy
* mysql_ldb
Closes #2273
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it should now always be
/path/to/exe Ver <tool version> Distrib <server version> for <OS> (<ARCH>)
in all tools and clients
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