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author | Monty <monty@mariadb.org> | 2020-10-15 02:25:57 +0300 |
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committer | Sergei Golubchik <serg@mariadb.org> | 2021-05-19 22:54:12 +0200 |
commit | 47010ccffa8db1b88883314932e1a0f33ec32bc0 (patch) | |
tree | 4536c39f1bc71c82cf78ed2804caa3b2e348e222 /mysql-test/main/mysqld--help.result | |
parent | 55c771b4f3e1c8a42f018730f39a26278abcf817 (diff) | |
download | mariadb-git-47010ccffa8db1b88883314932e1a0f33ec32bc0.tar.gz |
MDEV-23842 Atomic RENAME TABLE
- Major rewrite of ddl_log.cc and ddl_log.h
- ddl_log.cc described in the beginning how the recovery works.
- ddl_log.log has unique signature and is dynamic. It's easy to
add more information to the header and other ddl blocks while still
being able to execute old ddl entries.
- IO_SIZE for ddl blocks is now dynamic. Can be changed without affecting
recovery of old logs.
- Code is more modular and is now usable outside of partition handling.
- Renamed log file to dll_recovery.log and added option --log-ddl-recovery
to allow one to specify the path & filename.
- Added ddl_log_entry_phase[], number of phases for each DDL action,
which allowed me to greatly simply set_global_from_ddl_log_entry()
- Changed how strings are stored in log entries, which allows us to
store much more information in a log entry.
- ddl log is now always created at start and deleted on normal shutdown.
This simplices things notable.
- Added probes debug_crash_here() and debug_simulate_error() to simply
crash testing and allow crash after a given number of times a probe
is executed. See comments in debug_sync.cc and rename_table.test for
how this can be used.
- Reverting failed table and view renames is done trough the ddl log.
This ensures that the ddl log is tested also outside of recovery.
- Added helper function 'handler::needs_lower_case_filenames()'
- Extend binary log with Q_XID events. ddl log handling is using this
to check if a ddl log entry was logged to the binary log (if yes,
it will be deleted from the log during ddl_log_close_binlogged_events()
- If a DDL entry fails 3 time, disable it. This is to ensure that if
we have a crash in ddl recovery code the server will not get stuck
in a forever crash-restart-crash loop.
mysqltest.cc changes:
- --die will now replace $variables with their values
- $error will contain the error of the last failed statement
storage engine changes:
- maria_rename() was changed to be more robust against crashes during
rename.
Diffstat (limited to 'mysql-test/main/mysqld--help.result')
-rw-r--r-- | mysql-test/main/mysqld--help.result | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mysql-test/main/mysqld--help.result b/mysql-test/main/mysqld--help.result index 6c063346809..99d84bb3457 100644 --- a/mysql-test/main/mysqld--help.result +++ b/mysql-test/main/mysqld--help.result @@ -476,6 +476,9 @@ The following specify which files/extra groups are read (specified before remain ALWAYS use row-based binary logging, the security issues do not exist and the binary logging cannot break, so you can safely set this to TRUE + --log-ddl-recovery=name + Path to file used for recovery of DDL statements after a + crash --log-disabled-statements=name Don't log certain types of statements to general log. Any combination of: slave, sp @@ -1581,6 +1584,7 @@ log-bin-compress FALSE log-bin-compress-min-len 256 log-bin-index (No default value) log-bin-trust-function-creators FALSE +log-ddl-recovery ddl_recovery.log log-disabled-statements sp log-error log-isam myisam.log |