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authorMonty <monty@mariadb.org>2020-10-15 02:25:57 +0300
committerSergei Golubchik <serg@mariadb.org>2021-05-19 22:54:12 +0200
commit47010ccffa8db1b88883314932e1a0f33ec32bc0 (patch)
tree4536c39f1bc71c82cf78ed2804caa3b2e348e222 /mysql-test/main/mysqld--help.result
parent55c771b4f3e1c8a42f018730f39a26278abcf817 (diff)
downloadmariadb-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.result4
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