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MDEV-23842 Atomic RENAME TABLE

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- 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.
This commit is contained in:
Monty
2020-10-15 02:25:57 +03:00
committed by Sergei Golubchik
parent 55c771b4f3
commit 47010ccffa
69 changed files with 4121 additions and 1403 deletions
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12
mysql-test/suite/binlog/r/binlog_mysqlbinlog_row_innodb.result
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@@ -2264,7 +2264,7 @@ ROLLBACK/*!*/;
/*!100001 SET @@session.server_id=1*//*!*/;
/*!100001 SET @@session.gtid_seq_no=1*//*!*/;
# at #
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0 xid=<xid>
use `test`/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.pseudo_thread_id=#/*!*/;
@@ -5273,7 +5273,7 @@ ROLLBACK/*!*/;
/*!100001 SET @@session.server_id=1*//*!*/;
/*!100001 SET @@session.gtid_seq_no=1*//*!*/;
# at #
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0 xid=<xid>
use `test`/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.pseudo_thread_id=#/*!*/;
@@ -5673,7 +5673,7 @@ ROLLBACK/*!*/;
/*!100001 SET @@session.server_id=1*//*!*/;
/*!100001 SET @@session.gtid_seq_no=1*//*!*/;
# at #
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0 xid=<xid>
use `test`/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.pseudo_thread_id=#/*!*/;
@@ -5694,7 +5694,7 @@ c_1_n INT -- row number
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-2 ddl
/*!100001 SET @@session.gtid_seq_no=2*//*!*/;
# at #
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0 xid=<xid>
SET TIMESTAMP=1000000000/*!*/;
CREATE TABLE t2 (
c_2_1 DATE,
@@ -5706,7 +5706,7 @@ c_2_n INT -- row number
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-3 ddl
/*!100001 SET @@session.gtid_seq_no=3*//*!*/;
# at #
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0 xid=<xid>
SET TIMESTAMP=1000000000/*!*/;
CREATE TABLE t3 (
c_3_1 DATE,
@@ -6311,7 +6311,7 @@ ROLLBACK/*!*/;
/*!100001 SET @@session.server_id=1*//*!*/;
/*!100001 SET @@session.gtid_seq_no=1*//*!*/;
# at #
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX Query thread_id=# exec_time=# error_code=0 xid=<xid>
use `test`/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.pseudo_thread_id=#/*!*/;