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Code Activity

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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28
mysql-test/suite/binlog/r/binlog_mysqlbinlog_row_trans.result
View File

@@ -142,7 +142,7 @@ 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=#/*!*/;
@@ -162,7 +162,7 @@ c2 VARCHAR(20)
#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 (
c1 INT,
@@ -242,7 +242,7 @@ COMMIT/*!*/;
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-4 ddl
/*!100001 SET @@session.gtid_seq_no=4*//*!*/;
# 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/*!*/;
TRUNCATE TABLE t1
/*!*/;
@@ -250,7 +250,7 @@ TRUNCATE TABLE t1
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-5 ddl
/*!100001 SET @@session.gtid_seq_no=5*//*!*/;
# 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/*!*/;
TRUNCATE TABLE t1
/*!*/;
@@ -280,7 +280,7 @@ START TRANSACTION
### @2='varchar-3' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
# Number of rows: 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/*!*/;
COMMIT
/*!*/;
@@ -319,7 +319,7 @@ START TRANSACTION
### @2='varchar-3' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
# Number of rows: 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/*!*/;
COMMIT
/*!*/;
@@ -341,7 +341,7 @@ START TRANSACTION
### @2='varchar-2' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
# Number of rows: 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>
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
@@ -418,7 +418,7 @@ COMMIT/*!*/;
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-10 ddl
/*!100001 SET @@session.gtid_seq_no=10*//*!*/;
# 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/*!*/;
TRUNCATE TABLE t1
/*!*/;
@@ -426,7 +426,7 @@ TRUNCATE TABLE t1
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-11 ddl
/*!100001 SET @@session.gtid_seq_no=11*//*!*/;
# 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/*!*/;
TRUNCATE TABLE t2
/*!*/;
@@ -456,7 +456,7 @@ START TRANSACTION
### @2='varchar-3' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
# Number of rows: 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/*!*/;
COMMIT
/*!*/;
@@ -495,7 +495,7 @@ START TRANSACTION
### @2='varchar-3' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
# Number of rows: 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/*!*/;
COMMIT
/*!*/;
@@ -517,7 +517,7 @@ START TRANSACTION
### @2='varchar-2' /* VARSTRING(20) meta=20 nullable=1 is_null=0 */
# Number of rows: 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>
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
@@ -525,7 +525,7 @@ COMMIT
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-15 ddl
/*!100001 SET @@session.gtid_seq_no=15*//*!*/;
# 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/*!*/;
TRUNCATE TABLE t1
/*!*/;
@@ -533,7 +533,7 @@ TRUNCATE TABLE t1
#010909 4:46:40 server id 1 end_log_pos # CRC32 XXX GTID 0-1-16 ddl
/*!100001 SET @@session.gtid_seq_no=16*//*!*/;
# 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/*!*/;
TRUNCATE TABLE t2
/*!*/;