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Code Activity

MDEV-19632 Replication aborts with ER_SLAVE_CONVERSION_FAILED upon CREATE ... SELECT in ORACLE mode

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- Adding optional qualifiers to data types:
    CREATE TABLE t1 (a schema.DATE);
  Qualifiers now work only for three pre-defined schemas:

    mariadb_schema
    oracle_schema
    maxdb_schema

  These schemas are virtual (hard-coded) for now, but may turn into real
  databases on disk in the future.

- mariadb_schema.TYPE now always resolves to a true MariaDB data
  type TYPE without sql_mode specific translations.

- oracle_schema.DATE translates to MariaDB DATETIME.

- maxdb_schema.TIMESTAMP translates to MariaDB DATETIME.

- Fixing SHOW CREATE TABLE to use a qualifier for a data type TYPE
  if the current sql_mode translates TYPE to something else.

The above changes fix the reported problem, so this script:

    SET sql_mode=ORACLE;
    CREATE TABLE t2 AS SELECT mariadb_date_column FROM t1;

is now replicated as:

    SET sql_mode=ORACLE;
    CREATE TABLE t2 (mariadb_date_column mariadb_schema.DATE);

and the slave can unambiguously treat DATE as the true MariaDB DATE
without ORACLE specific translation to DATETIME.

Similar,

    SET sql_mode=MAXDB;
    CREATE TABLE t2 AS SELECT mariadb_timestamp_column FROM t1;

is now replicated as:

    SET sql_mode=MAXDB;
    CREATE TABLE t2 (mariadb_timestamp_column mariadb_schema.TIMESTAMP);

so the slave treats TIMESTAMP as the true MariaDB TIMESTAMP
without MAXDB specific translation to DATETIME.
This commit is contained in:
Alexander Barkov
2020-07-08 08:31:32 +04:00
parent a8458a2345
commit d63631c3fa
28 changed files with 860 additions and 60 deletions
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34
mysql-test/suite/compat/maxdb/rpl_mariadb_timestamp.test Normal file
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--source include/have_binlog_format_row.inc
--source include/master-slave.inc
--echo #
--echo # MDEV-19632 Replication aborts with ER_SLAVE_CONVERSION_FAILED upon CREATE ... SELECT in ORACLE mode
--echo #
SET timestamp=UNIX_TIMESTAMP('2001-01-01 10:00:00');
SET sql_mode=DEFAULT;
CREATE TABLE t1 (a TIMESTAMP);
INSERT INTO t1 VALUES (NULL);
INSERT INTO t1 VALUES ('2001-01-01 10:20:30');
SET sql_mode=MAXDB;
CREATE TABLE t2 SELECT * FROM t1;
SET timestamp=DEFAULT;
--let $binlog_file = LAST
source include/show_binlog_events.inc;
--sync_slave_with_master
SELECT * FROM t1;
SET sql_mode=DEFAULT;
SHOW CREATE TABLE t1;
SHOW CREATE TABLE t2;
SET sql_mode=MAXDB;
SHOW CREATE TABLE t1;
SHOW CREATE TABLE t2;
--connection master
DROP TABLE t1, t2;
--source include/rpl_end.inc