Monty 87ee1e75bc MDEV-35643 Add support for MySQL 8.0 binlog events ...

MDEV-29533 Crash when MariaDB is replica of MySQL 8.0

MySQL 8.0 has added the following new events in the MySQL binary log

PARTIAL_UPDATE_ROWS_EVENT
TRANSACTION_PAYLOAD_EVENT
HEARTBEAT_LOG_EVENT_V2

- PARTIAL_UPDATE_ROWS_EVENT is used by MySQL to generate update
  statements using JSON_SET, JSON_REPLACE and JSON_REMOVE to make
  update of JSON columns more efficient.  These events can be
  disabled by setting 'binlog-row-value-options=""'
- TRANSACTION_PAYLOAD_EVENT is used by MySQL to signal that a
  row event is compressed. It an be disably by setting
  'binlog_transaction_compression=0'.
- HEARTBEAT_LOG_EVENT_V2 is written to the binary log many times
  per seconds. It can be ignored by the server.

What this patch does:

- If PARTIAL_UPDATE_ROWS_EVENT or TRANSACTION_PAYLOAD_EVENT is found,
  the server will stop with an error message of how to disable the
  MySQL server to generate such events.
- HEARTBEAT_LOG_EVENT_V2 events are ignored.
- mariadb-binlog will write the name of the new events.
- mariadb-binlog will stop if PARTIAL_UPDATE_ROWS_EVENT or
  TRANSACTION_PAYLOAD_EVENT is found, unless --force is given.
- Fixes a crash in mariadb-binlog if a character set unknown to
  MariaDB is found. (MDEV-29533)

From Kristian Nielsen:
- Add test case for MySQL 8.0 to MariaDB replication and fixed a
  a small typo in post_header_len initialization.

Reviewer: knielsen@mariadb.org

2025-01-05 16:40:11 +02:00

4.3 KiB

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