Why is the column name of the get table empty replication

[sidongsheng]

=== TableMapEvent ===
Date: 2020-08-13 09:18:08
Log position: 566
Event size: 73
TableID: 108
TableID size: 6
Flags: 1
Schema: yitang
Table: yt_member
Column count: 9
Column type:
00000000 03 0f f6 f6 01 11 11 0f 03 |.........|
NULL bitmap:
00000000 f4 00 |..|
Signedness bitmap:
Default charset: []
Column charset: []
Set str value: []
Enum str value: []
Column name: []
Geometry type: []
Primary key: []
Primary key prefix: []
Enum/set default charset: []
Enum/set column charset: []
UnsignedMap: map[int]bool(nil)
CollationMap: map[int]uint64(nil)
EnumSetCollationMap: map[int]uint64(nil)
EnumStrValueMap: map[int][]string(nil)
SetStrValueMap: map[int][]string(nil)
GeometryTypeMap: map[int]uint64(nil)
mysql version: 5.7.30-log MySQL Community Server (GPL)

[Succy]

Me too！Do you have any good solutions?

[IvoGoman]

I just stumbled across the same issue and found out that by default both MariaDB and MySQL do not log the whole metadata for RowsEvents.
The full metadata including the ColumnNames has to be enabled see:
https://dev.mysql.com/doc/refman/8.0/en/replication-options-binary-log.html#sysvar_binlog_row_metadata
https://mariadb.com/kb/en/replication-and-binary-log-system-variables/#binlog_row_metadata

[atercattus]

It would be nice to write about this in the documentation. PR welcome :)

[IvoGoman]

I have opened #611 to add some documentation in the TableMapEvent, RowsEvent to describe the behavior of row-based logging with regard to binlog_row_metadata and binlog_row_image.