Bug #94487 Wrong default value for max_binlog_cache_size

• Submitted: 27 Feb 2019 8:17
• Modified: 27 Feb 2019 17:19
• Reporter: Evon Xiang
• Status: Verified
• Category: MySQL Server: Options
• Severity: S3 (Non-critical)
• Version: 8.0, 5.6, 5.7
• OS: Any
• CPU Architecture: Any

[27 Feb 2019 8:17] Evon Xiang

Description:
In MySQL 8.0 documents (https://dev.mysql.com/doc/refman/8.0/en/replication-options-binary-log.html#sysvar_max_bin...), the option max_binlog_cache_size is described as 

"The maximum recommended value is 4GB; this is due to the fact that MySQL currently cannot work with binary log positions greater than 4GB."

However, the default value 18446744073709551615, which is not actually supported.

How to repeat:
No need

[27 Feb 2019 8:56] MySQL Verification Team

Hello Evon Xiang,

Thank you for the report!

regards,
Umesh

[27 Feb 2019 17:19] Evon Xiang

No problem, thanks for quick response, Umesh!