Flush queries being written to the binary log

[Eric Bergen]

Hi,

I've noticed that all the flush commands (except logs, ironically) are
written to the binary log. I thought the general idea of the binary
log was to only write things that modify data. I also noticed that the
global read lock only applies to tables and not the binary log. In
5.0.51 a flush is written to the binlog even if there is a global read
lock. What are the guidelines for things being written to the binary
log?

Thanks,

Eric

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