Bug #16567 binlog_format option does not show when doing ./mysqd --help --verbose
Implementing this feature connected to wl#3368 mixed binlog_format default. Supplied by my.cnf or explicitly in command line option gets be displayed. When not supplied `(No default value)' is displayed, even though --log-bin might be supplied. The option is different object from @@global.binlog_format variable. The default `mixed' for the latter is dependant on presence of `--log-bin' option, otherwise the value of the var is set to NULL (undefined): var := opt | MIXED when binlog-in-use var := NULL otherwise (no binlog, no format) Comments on NDB and mixed format updated, also dependency the option on --log-bin aka binlog-in-use is worded. Making t/rpl_switch_stm_row_mixed.test to interprete DEFAULT for binlog_format as MIXED. Comments on what the test covers are added. todo/fixme: turning @@global.binlog_format to be read-only when it's set to NULL (no binlog). todo/fixme: options dependacy (acyclic) graph, particularly to solve a task of setting defaults values for the leaf nodes only when parents' nodes are set.
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