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MDEV-26: Global transaction ID.

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Fix things so that a master can switch with MASTER_GTID_POS=AUTO to a slave
that was previously running with log_slave_updates=0, by looking into the
slave replication state on the master when the slave requests something not
present in the binlog.

Be a bit more strict about what position the slave can ask for, to avoid some
easy-to-hit misconfiguration errors.

Start over with seq_no counter when RESET MASTER.
This commit is contained in:
unknown 2013-03-18 15:09:36 +01:00
commit 9d9ddad759
16 changed files with 843 additions and 145 deletions
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4
sql/rpl_gtid.h
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@ -89,6 +89,7 @@ struct rpl_slave_state
bool in_transaction);
uint64 next_subid(uint32 domain_id);
int tostring(String *dest, rpl_gtid *extra_gtids, uint32 num_extra);
bool domain_to_gtid(uint32 domain_id, rpl_gtid *out_gtid);
int load(THD *thd, char *state_from_master, size_t len, bool reset);
bool is_empty();
@ -135,12 +136,13 @@ struct rpl_binlog_state
void reset();
int update(const struct rpl_gtid *gtid);
uint32 seq_no_from_state();
uint64 seq_no_from_state();
int write_to_iocache(IO_CACHE *dest);
int read_from_iocache(IO_CACHE *src);
uint32 count();
int get_gtid_list(rpl_gtid *gtid_list, uint32 list_size);
int get_most_recent_gtid_list(rpl_gtid **list, uint32 *size);
rpl_gtid *find(uint32 domain_id, uint32 server_id);
};