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BUG#23171: Illegal group log position

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Tail fixes after re-applying patches to older version of clone.
This commit is contained in:
mats@romeo.(none)
2007-03-22 08:32:41 +01:00
parent 3920f529ea
commit 2ee007ba9d
6 changed files with 356 additions and 150 deletions
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266
sql/log_event.h
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@ -558,6 +558,33 @@ typedef struct st_print_event_info
class Log_event
{
public:
/**
Enumeration of what kinds of skipping (and non-skipping) that can
occur when the slave executes an event.
@see shall_skip
@see do_shall_skip
*/
enum enum_skip_reason {
/**
Don't skip event.
*/
EVENT_SKIP_NOT,
/**
Skip event by ignoring it.
This means that the slave skip counter will not be changed.
*/
EVENT_SKIP_IGNORE,
/**
Skip event and decrease skip counter.
*/
EVENT_SKIP_COUNT
};
/*
The offset in the log where this event originally appeared (it is
preserved in relay logs, making SHOW SLAVE STATUS able to print
@ -633,40 +660,6 @@ public:
#ifdef HAVE_REPLICATION
int net_send(Protocol *protocol, const char* log_name, my_off_t pos);
/**
Execute the event to change the database and update the binary
log coordinates.
@param rli Pointer to relay log information
@retval 0 The event was successfully executed.
@retval errno Error code when the execution failed
*/
int exec_event(RELAY_LOG_INFO *rli)
{
// !!! Just chaining the calls in this first patch
return apply_event_impl(rli);
}
/**
Skip the event by just updating the binary log coordinates.
@param rli Pointer to relay log information
@retval 0 The event was successfully executed.
@retval errno Error code when the execution failed
*/
int skip_event(RELAY_LOG_INFO *rli)
{
// !!! Nothing yet. This is just the reorgainization patch.
return 0;
}
/*
pack_info() is used by SHOW BINLOG EVENTS; as print() it prepares and sends
a string to display to the user, so it resembles print().
@ -747,36 +740,125 @@ public:
/* returns the human readable name of the event's type */
const char* get_type_str();
protected: /* !!! Protected in this patch to allow old usage */
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
public:
/**
Apply the event to the database.
This function represents the public interface for applying an
event.
@see do_apply_event
*/
int apply_event(RELAY_LOG_INFO const *rli) {
return do_apply_event(rli);
}
/**
Update the relay log position.
This function represents the public interface for "stepping over"
the event and will update the relay log information.
@see do_update_pos
*/
int update_pos(RELAY_LOG_INFO *rli)
{
return do_update_pos(rli);
}
/**
Decide if the event shall be skipped, and the reason for skipping
it.
@see do_shall_skip
*/
enum_skip_reason shall_skip(RELAY_LOG_INFO *rli)
{
return do_shall_skip(rli);
}
protected:
/**
Primitive to apply an event to the database.
This is where the change to the database is made.
@note The primitive is protected instead of private, since there
is a hierarchy of actions to be performed in some cases.
@see Format_description_log_event::do_apply_event()
@param rli Pointer to relay log info structure
@retval 0 Event applied successfully
@retval errno Error code if event application failed
*/
virtual int apply_event_impl(RELAY_LOG_INFO *rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli)
{
return 0; /* Default implementation does nothing */
}
/**
Advance binary log coordinates.
Advance relay log coordinates.
This function is called to advance the binary log or relay log
coordinates to just after the event.
This function is called to advance the relay log coordinates to
just after the event. It is essential that both the relay log
coordinate and the group log position is updated correctly, since
this function is used also for skipping events.
Normally, each implementation of do_update_pos() shall:
- Update the event position to refer to the position just after
the event.
- Update the group log position to refer to the position just
after the event <em>if the event is last in a group</em>
@param rli Pointer to relay log info structure
@retval 0 Coordinates changed successfully
@retval errno Error code if advancing failed
@retval errno Error code if advancing failed (usually just
1). Observe that handler errors are returned by the
do_apply_event() function, and not by this one.
*/
virtual int advance_coord_impl(RELAY_LOG_INFO *rli)
{
// !!! Dummy implementation for this patch only
return 0;
}
virtual int do_update_pos(RELAY_LOG_INFO *rli);
/**
Decide if this event shall be skipped or not and the reason for
skipping it.
The default implementation decide that the event shall be skipped
if either:
- the server id of the event is the same as the server id of the
server and <code>rli->replicate_same_server_id</code> is true,
or
- if <code>rli->slave_skip_counter</code> is greater than zero.
@see do_apply_event
@see do_update_pos
@retval Log_event::EVENT_SKIP_NOT
The event shall not be skipped and should be applied.
@retval Log_event::EVENT_SKIP_IGNORE
The event shall be skipped by just ignoring it, i.e., the slave
skip counter shall not be changed. This happends if, for example,
the originating server id of the event is the same as the server
id of the slave.
@retval Log_event::EVENT_SKIP_COUNT
The event shall be skipped because the slave skip counter was
non-zero. The caller shall decrease the counter by one.
*/
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO *rli);
#endif
};
@ -818,8 +900,8 @@ public:
uint16 error_code;
ulong thread_id;
/*
For events created by Query_log_event::apply_event_impl (and
Load_log_event::apply_event_impl()) we need the *original* thread
For events created by Query_log_event::do_apply_event (and
Load_log_event::do_apply_event()) we need the *original* thread
id, to be able to log the event with the original (=master's)
thread id (fix for BUG#1686).
*/
@ -913,8 +995,10 @@ public:
public: /* !!! Public in this patch to allow old usage */
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
int apply_event_impl(RELAY_LOG_INFO* rli,
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
int do_apply_event(RELAY_LOG_INFO const *rli,
const char *query_arg,
uint32 q_len_arg);
#endif /* HAVE_REPLICATION */
@ -981,7 +1065,7 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const* rli);
#endif
};
@ -1086,13 +1170,13 @@ public:
public: /* !!! Public in this patch to allow old usage */
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli)
virtual int do_apply_event(RELAY_LOG_INFO const* rli)
{
return apply_event_impl(thd->slave_net,rli,0);
return do_apply_event(thd->slave_net,rli,0);
}
int apply_event_impl(NET* net, RELAY_LOG_INFO* rli,
bool use_rli_only_for_errors);
int do_apply_event(NET *net, RELAY_LOG_INFO const *rli,
bool use_rli_only_for_errors);
#endif
};
@ -1171,9 +1255,20 @@ public:
}
virtual bool is_artificial_event() { return artificial_event; }
protected: /* !!! Protected in this patch to allow old usage */
protected:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO*)
{
/*
Events from ourself should be skipped, but they should not
decrease the slave skip counter.
*/
if (this->server_id == ::server_id)
return Log_event::EVENT_SKIP_IGNORE;
else
return Log_event::EVENT_SKIP_NOT;
}
#endif
};
@ -1222,9 +1317,11 @@ public:
return FORMAT_DESCRIPTION_HEADER_LEN;
}
private:
protected:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO *rli);
#endif
};
@ -1266,7 +1363,9 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO *rli);
#endif
};
@ -1310,7 +1409,9 @@ class Rand_log_event: public Log_event
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO *rli);
#endif
};
@ -1351,7 +1452,7 @@ class Xid_log_event: public Log_event
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
#endif
};
@ -1396,7 +1497,9 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO *rli);
#endif
};
@ -1425,7 +1528,18 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO *rli)
{
/*
Events from ourself should be skipped, but they should not
decrease the slave skip counter.
*/
if (this->server_id == ::server_id)
return Log_event::EVENT_SKIP_IGNORE;
else
return Log_event::EVENT_SKIP_NOT;
}
#endif
};
@ -1474,7 +1588,8 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
virtual enum_skip_reason do_shall_skip(RELAY_LOG_INFO *rli);
#endif
};
@ -1546,7 +1661,7 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
#endif
};
@ -1600,7 +1715,7 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
#endif
};
@ -1640,7 +1755,7 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
#endif
};
@ -1679,7 +1794,7 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
#endif
};
@ -1771,7 +1886,7 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
#endif
};
@ -1880,7 +1995,8 @@ public:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
virtual int do_update_pos(RELAY_LOG_INFO *rli);
#endif
#ifndef MYSQL_CLIENT
@ -2037,7 +2153,7 @@ protected:
private:
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
virtual int apply_event_impl(RELAY_LOG_INFO* rli);
virtual int do_apply_event(RELAY_LOG_INFO const *rli);
/*
Primitive to prepare for a sequence of row executions.
@ -2086,7 +2202,7 @@ private:
RETURN VALUE
Error code, if something went wrong, 0 otherwise.
*/
virtual int do_prepare_row(THD*, RELAY_LOG_INFO*, TABLE*,
virtual int do_prepare_row(THD*, RELAY_LOG_INFO const*, TABLE*,
char const *row_start, char const **row_end) = 0;
/*
@ -2157,7 +2273,7 @@ private:
virtual int do_before_row_operations(TABLE *table);
virtual int do_after_row_operations(TABLE *table, int error);
virtual int do_prepare_row(THD*, RELAY_LOG_INFO*, TABLE*,
virtual int do_prepare_row(THD*, RELAY_LOG_INFO const*, TABLE*,
char const *row_start, char const **row_end);
virtual int do_exec_row(TABLE *table);
#endif
@ -2222,7 +2338,7 @@ private:
virtual int do_before_row_operations(TABLE *table);
virtual int do_after_row_operations(TABLE *table, int error);
virtual int do_prepare_row(THD*, RELAY_LOG_INFO*, TABLE*,
virtual int do_prepare_row(THD*, RELAY_LOG_INFO const*, TABLE*,
char const *row_start, char const **row_end);
virtual int do_exec_row(TABLE *table);
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */
@ -2293,7 +2409,7 @@ private:
virtual int do_before_row_operations(TABLE *table);
virtual int do_after_row_operations(TABLE *table, int error);
virtual int do_prepare_row(THD*, RELAY_LOG_INFO*, TABLE*,
virtual int do_prepare_row(THD*, RELAY_LOG_INFO const*, TABLE*,
char const *row_start, char const **row_end);
virtual int do_exec_row(TABLE *table);
#endif