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Commit 66cb43d2 authored by sasha@mysql.sashanet.com's avatar sasha@mysql.sashanet.com
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fixed replication assert failure ( found by Jeremy Zawodny)

parent e497f1c2
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Showing with 35 additions and 27 deletions
sql/slave.cc
View file @ 66cb43d2
......@@ -29,6 +29,8 @@
bool use_slave_mask = 0;
MY_BITMAP slave_error_mask;
typedef bool (*CHECK_KILLED_FUNC)(THD*,void*);
volatile bool slave_sql_running = 0, slave_io_running = 0;
char* slave_load_tmpdir = 0;
MASTER_INFO main_mi;
......@@ -58,14 +60,15 @@ static int process_io_rotate(MASTER_INFO* mi, Rotate_log_event* rev);
static int process_io_create_file(MASTER_INFO* mi, Create_file_log_event* cev);
static int queue_old_event(MASTER_INFO* mi, const char* buf,
uint event_len);
static inline bool slave_killed(THD* thd,MASTER_INFO* mi);
static inline bool slave_killed(THD* thd,RELAY_LOG_INFO* rli);
static inline bool io_slave_killed(THD* thd,MASTER_INFO* mi);
static inline bool sql_slave_killed(THD* thd,RELAY_LOG_INFO* rli);
static int init_slave_thread(THD* thd, SLAVE_THD_TYPE thd_type);
static int safe_connect(THD* thd, MYSQL* mysql, MASTER_INFO* mi);
static int safe_reconnect(THD* thd, MYSQL* mysql, MASTER_INFO* mi);
static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
bool reconnect);
static int safe_sleep(THD* thd, MASTER_INFO* mi, int sec);
static int safe_sleep(THD* thd, int sec, CHECK_KILLED_FUNC thread_killed,
void* thread_killed_arg);
static int request_table_dump(MYSQL* mysql, const char* db, const char* table);
static int create_table_from_dump(THD* thd, NET* net, const char* db,
const char* table_name);
......@@ -605,14 +608,14 @@ void end_slave()
free_string_array(&replicate_wild_ignore_table);
}
static inline bool slave_killed(THD* thd, MASTER_INFO* mi)
static bool io_slave_killed(THD* thd, MASTER_INFO* mi)
{
DBUG_ASSERT(mi->io_thd == thd);
DBUG_ASSERT(mi->slave_running == 1); // tracking buffer overrun
return mi->abort_slave || abort_loop || thd->killed;
}
static inline bool slave_killed(THD* thd, RELAY_LOG_INFO* rli)
static bool sql_slave_killed(THD* thd, RELAY_LOG_INFO* rli)
{
DBUG_ASSERT(rli->sql_thd == thd);
DBUG_ASSERT(rli->slave_running == 1);// tracking buffer overrun
......@@ -1375,7 +1378,8 @@ static int init_slave_thread(THD* thd, SLAVE_THD_TYPE thd_type)
DBUG_RETURN(0);
}
static int safe_sleep(THD* thd, MASTER_INFO* mi, int sec)
static int safe_sleep(THD* thd, int sec, CHECK_KILLED_FUNC thread_killed,
void* thread_killed_arg)
{
thr_alarm_t alarmed;
thr_alarm_init(&alarmed);
......@@ -1398,7 +1402,7 @@ static int safe_sleep(THD* thd, MASTER_INFO* mi, int sec)
if (thr_alarm_in_use(&alarmed))
thr_end_alarm(&alarmed);
if (slave_killed(thd,mi))
if ((*thread_killed)(thd,thread_killed_arg))
return 1;
start_time=time((time_t*) 0);
}
......@@ -1528,7 +1532,7 @@ static int exec_relay_log_event(THD* thd, RELAY_LOG_INFO* rli)
DBUG_ASSERT(rli->sql_thd==thd);
Log_event * ev = next_event(rli);
DBUG_ASSERT(rli->sql_thd==thd);
if (slave_killed(thd,rli))
if (sql_slave_killed(thd,rli))
return 1;
if (ev)
{
......@@ -1661,13 +1665,13 @@ pthread_handler_decl(handle_slave_io,arg)
goto err;
}
while (!slave_killed(thd,mi))
while (!io_slave_killed(thd,mi))
{
thd->proc_info = "Requesting binlog dump";
if (request_dump(mysql, mi))
{
sql_print_error("Failed on request_dump()");
if(slave_killed(thd,mi))
if(io_slave_killed(thd,mi))
{
sql_print_error("Slave I/O thread killed while requesting master \
dump");
......@@ -1682,11 +1686,12 @@ dump");
hopefuly the admin can fix the problem sometime
*/
if (retried_once)
safe_sleep(thd, mi, mi->connect_retry);
safe_sleep(thd,mi->connect_retry,(CHECK_KILLED_FUNC)io_slave_killed,
(void*)mi);
else
retried_once = 1;
if (slave_killed(thd,mi))
if (io_slave_killed(thd,mi))
{
sql_print_error("Slave I/O thread killed while retrying master \
dump");
......@@ -1697,7 +1702,7 @@ dump");
sql_print_error("Slave I/O thread: failed dump request, \
reconnecting to try again, log '%s' at postion %s", IO_RPL_LOG_NAME,
llstr(mi->master_log_pos,llbuff));
if (safe_reconnect(thd, mysql, mi) || slave_killed(thd,mi))
if (safe_reconnect(thd, mysql, mi) || io_slave_killed(thd,mi))
{
sql_print_error("Slave I/O thread killed during or \
after reconnect");
......@@ -1707,11 +1712,11 @@ after reconnect");
goto connected;
}
while (!slave_killed(thd,mi))
while (!io_slave_killed(thd,mi))
{
thd->proc_info = "Reading master update";
ulong event_len = read_event(mysql, mi);
if (slave_killed(thd,mi))
if (io_slave_killed(thd,mi))
{
sql_print_error("Slave I/O thread killed while reading event");
goto err;
......@@ -1731,11 +1736,12 @@ is correct, restart the server with a higher value of max_allowed_packet",
thd->proc_info = "Waiting to reconnect after a failed read";
mc_end_server(mysql);
if (retried_once) // punish repeat offender with sleep
safe_sleep(thd,mi,mi->connect_retry);
safe_sleep(thd,mi->connect_retry,(CHECK_KILLED_FUNC)io_slave_killed,
(void*)mi);
else
retried_once = 1;
if (slave_killed(thd,mi))
if (io_slave_killed(thd,mi))
{
sql_print_error("Slave I/O thread killed while waiting to \
reconnect after a failed read");
......@@ -1745,7 +1751,7 @@ reconnect after a failed read");
sql_print_error("Slave I/O thread: Failed reading log event, \
reconnecting to retry, log '%s' position %s", IO_RPL_LOG_NAME,
llstr(mi->master_log_pos, llbuff));
if (safe_reconnect(thd, mysql, mi) || slave_killed(thd,mi))
if (safe_reconnect(thd, mysql, mi) || io_slave_killed(thd,mi))
{
sql_print_error("Slave I/O thread killed during or after a \
reconnect done to recover from failed read");
......@@ -1771,8 +1777,8 @@ from master");
goto err;
}
#endif
} // while(!slave_killed(thd,mi)) - read/exec loop
} // while(!slave_killed(thd,mi)) - slave loop
}
}
// error = 0;
err:
......@@ -1874,14 +1880,14 @@ pthread_handler_decl(handle_slave_sql,arg)
log '%s' at position %s,relay log: name='%s',pos='%s'", RPL_LOG_NAME,
llstr(rli->master_log_pos,llbuff),rli->relay_log_name,
llstr(rli->relay_log_pos,llbuff1));
while (!slave_killed(thd,rli))
while (!sql_slave_killed(thd,rli))
{
thd->proc_info = "Processing master log event";
DBUG_ASSERT(rli->sql_thd == thd);
if (exec_relay_log_event(thd,rli))
{
// do not scare the user if SQL thread was simply killed or stopped
if (!slave_killed(thd,rli))
if (!sql_slave_killed(thd,rli))
sql_print_error("\
Error running query, slave SQL thread aborted. Fix the problem, and restart \
the slave SQL thread with \"SLAVE START\". We stopped at log \
......@@ -1889,7 +1895,7 @@ the slave SQL thread with \"SLAVE START\". We stopped at log \
RPL_LOG_NAME, llstr(rli->master_log_pos, llbuff));
goto err;
}
} // while(!slave_killed(thd,rli)) - read/exec loop
} // while(!sql_slave_killed(thd,rli)) - read/exec loop
// error = 0;
err:
......@@ -2224,7 +2230,7 @@ static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
#ifndef DBUG_OFF
events_till_disconnect = disconnect_slave_event_count;
#endif
while (!(slave_was_killed = slave_killed(thd,mi)) &&
while (!(slave_was_killed = io_slave_killed(thd,mi)) &&
(reconnect ? mc_mysql_reconnect(mysql) != 0 :
!mc_mysql_connect(mysql, mi->host, mi->user, mi->password, 0,
mi->port, 0, 0)))
......@@ -2238,7 +2244,8 @@ static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
mc_mysql_error(mysql), last_errno=mc_mysql_errno(mysql),
mi->connect_retry);
}
safe_sleep(thd,mi,mi->connect_retry);
safe_sleep(thd,mi->connect_retry,(CHECK_KILLED_FUNC)io_slave_killed,
(void*)mi);
/*
By default we try forever. The reason is that failure will trigger
master election, so if the user did not set master_retry_count we
......@@ -2333,7 +2340,7 @@ Log_event* next_event(RELAY_LOG_INFO* rli)
*/
pthread_mutex_lock(&rli->data_lock);
for (; !(was_killed=slave_killed(thd,rli)) ;)
for (; !(was_killed=sql_slave_killed(thd,rli)) ;)
{
/*
We can have two kinds of log reading:
......@@ -2465,7 +2472,8 @@ event(errno=%d,cur_log->error=%d)",
my_errno,cur_log->error);
// no need to hog the mutex while we sleep
pthread_mutex_unlock(&rli->data_lock);
safe_sleep(rli->sql_thd,rli->mi,1);
safe_sleep(rli->sql_thd,1,(CHECK_KILLED_FUNC)sql_slave_killed,
(void*)rli);
pthread_mutex_lock(&rli->data_lock);
}
}
......
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