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foo2

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This commit is contained in:
grog@mysql.com[grog]
2006-04-13 17:22:56 +09:30
parent b2cd3a963a
commit 3eb783813f
8 changed files with 2 additions and 359 deletions
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231
sql/ha_innodb.cc
View File

@ -1741,25 +1741,6 @@ innobase_report_binlog_offset_and_commit(
trx->mysql_log_file_name = log_file_name; trx->mysql_log_file_name = log_file_name;
trx->mysql_log_offset = (ib_longlong)end_offset; trx->mysql_log_offset = (ib_longlong)end_offset;
#ifdef HAVE_REPLICATION
if (thd->variables.sync_replication) {
/* Let us store the binlog file name and the position, so that
we know how long to wait for the binlog to the replicated to
the slave in synchronous replication. */
if (trx->repl_wait_binlog_name == NULL) {
trx->repl_wait_binlog_name =
(char*)mem_alloc_noninline(FN_REFLEN + 100);
}
ut_a(strlen(log_file_name) < FN_REFLEN + 100);
strcpy(trx->repl_wait_binlog_name, log_file_name);
trx->repl_wait_binlog_pos = (ib_longlong)end_offset;
}
#endif /* HAVE_REPLICATION */
trx->flush_log_later = TRUE; trx->flush_log_later = TRUE;
innobase_commit(thd, TRUE); innobase_commit(thd, TRUE);
@ -1828,219 +1809,9 @@ innobase_commit_complete(
trx_commit_complete_for_mysql(trx); trx_commit_complete_for_mysql(trx);
} }
#ifdef HAVE_REPLICATION
if (thd->variables.sync_replication
&& trx->repl_wait_binlog_name
&& innobase_repl_state != 0) {
struct timespec abstime;
int cmp;
int ret;
/* In synchronous replication, let us wait until the MySQL
replication has sent the relevant binlog segment to the
replication slave. */
pthread_mutex_lock(&innobase_repl_cond_mutex);
try_again:
if (innobase_repl_state == 0) {
pthread_mutex_unlock(&innobase_repl_cond_mutex);
return(0);
}
cmp = strcmp(innobase_repl_file_name,
trx->repl_wait_binlog_name);
if (cmp > 0
|| (cmp == 0 && innobase_repl_pos
>= (my_off_t)trx->repl_wait_binlog_pos)) {
/* We have already sent the relevant binlog to the
slave: no need to wait here */
pthread_mutex_unlock(&innobase_repl_cond_mutex);
/* printf("Binlog now sent\n"); */
return(0);
}
/* Let us update the info about the minimum binlog position
of waiting threads in the innobase_repl_... variables */
if (innobase_repl_wait_file_name_inited != 0) {
cmp = strcmp(trx->repl_wait_binlog_name,
innobase_repl_wait_file_name);
if (cmp < 0
|| (cmp == 0 && (my_off_t)trx->repl_wait_binlog_pos
<= innobase_repl_wait_pos)) {
/* This thd has an even lower position, let
us update the minimum info */
strcpy(innobase_repl_wait_file_name,
trx->repl_wait_binlog_name);
innobase_repl_wait_pos =
trx->repl_wait_binlog_pos;
}
} else {
strcpy(innobase_repl_wait_file_name,
trx->repl_wait_binlog_name);
innobase_repl_wait_pos = trx->repl_wait_binlog_pos;
innobase_repl_wait_file_name_inited = 1;
}
set_timespec(abstime, thd->variables.sync_replication_timeout);
/* Let us suspend this thread to wait on the condition;
when replication has progressed far enough, we will release
these waiting threads. The following call
pthread_cond_timedwait also atomically unlocks
innobase_repl_cond_mutex. */
innobase_repl_n_wait_threads++;
/* printf("Waiting for binlog to be sent\n"); */
ret = pthread_cond_timedwait(&innobase_repl_cond,
&innobase_repl_cond_mutex, &abstime);
innobase_repl_n_wait_threads--;
if (ret != 0) {
ut_print_timestamp(stderr);
sql_print_error("MySQL synchronous replication was "
"not able to send the binlog to the "
"slave within the timeout %lu. We "
"assume that the slave has become "
"inaccessible, and switch off "
"synchronous replication until the "
"communication to the slave works "
"again. MySQL synchronous replication "
"has sent binlog to the slave up to "
"file %s, position %lu. This "
"transaction needs it to be sent up "
"to file %s, position %lu.",
thd->variables.sync_replication_timeout,
innobase_repl_file_name,
(ulong) innobase_repl_pos,
trx->repl_wait_binlog_name,
(ulong) trx->repl_wait_binlog_pos);
innobase_repl_state = 0;
pthread_mutex_unlock(&innobase_repl_cond_mutex);
return(0);
}
goto try_again;
}
#endif // HAVE_REPLICATION
return(0); return(0);
} }
#ifdef HAVE_REPLICATION
/*********************************************************************
In synchronous replication, reports to InnoDB up to which binlog position
we have sent the binlog to the slave. Note that replication is synchronous
for one slave only. For other slaves, we do nothing in this function. This
function is used in a replication master. */
int
innobase_repl_report_sent_binlog(
/*=============================*/
/* out: 0 */
THD* thd, /* in: thread doing the binlog communication to
the slave */
char* log_file_name, /* in: binlog file name */
my_off_t end_offset) /* in: the offset in the binlog file up to
which we sent the contents to the slave */
{
int cmp;
ibool can_release_threads = 0;
/* If synchronous replication is not switched on, or this thd is
sending binlog to a slave where we do not need synchronous replication,
then return immediately */
if (thd->server_id != thd->variables.sync_replication_slave_id) {
/* Do nothing */
return(0);
}
pthread_mutex_lock(&innobase_repl_cond_mutex);
if (innobase_repl_state == 0) {
ut_print_timestamp(stderr);
sql_print_warning("Switching MySQL synchronous replication on "
"again at binlog file %s, position %lu",
log_file_name, (ulong) end_offset);
innobase_repl_state = 1;
}
/* The position should increase monotonically, since just one thread
is sending the binlog to the slave for which we want synchronous
replication. Let us check this, and print an error to the .err log
if that is not the case. */
if (innobase_repl_file_name_inited) {
cmp = strcmp(log_file_name, innobase_repl_file_name);
if (cmp < 0
|| (cmp == 0 && end_offset < innobase_repl_pos)) {
ut_print_timestamp(stderr);
sql_print_error("MySQL synchronous replication has "
"sent binlog to the slave up to file "
"%s, position %lu, but now MySQL "
"reports that it sent the binlog only "
"up to file %s, position %lu",
innobase_repl_file_name,
(ulong) innobase_repl_pos,
log_file_name, (ulong) end_offset);
}
}
strcpy(innobase_repl_file_name, log_file_name);
innobase_repl_pos = end_offset;
innobase_repl_file_name_inited = 1;
if (innobase_repl_n_wait_threads > 0) {
/* Let us check if some of the waiting threads doing a trx
commit can now proceed */
cmp = strcmp(innobase_repl_file_name,
innobase_repl_wait_file_name);
if (cmp > 0
|| (cmp == 0 && innobase_repl_pos
>= innobase_repl_wait_pos)) {
/* Yes, at least one waiting thread can now proceed:
let us release all waiting threads with a broadcast */
can_release_threads = 1;
innobase_repl_wait_file_name_inited = 0;
}
}
pthread_mutex_unlock(&innobase_repl_cond_mutex);
if (can_release_threads) {
pthread_cond_broadcast(&innobase_repl_cond);
}
return(0);
}
#endif /* HAVE_REPLICATION */
/********************************************************************* /*********************************************************************
Rolls back a transaction or the latest SQL statement. */ Rolls back a transaction or the latest SQL statement. */
@ -4815,7 +4586,7 @@ ha_innobase::create(
possible adaptive hash latch to avoid deadlocks of threads */ possible adaptive hash latch to avoid deadlocks of threads */
trx_search_latch_release_if_reserved(parent_trx); trx_search_latch_release_if_reserved(parent_trx);
trx = trx_allocate_for_mysql(); trx = trx_allocate_for_mysql();
trx->mysql_thd = thd; trx->mysql_thd = thd;

3
sql/ha_innodb.h
View File

@ -303,9 +303,6 @@ int innobase_rollback_by_xid(
XID *xid); /* in : X/Open XA Transaction Identification */ XID *xid); /* in : X/Open XA Transaction Identification */
int innobase_repl_report_sent_binlog(THD *thd, char *log_file_name,
my_off_t end_offset);
/*********************************************************************** /***********************************************************************
Create a consistent view for a cursor based on current transaction Create a consistent view for a cursor based on current transaction
which is created if the corresponding MySQL thread still lacks one. which is created if the corresponding MySQL thread still lacks one.

53
sql/handler.cc
View File

@ -2684,56 +2684,3 @@ TYPELIB *ha_known_exts(void)
} }
return &known_extensions; return &known_extensions;
} }
#ifdef HAVE_REPLICATION
/*
Reports to table handlers up to which position we have sent the binlog
to a slave in replication
SYNOPSIS
ha_repl_report_sent_binlog()
thd thread doing the binlog communication to the slave
log_file_name binlog file name
end_offse t the offset in the binlog file up to which we sent the
contents to the slave
NOTES
Only works for InnoDB at the moment
RETURN VALUE
Always 0 (= success)
*/
int ha_repl_report_sent_binlog(THD *thd, char *log_file_name,
my_off_t end_offset)
{
#ifdef HAVE_INNOBASE_DB
return innobase_repl_report_sent_binlog(thd,log_file_name,end_offset);
#else
return 0;
#endif
}
/*
Reports to table handlers that we stop replication to a specific slave
SYNOPSIS
ha_repl_report_replication_stop()
thd thread doing the binlog communication to the slave
NOTES
Does nothing at the moment
RETURN VALUE
Always 0 (= success)
PARAMETERS
*/
int ha_repl_report_replication_stop(THD *thd)
{
return 0;
}
#endif /* HAVE_REPLICATION */

5
sql/handler.h
View File

@ -965,8 +965,3 @@ void trans_register_ha(THD *thd, bool all, handlerton *ht);
*/ */
#define trans_need_2pc(thd, all) ((total_ha_2pc > 1) && \ #define trans_need_2pc(thd, all) ((total_ha_2pc > 1) && \
!((all ? &thd->transaction.all : &thd->transaction.stmt)->no_2pc)) !((all ? &thd->transaction.all : &thd->transaction.stmt)->no_2pc))
/* semi-synchronous replication */
int ha_repl_report_sent_binlog(THD *thd, char *log_file_name,
my_off_t end_offset);
int ha_repl_report_replication_stop(THD *thd);

17
sql/mysqld.cc
View File

@ -5899,23 +5899,6 @@ The minimum value for this variable is 4096.",
{"sync-frm", OPT_SYNC_FRM, "Sync .frm to disk on create. Enabled by default.", {"sync-frm", OPT_SYNC_FRM, "Sync .frm to disk on create. Enabled by default.",
(gptr*) &opt_sync_frm, (gptr*) &opt_sync_frm, 0, GET_BOOL, NO_ARG, 1, 0, (gptr*) &opt_sync_frm, (gptr*) &opt_sync_frm, 0, GET_BOOL, NO_ARG, 1, 0,
0, 0, 0, 0}, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
{"sync-replication", OPT_SYNC_REPLICATION,
"Enable synchronous replication.",
(gptr*) &global_system_variables.sync_replication,
(gptr*) &global_system_variables.sync_replication,
0, GET_ULONG, REQUIRED_ARG, 0, 0, 1, 0, 1, 0},
{"sync-replication-slave-id", OPT_SYNC_REPLICATION_SLAVE_ID,
"Synchronous replication is wished for this slave.",
(gptr*) &global_system_variables.sync_replication_slave_id,
(gptr*) &global_system_variables.sync_replication_slave_id,
0, GET_ULONG, REQUIRED_ARG, 0, 0, ~0L, 0, 1, 0},
{"sync-replication-timeout", OPT_SYNC_REPLICATION_TIMEOUT,
"Synchronous replication timeout.",
(gptr*) &global_system_variables.sync_replication_timeout,
(gptr*) &global_system_variables.sync_replication_timeout,
0, GET_ULONG, REQUIRED_ARG, 10, 0, ~0L, 0, 1, 0},
#endif /* HAVE_REPLICATION */
{"table_cache", OPT_TABLE_CACHE, {"table_cache", OPT_TABLE_CACHE,
"The number of open tables for all threads.", (gptr*) &table_cache_size, "The number of open tables for all threads.", (gptr*) &table_cache_size,
(gptr*) &table_cache_size, 0, GET_ULONG, REQUIRED_ARG, 64, 1, 512*1024L, (gptr*) &table_cache_size, 0, GET_ULONG, REQUIRED_ARG, 64, 1, 512*1024L,

25
sql/set_var.cc
View File

@ -376,17 +376,6 @@ sys_var_thd_table_type sys_table_type("table_type",
&SV::table_type); &SV::table_type);
sys_var_thd_storage_engine sys_storage_engine("storage_engine", sys_var_thd_storage_engine sys_storage_engine("storage_engine",
&SV::table_type); &SV::table_type);
#ifdef HAVE_REPLICATION
sys_var_sync_binlog_period sys_sync_binlog_period("sync_binlog", &sync_binlog_period);
sys_var_thd_ulong sys_sync_replication("sync_replication",
&SV::sync_replication);
sys_var_thd_ulong sys_sync_replication_slave_id(
"sync_replication_slave_id",
&SV::sync_replication_slave_id);
sys_var_thd_ulong sys_sync_replication_timeout(
"sync_replication_timeout",
&SV::sync_replication_timeout);
#endif
sys_var_bool_ptr sys_sync_frm("sync_frm", &opt_sync_frm); sys_var_bool_ptr sys_sync_frm("sync_frm", &opt_sync_frm);
sys_var_long_ptr sys_table_cache_size("table_cache", sys_var_long_ptr sys_table_cache_size("table_cache",
&table_cache_size); &table_cache_size);
@ -708,12 +697,6 @@ sys_var *sys_variables[]=
&sys_sql_warnings, &sys_sql_warnings,
&sys_sql_notes, &sys_sql_notes,
&sys_storage_engine, &sys_storage_engine,
#ifdef HAVE_REPLICATION
&sys_sync_binlog_period,
&sys_sync_replication,
&sys_sync_replication_slave_id,
&sys_sync_replication_timeout,
#endif
&sys_sync_frm, &sys_sync_frm,
&sys_table_cache_size, &sys_table_cache_size,
&sys_table_lock_wait_timeout, &sys_table_lock_wait_timeout,
@ -1009,15 +992,7 @@ struct show_var_st init_vars[]= {
{"sql_notes", (char*) &sys_sql_notes, SHOW_BOOL}, {"sql_notes", (char*) &sys_sql_notes, SHOW_BOOL},
{"sql_warnings", (char*) &sys_sql_warnings, SHOW_BOOL}, {"sql_warnings", (char*) &sys_sql_warnings, SHOW_BOOL},
{sys_storage_engine.name, (char*) &sys_storage_engine, SHOW_SYS}, {sys_storage_engine.name, (char*) &sys_storage_engine, SHOW_SYS},
#ifdef HAVE_REPLICATION
{sys_sync_binlog_period.name,(char*) &sys_sync_binlog_period, SHOW_SYS},
#endif
{sys_sync_frm.name, (char*) &sys_sync_frm, SHOW_SYS}, {sys_sync_frm.name, (char*) &sys_sync_frm, SHOW_SYS},
#ifdef HAVE_REPLICATION
{sys_sync_replication.name, (char*) &sys_sync_replication, SHOW_SYS},
{sys_sync_replication_slave_id.name, (char*) &sys_sync_replication_slave_id,SHOW_SYS},
{sys_sync_replication_timeout.name, (char*) &sys_sync_replication_timeout,SHOW_SYS},
#endif
#ifdef HAVE_TZNAME #ifdef HAVE_TZNAME
{"system_time_zone", system_time_zone, SHOW_CHAR}, {"system_time_zone", system_time_zone, SHOW_CHAR},
#endif #endif

6
sql/sql_class.h
View File

@ -552,11 +552,7 @@ struct system_variables
my_bool new_mode; my_bool new_mode;
my_bool query_cache_wlock_invalidate; my_bool query_cache_wlock_invalidate;
my_bool engine_condition_pushdown; my_bool engine_condition_pushdown;
#ifdef HAVE_REPLICATION
ulong sync_replication;
ulong sync_replication_slave_id;
ulong sync_replication_timeout;
#endif /* HAVE_REPLICATION */
#ifdef HAVE_INNOBASE_DB #ifdef HAVE_INNOBASE_DB
my_bool innodb_table_locks; my_bool innodb_table_locks;
my_bool innodb_support_xa; my_bool innodb_support_xa;

21
sql/sql_repl.cc
View File

@ -385,9 +385,6 @@ impossible position";
goto err; goto err;
} }
if (thd->variables.sync_replication)
ha_repl_report_sent_binlog(thd, log_file_name, pos);
/* /*
We need to start a packet with something other than 255 We need to start a packet with something other than 255
to distinguish it from error to distinguish it from error
@ -480,9 +477,6 @@ impossible position";
goto err; goto err;
} }
if (thd->variables.sync_replication)
ha_repl_report_sent_binlog(thd, log_file_name, my_b_tell(&log));
/* /*
No need to save this event. We are only doing simple reads No need to save this event. We are only doing simple reads
(no real parsing of the events) so we don't need it. And so (no real parsing of the events) so we don't need it. And so
@ -541,9 +535,6 @@ impossible position";
goto err; goto err;
} }
if (thd->variables.sync_replication)
ha_repl_report_sent_binlog(thd, log_file_name, my_b_tell(&log));
DBUG_PRINT("info", ("log event code %d", DBUG_PRINT("info", ("log event code %d",
(*packet)[LOG_EVENT_OFFSET+1] )); (*packet)[LOG_EVENT_OFFSET+1] ));
if ((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT) if ((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT)
@ -657,9 +648,6 @@ impossible position";
goto err; goto err;
} }
if (thd->variables.sync_replication)
ha_repl_report_sent_binlog(thd, log_file_name, my_b_tell(&log));
if ((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT) if ((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT)
{ {
if (send_file(thd)) if (send_file(thd))
@ -726,18 +714,12 @@ impossible position";
goto err; goto err;
} }
if (thd->variables.sync_replication)
ha_repl_report_sent_binlog(thd, log_file_name, 0);
packet->length(0); packet->length(0);
packet->append('\0'); packet->append('\0');
} }
} }
end: end:
if (thd->variables.sync_replication)
ha_repl_report_replication_stop(thd);
end_io_cache(&log); end_io_cache(&log);
(void)my_close(file, MYF(MY_WME)); (void)my_close(file, MYF(MY_WME));
@ -749,9 +731,6 @@ end:
DBUG_VOID_RETURN; DBUG_VOID_RETURN;
err: err:
if (thd->variables.sync_replication)
ha_repl_report_replication_stop(thd);
thd->proc_info = "Waiting to finalize termination"; thd->proc_info = "Waiting to finalize termination";
end_io_cache(&log); end_io_cache(&log);
/* /*