Below is the list of changes that have just been committed into a local
5.1 repository of mats. When mats does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
For information on how to access the public repository
see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html
ChangeSet@stripped, 2006-10-05 15:22:41+02:00, mats@romeo.(none) +3 -0
Merge romeo.(none):/home/bkroot/mysql-5.1-new-rpl
into romeo.(none):/home/bk/b20265-mysql-5.1-new-rpl
MERGE: 1.2245.12.1
sql/log.cc@stripped, 2006-10-05 15:22:38+02:00, mats@romeo.(none) +1 -4
Manual merge
MERGE: 1.222.2.1
sql/sql_class.h@stripped, 2006-10-05 15:17:28+02:00, mats@romeo.(none) +0 -0
Auto merged
MERGE: 1.304.9.1
sql/sql_insert.cc@stripped, 2006-10-05 15:22:38+02:00, mats@romeo.(none) +3 -3
Manual merge
MERGE: 1.214.2.1
# This is a BitKeeper patch. What follows are the unified diffs for the
# set of deltas contained in the patch. The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User: mats
# Host: romeo.(none)
# Root: /home/bk/b20265-mysql-5.1-new-rpl/RESYNC
--- 1.234/sql/log.cc 2006-10-05 15:22:49 +02:00
+++ 1.235/sql/log.cc 2006-10-05 15:22:49 +02:00
@@ -32,11 +32,22 @@
#include <mysql/plugin.h>
+/*
+ Define placement versions of operator new and operator delete since
+ we cannot be sure that the <new> include exists.
+ */
+inline void *operator new(size_t, void *ptr) { return ptr; }
+inline void *operator new[](size_t, void *ptr) { return ptr; }
+inline void operator delete(void*, void*) { /* Do nothing */ }
+inline void operator delete[](void*, void*) { /* Do nothing */ }
+
/* max size of the log message */
#define MAX_LOG_BUFFER_SIZE 1024
#define MAX_USER_HOST_SIZE 512
#define MAX_TIME_SIZE 32
+#define FLAGSTR(V,F) ((V)&(F)?#F" ":"")
+
LOGGER logger;
MYSQL_BIN_LOG mysql_bin_log;
@@ -70,23 +81,96 @@
}
/*
- This is a POD. Please keep it that way!
-
- Don't add constructors, destructors, or virtual functions.
+ Helper class to store binary log transaction data.
*/
-struct binlog_trx_data {
+class binlog_trx_data {
+public:
+ enum {
+ UNDEF_POS = ~ (my_off_t) 0
+ };
+
+ binlog_trx_data()
+#ifdef HAVE_ROW_BASED_REPLICATION
+ : m_pending(0), before_stmt_pos(UNDEF_POS)
+#endif
+ {
+ trans_log.end_of_file= max_binlog_cache_size;
+ }
+
+ ~binlog_trx_data()
+ {
+#ifdef HAVE_ROW_BASED_REPLICATION
+ DBUG_ASSERT(pending() == NULL);
+#endif
+ close_cached_file(&trans_log);
+ }
+
+ my_off_t position() const {
+ return my_b_tell(&trans_log);
+ }
+
bool empty() const
{
#ifdef HAVE_ROW_BASED_REPLICATION
- return pending == NULL && my_b_tell(&trans_log) == 0;
+ return pending() == NULL && my_b_tell(&trans_log) == 0;
#else
return my_b_tell(&trans_log) == 0;
#endif
}
- binlog_trx_data() {}
+
+ /*
+ Truncate the transaction cache to a certain position. This
+ includes deleting the pending event.
+ */
+ void truncate(my_off_t pos)
+ {
+#ifdef HAVE_ROW_BASED_REPLICATION
+ delete pending();
+ set_pending(0);
+#endif
+ reinit_io_cache(&trans_log, WRITE_CACHE, pos, 0, 0);
+ }
+
+ /*
+ Reset the entire contents of the transaction cache, emptying it
+ completely.
+ */
+ void reset() {
+ if (!empty())
+ truncate(0);
+#ifdef HAVE_ROW_BASED_REPLICATION
+ before_stmt_pos= UNDEF_POS;
+#endif
+ trans_log.end_of_file= max_binlog_cache_size;
+ }
+
+#ifdef HAVE_ROW_BASED_REPLICATION
+ Rows_log_event *pending() const
+ {
+ return m_pending;
+ }
+
+ void set_pending(Rows_log_event *const pending)
+ {
+ m_pending= pending;
+ }
+#endif
+
IO_CACHE trans_log; // The transaction cache
+
+private:
#ifdef HAVE_ROW_BASED_REPLICATION
- Rows_log_event *pending; // The pending binrows event
+ /*
+ Pending binrows event. This event is the event where the rows are
+ currently written.
+ */
+ Rows_log_event *m_pending;
+
+public:
+ /*
+ Binlog position before the start of the current statement.
+ */
+ my_off_t before_stmt_pos;
#endif
};
@@ -1149,6 +1233,69 @@
}
+ /*
+ Save position of binary log transaction cache.
+
+ SYNPOSIS
+ binlog_trans_log_savepos()
+
+ thd The thread to take the binlog data from
+ pos Pointer to variable where the position will be stored
+
+ DESCRIPTION
+
+ Save the current position in the binary log transaction cache into
+ the variable pointed to by 'pos'
+ */
+
+static void
+binlog_trans_log_savepos(THD *thd, my_off_t *pos)
+{
+ DBUG_ENTER("binlog_trans_log_savepos");
+ DBUG_ASSERT(pos != NULL);
+ if (thd->ha_data[binlog_hton.slot] == NULL)
+ thd->binlog_setup_trx_data();
+ binlog_trx_data *const trx_data=
+ (binlog_trx_data*) thd->ha_data[binlog_hton.slot];
+ DBUG_ASSERT(mysql_bin_log.is_open());
+ *pos= trx_data->position();
+ DBUG_PRINT("return", ("*pos=%u", *pos));
+ DBUG_VOID_RETURN;
+}
+
+
+/*
+ Truncate the binary log transaction cache.
+
+ SYNPOSIS
+ binlog_trans_log_truncate()
+
+ thd The thread to take the binlog data from
+ pos Position to truncate to
+
+ DESCRIPTION
+
+ Truncate the binary log to the given position. Will not change
+ anything else.
+
+ */
+static void
+binlog_trans_log_truncate(THD *thd, my_off_t pos)
+{
+ DBUG_ENTER("binlog_trans_log_truncate");
+ DBUG_PRINT("enter", ("pos=%u", pos));
+
+ DBUG_ASSERT(thd->ha_data[binlog_hton.slot] != NULL);
+ /* Only true if binlog_trans_log_savepos() wasn't called before */
+ DBUG_ASSERT(pos != ~(my_off_t) 0);
+
+ binlog_trx_data *const trx_data=
+ (binlog_trx_data*) thd->ha_data[binlog_hton.slot];
+ trx_data->truncate(pos);
+ DBUG_VOID_RETURN;
+}
+
+
/*
this function is mostly a placeholder.
conceptually, binlog initialization (now mostly done in MYSQL_BIN_LOG::open)
@@ -1175,27 +1322,62 @@
{
binlog_trx_data *const trx_data=
(binlog_trx_data*) thd->ha_data[binlog_hton->slot];
- IO_CACHE *trans_log= &trx_data->trans_log;
DBUG_ASSERT(mysql_bin_log.is_open() && trx_data->empty());
- close_cached_file(trans_log);
- thd->ha_data[binlog_hton->slot]= 0;
+ thd->ha_data[binlog_hton.slot]= 0;
+ trx_data->~binlog_trx_data();
my_free((gptr)trx_data, MYF(0));
return 0;
}
+/*
+ End a transaction.
+
+ SYNOPSIS
+ binlog_end_trans()
+
+ thd The thread whose transaction should be ended
+ trx_data Pointer to the transaction data to use
+ end_ev The end event to use, or NULL
+ all True if the entire transaction should be ended, false if
+ only the statement transaction should be ended.
+
+ DESCRIPTION
+
+ End the currently open transaction. The transaction can be either
+ a real transaction (if 'all' is true) or a statement transaction
+ (if 'all' is false).
+
+ If 'end_ev' is NULL, the transaction is a rollback of only
+ transactional tables, so the transaction cache will be truncated
+ to either just before the last opened statement transaction (if
+ 'all' is false), or reset completely (if 'all' is true).
+ */
static int
-binlog_end_trans(THD *thd, binlog_trx_data *trx_data,
- Log_event *end_ev)
+binlog_end_trans(THD *thd, binlog_trx_data *trx_data,
+ Log_event *end_ev, bool all)
{
DBUG_ENTER("binlog_end_trans");
int error=0;
IO_CACHE *trans_log= &trx_data->trans_log;
+ DBUG_PRINT("enter", ("transaction: %s, end_ev=%p",
+ all ? "all" : "stmt", end_ev));
+ DBUG_PRINT("info", ("thd->options={ %s%s}",
+ FLAGSTR(thd->options, OPTION_NOT_AUTOCOMMIT),
+ FLAGSTR(thd->options, OPTION_BEGIN)));
-
- /* NULL denotes ROLLBACK with nothing to replicate */
+ /*
+ NULL denotes ROLLBACK with nothing to replicate: i.e., rollback of
+ only transactional tables. If the transaction contain changes to
+ any non-transactiona tables, we need write the transaction and log
+ a ROLLBACK last.
+ */
if (end_ev != NULL)
{
/*
+ Doing a commit or a rollback including non-transactional tables,
+ i.e., ending a transaction where we might write the transaction
+ cache to the binary log.
+
We can always end the statement when ending a transaction since
transactions are not allowed inside stored functions. If they
were, we would have to ensure that we're not ending a statement
@@ -1204,38 +1386,55 @@
#ifdef HAVE_ROW_BASED_REPLICATION
thd->binlog_flush_pending_rows_event(TRUE);
#endif
- error= mysql_bin_log.write(thd, trans_log, end_ev);
+ /*
+ We write the transaction cache to the binary log if either we're
+ committing the entire transaction, or if we are doing an
+ autocommit outside a transaction.
+ */
+ if (all || !(thd->options & (OPTION_BEGIN | OPTION_NOT_AUTOCOMMIT)))
+ {
+ error= mysql_bin_log.write(thd, &trx_data->trans_log, end_ev);
+ trx_data->reset();
+#ifdef HAVE_ROW_BASED_REPLICATION
+ /*
+ We need to step the table map version after writing the
+ transaction cache to disk.
+ */
+ mysql_bin_log.update_table_map_version();
+#endif
+ statistic_increment(binlog_cache_use, &LOCK_status);
+ if (trans_log->disk_writes != 0)
+ {
+ statistic_increment(binlog_cache_disk_use, &LOCK_status);
+ trans_log->disk_writes= 0;
+ }
+ }
}
#ifdef HAVE_ROW_BASED_REPLICATION
else
{
-#ifdef HAVE_ROW_BASED_REPLICATION
- thd->binlog_delete_pending_rows_event();
-#endif
- }
+ /*
+ If rolling back an entire transaction or a single statement not
+ inside a transaction, we reset the transaction cache.
- /*
- We need to step the table map version both after writing the
- entire transaction to the log file and after rolling back the
- transaction.
-
- We need to step the table map version after writing the
- transaction cache to disk. In addition, we need to step the table
- map version on a rollback to ensure that a new table map event is
- generated instead of the one that was written to the thrown-away
- transaction cache.
- */
- mysql_bin_log.update_table_map_version();
-#endif
+ If rolling back a statement in a transaction, we truncate the
+ transaction cache to remove the statement.
- statistic_increment(binlog_cache_use, &LOCK_status);
- if (trans_log->disk_writes != 0)
- {
- statistic_increment(binlog_cache_disk_use, &LOCK_status);
- trans_log->disk_writes= 0;
+ */
+ if (all || !(thd->options & (OPTION_BEGIN | OPTION_NOT_AUTOCOMMIT)))
+ trx_data->reset();
+ else
+ trx_data->truncate(trx_data->before_stmt_pos); // ...statement
+
+ /*
+ We need to step the table map version on a rollback to ensure
+ that a new table map event is generated instead of the one that
+ was written to the thrown-away transaction cache.
+ */
+ mysql_bin_log.update_table_map_version();
}
- reinit_io_cache(trans_log, WRITE_CACHE, (my_off_t) 0, 0, 1); // cannot fail
- trans_log->end_of_file= max_binlog_cache_size;
+#endif
+
DBUG_RETURN(error);
}
@@ -1252,26 +1451,31 @@
static int binlog_commit(handlerton *hton, THD *thd, bool all)
{
+ int error= 0;
DBUG_ENTER("binlog_commit");
binlog_trx_data *const trx_data=
(binlog_trx_data*) thd->ha_data[binlog_hton->slot];
IO_CACHE *trans_log= &trx_data->trans_log;
- DBUG_ASSERT(mysql_bin_log.is_open() &&
- (all || !(thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))));
+ DBUG_ASSERT(mysql_bin_log.is_open());
- if (trx_data->empty())
+ if (all && trx_data->empty())
{
// we're here because trans_log was flushed in MYSQL_BIN_LOG::log()
+ trx_data->reset();
DBUG_RETURN(0);
}
- if (all)
+ if (all)
{
Query_log_event qev(thd, STRING_WITH_LEN("COMMIT"), TRUE, FALSE);
qev.error_code= 0; // see comment in MYSQL_LOG::write(THD, IO_CACHE)
- DBUG_RETURN(binlog_end_trans(thd, trx_data, &qev));
+ int error= binlog_end_trans(thd, trx_data, &qev, all);
+ DBUG_RETURN(error);
}
else
- DBUG_RETURN(binlog_end_trans(thd, trx_data, &invisible_commit));
+ {
+ int error= binlog_end_trans(thd, trx_data, &invisible_commit, all);
+ DBUG_RETURN(error);
+ }
}
static int binlog_rollback(handlerton *hton, THD *thd, bool all)
@@ -1281,13 +1485,13 @@
binlog_trx_data *const trx_data=
(binlog_trx_data*) thd->ha_data[binlog_hton->slot];
IO_CACHE *trans_log= &trx_data->trans_log;
- /*
- First assert is guaranteed - see trans_register_ha() call below.
- The second must be true. If it is not, we're registering
- unnecessary, doing extra work. The cause should be found and eliminated
- */
- DBUG_ASSERT(all || !(thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)));
- DBUG_ASSERT(mysql_bin_log.is_open() && !trx_data->empty());
+ DBUG_ASSERT(mysql_bin_log.is_open());
+
+ if (trx_data->empty()) {
+ trx_data->reset();
+ DBUG_RETURN(0);
+ }
+
/*
Update the binary log with a BEGIN/ROLLBACK block if we have
cached some queries and we updated some non-transactional
@@ -1299,10 +1503,10 @@
{
Query_log_event qev(thd, STRING_WITH_LEN("ROLLBACK"), TRUE, FALSE);
qev.error_code= 0; // see comment in MYSQL_LOG::write(THD, IO_CACHE)
- error= binlog_end_trans(thd, trx_data, &qev);
+ error= binlog_end_trans(thd, trx_data, &qev, all);
}
else
- error= binlog_end_trans(thd, trx_data, 0);
+ error= binlog_end_trans(thd, trx_data, 0, all);
DBUG_RETURN(error);
}
@@ -1330,11 +1534,8 @@
static int binlog_savepoint_set(handlerton *hton, THD *thd, void *sv)
{
DBUG_ENTER("binlog_savepoint_set");
- binlog_trx_data *const trx_data=
- (binlog_trx_data*) thd->ha_data[binlog_hton->slot];
- DBUG_ASSERT(mysql_bin_log.is_open() && my_b_tell(&trx_data->trans_log));
- *(my_off_t *)sv= my_b_tell(&trx_data->trans_log);
+ binlog_trans_log_savepos(thd, (my_off_t*) sv);
/* Write it to the binary log */
int const error=
@@ -1349,7 +1550,7 @@
binlog_trx_data *const trx_data=
(binlog_trx_data*) thd->ha_data[binlog_hton->slot];
IO_CACHE *trans_log= &trx_data->trans_log;
- DBUG_ASSERT(mysql_bin_log.is_open() && my_b_tell(trans_log));
+ DBUG_ASSERT(mysql_bin_log.is_open());
/*
Write ROLLBACK TO SAVEPOINT to the binlog cache if we have updated some
@@ -1364,7 +1565,7 @@
thd->query, thd->query_length, TRUE, FALSE);
DBUG_RETURN(error);
}
- reinit_io_cache(trans_log, WRITE_CACHE, *(my_off_t *)sv, 0, 0);
+ binlog_trans_log_truncate(thd, *(my_off_t*)sv);
DBUG_RETURN(0);
}
@@ -2494,7 +2695,7 @@
thread. If the transaction involved MyISAM tables, it should go
into binlog even on rollback.
*/
- (void) pthread_mutex_lock(&LOCK_thread_count);
+ VOID(pthread_mutex_lock(&LOCK_thread_count));
/* Save variables so that we can reopen the log */
save_name=name;
@@ -2526,7 +2727,7 @@
my_free((gptr) save_name, MYF(0));
err:
- (void) pthread_mutex_unlock(&LOCK_thread_count);
+ VOID(pthread_mutex_unlock(&LOCK_thread_count));
pthread_mutex_unlock(&LOCK_index);
pthread_mutex_unlock(&LOCK_log);
DBUG_RETURN(error);
@@ -3092,18 +3293,76 @@
ha_data[binlog_hton->slot]= 0;
DBUG_RETURN(1); // Didn't manage to set it up
}
- trx_data->trans_log.end_of_file= max_binlog_cache_size;
+
+ trx_data= new (ha_data[binlog_hton.slot]) binlog_trx_data;
+
DBUG_RETURN(0);
}
+#ifdef HAVE_ROW_BASED_REPLICATION
/*
- Write a table map to the binary log.
+ Function to start a statement and optionally a transaction for the
+ binary log.
+
+ SYNOPSIS
+ binlog_start_trans_and_stmt()
+
+ DESCRIPTION
- This function is called from ha_external_lock() after the storage
- engine has registered for the transaction.
+ This function does three things:
+ - Start a transaction if not in autocommit mode or if a BEGIN
+ statement has been seen.
+
+ - Start a statement transaction to allow us to truncate the binary
+ log.
+
+ - Save the currrent binlog position so that we can roll back the
+ statement by truncating the transaction log.
+
+ We only update the saved position if the old one was undefined,
+ the reason is that there are some cases (e.g., for CREATE-SELECT)
+ where the position is saved twice (e.g., both in
+ select_create::prepare() and THD::binlog_write_table_map()) , but
+ we should use the first. This means that calls to this function
+ can be used to start the statement before the first table map
+ event, to include some extra events.
+ */
+
+void
+THD::binlog_start_trans_and_stmt()
+{
+ DBUG_ENTER("binlog_start_trans_and_stmt");
+ binlog_trx_data *trx_data= (binlog_trx_data*) ha_data[binlog_hton.slot];
+ DBUG_PRINT("enter", ("trx_data=0x%lu", trx_data));
+ if (trx_data)
+ DBUG_PRINT("enter", ("trx_data->before_stmt_pos=%u",
+ trx_data->before_stmt_pos));
+ if (trx_data == NULL ||
+ trx_data->before_stmt_pos == binlog_trx_data::UNDEF_POS)
+ {
+ /*
+ The call to binlog_trans_log_savepos() might create the trx_data
+ structure, if it didn't exist before, so we save the position
+ into an auto variable and then write it into the transaction
+ data for the binary log (i.e., trx_data).
+ */
+ my_off_t pos= 0;
+ binlog_trans_log_savepos(this, &pos);
+ trx_data= (binlog_trx_data*) ha_data[binlog_hton.slot];
+
+ trx_data->before_stmt_pos= pos;
+
+ if (options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))
+ trans_register_ha(this, TRUE, &binlog_hton);
+ trans_register_ha(this, FALSE, &binlog_hton);
+ }
+ DBUG_VOID_RETURN;
+}
+
+/*
+ Write a table map to the binary log.
*/
-#ifdef HAVE_ROW_BASED_REPLICATION
int THD::binlog_write_table_map(TABLE *table, bool is_trans)
{
int error;
@@ -3122,10 +3381,8 @@
Table_map_log_event
the_event(this, table, table->s->table_map_id, is_trans, flags);
- if (is_trans)
- trans_register_ha(this,
- (options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) != 0,
- binlog_hton);
+ if (is_trans && binlog_table_maps == 0)
+ binlog_start_trans_and_stmt();
if ((error= mysql_bin_log.write(&the_event)))
DBUG_RETURN(error);
@@ -3146,7 +3403,7 @@
(since the trx_data is set up there). In that case, we just return
NULL.
*/
- return trx_data ? trx_data->pending : NULL;
+ return trx_data ? trx_data->pending() : NULL;
}
void
@@ -3159,7 +3416,7 @@
(binlog_trx_data*) ha_data[binlog_hton->slot];
DBUG_ASSERT(trx_data);
- trx_data->pending= ev;
+ trx_data->set_pending(ev);
}
@@ -3168,8 +3425,9 @@
(either cached binlog if transaction, or disk binlog). Sets a new pending
event.
*/
-int MYSQL_BIN_LOG::
- flush_and_set_pending_rows_event(THD *thd, Rows_log_event* event)
+int
+MYSQL_BIN_LOG::flush_and_set_pending_rows_event(THD *thd,
+ Rows_log_event* event)
{
DBUG_ENTER("MYSQL_BIN_LOG::flush_and_set_pending_rows_event(event)");
DBUG_ASSERT(mysql_bin_log.is_open());
@@ -3182,9 +3440,9 @@
DBUG_ASSERT(trx_data);
- DBUG_PRINT("info", ("trx_data->pending=%p", trx_data->pending));
+ DBUG_PRINT("info", ("trx_data->pending()=%p", trx_data->pending()));
- if (Rows_log_event* pending= trx_data->pending)
+ if (Rows_log_event* pending= trx_data->pending())
{
IO_CACHE *file= &log_file;
@@ -3334,15 +3592,14 @@
binlog_trx_data *const trx_data=
(binlog_trx_data*) thd->ha_data[binlog_hton->slot];
IO_CACHE *trans_log= &trx_data->trans_log;
- bool trans_log_in_use= my_b_tell(trans_log) != 0;
- if (event_info->get_cache_stmt() && !trans_log_in_use)
- trans_register_ha(thd,
- (thd->options &
- (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) != 0,
- binlog_hton);
- if (event_info->get_cache_stmt() || trans_log_in_use)
+ my_off_t trans_log_pos= my_b_tell(trans_log);
+ if (event_info->get_cache_stmt() || trans_log_pos != 0)
{
- DBUG_PRINT("info", ("Using trans_log"));
+ DBUG_PRINT("info", ("Using trans_log: cache=%d, trans_log_pos=%u",
+ event_info->get_cache_stmt(),
+ trans_log_pos));
+ if (trans_log_pos == 0)
+ thd->binlog_start_trans_and_stmt();
file= trans_log;
}
/*
@@ -3546,61 +3803,69 @@
uint length;
/*
- Log "BEGIN" at the beginning of the transaction.
- which may contain more than 1 SQL statement.
- */
- if (thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))
+ We only bother to write to the binary log if there is anything
+ to write.
+ */
+ if (my_b_tell(cache) > 0)
{
- Query_log_event qinfo(thd, STRING_WITH_LEN("BEGIN"), TRUE, FALSE);
/*
- Imagine this is rollback due to net timeout, after all statements of
- the transaction succeeded. Then we want a zero-error code in BEGIN.
- In other words, if there was a really serious error code it's already
- in the statement's events, there is no need to put it also in this
- internally generated event, and as this event is generated late it
- would lead to false alarms.
- This is safer than thd->clear_error() against kills at shutdown.
+ Log "BEGIN" at the beginning of the transaction.
+ which may contain more than 1 SQL statement.
*/
- qinfo.error_code= 0;
- /*
- Now this Query_log_event has artificial log_pos 0. It must be adjusted
- to reflect the real position in the log. Not doing it would confuse the
- slave: it would prevent this one from knowing where he is in the
- master's binlog, which would result in wrong positions being shown to
- the user, MASTER_POS_WAIT undue waiting etc.
- */
- if (qinfo.write(&log_file))
- goto err;
- }
- /* Read from the file used to cache the queries .*/
- if (reinit_io_cache(cache, READ_CACHE, 0, 0, 0))
- goto err;
- length=my_b_bytes_in_cache(cache);
- DBUG_EXECUTE_IF("half_binlogged_transaction", length-=100;);
- do
- {
- /* Write data to the binary log file */
- if (my_b_write(&log_file, cache->read_pos, length))
- goto err;
- cache->read_pos=cache->read_end; // Mark buffer used up
- DBUG_EXECUTE_IF("half_binlogged_transaction", goto DBUG_skip_commit;);
- } while ((length=my_b_fill(cache)));
+ if (thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))
+ {
+ Query_log_event qinfo(thd, STRING_WITH_LEN("BEGIN"), TRUE, FALSE);
+ /*
+ Imagine this is rollback due to net timeout, after all statements of
+ the transaction succeeded. Then we want a zero-error code in BEGIN.
+ In other words, if there was a really serious error code it's already
+ in the statement's events, there is no need to put it also in this
+ internally generated event, and as this event is generated late it
+ would lead to false alarms.
+ This is safer than thd->clear_error() against kills at shutdown.
+ */
+ qinfo.error_code= 0;
+ /*
+ Now this Query_log_event has artificial log_pos 0. It must be adjusted
+ to reflect the real position in the log. Not doing it would confuse the
+ slave: it would prevent this one from knowing where he is in the
+ master's binlog, which would result in wrong positions being shown to
+ the user, MASTER_POS_WAIT undue waiting etc.
+ */
+ if (qinfo.write(&log_file))
+ goto err;
+ }
+ /* Read from the file used to cache the queries .*/
+ if (reinit_io_cache(cache, READ_CACHE, 0, 0, 0))
+ goto err;
+ length=my_b_bytes_in_cache(cache);
+ DBUG_EXECUTE_IF("half_binlogged_transaction", length-=100;);
+ do
+ {
+ /* Write data to the binary log file */
+ if (my_b_write(&log_file, cache->read_pos, length))
+ goto err;
+ cache->read_pos=cache->read_end; // Mark buffer used up
+ DBUG_EXECUTE_IF("half_binlogged_transaction", goto DBUG_skip_commit;);
+ } while ((length=my_b_fill(cache)));
- if (commit_event->write(&log_file))
- goto err;
+ if (commit_event && commit_event->write(&log_file))
+ goto err;
#ifndef DBUG_OFF
-DBUG_skip_commit:
+ DBUG_skip_commit:
#endif
- if (flush_and_sync())
- goto err;
- DBUG_EXECUTE_IF("half_binlogged_transaction", abort(););
- if (cache->error) // Error on read
- {
- sql_print_error(ER(ER_ERROR_ON_READ), cache->file_name, errno);
- write_error=1; // Don't give more errors
- goto err;
+ if (flush_and_sync())
+ goto err;
+ DBUG_EXECUTE_IF("half_binlogged_transaction", abort(););
+ if (cache->error) // Error on read
+ {
+ sql_print_error(ER(ER_ERROR_ON_READ), cache->file_name, errno);
+ write_error=1; // Don't give more errors
+ goto err;
+ }
+ signal_update();
}
- signal_update();
+
/*
if commit_event is Xid_log_event, increase the number of
prepared_xids (it's decreasd in ::unlog()). Binlog cannot be rotated
@@ -3609,7 +3874,7 @@
If the commit_event is not Xid_log_event (then it's a Query_log_event)
rotate binlog, if necessary.
*/
- if (commit_event->get_type_code() == XID_EVENT)
+ if (commit_event && commit_event->get_type_code() == XID_EVENT)
{
pthread_mutex_lock(&LOCK_prep_xids);
prepared_xids++;
@@ -4619,12 +4884,17 @@
Xid_log_event xle(thd, xid);
binlog_trx_data *trx_data=
(binlog_trx_data*) thd->ha_data[binlog_hton->slot];
- DBUG_RETURN(!binlog_end_trans(thd, trx_data, &xle)); // invert return value
+ /*
+ We always commit the entire transaction when writing an XID. Also
+ note that the return value is inverted.
+ */
+ DBUG_RETURN(!binlog_end_trans(thd, trx_data, &xle, TRUE));
}
void TC_LOG_BINLOG::unlog(ulong cookie, my_xid xid)
{
pthread_mutex_lock(&LOCK_prep_xids);
+ DBUG_ASSERT(prepared_xids > 0);
if (--prepared_xids == 0)
pthread_cond_signal(&COND_prep_xids);
pthread_mutex_unlock(&LOCK_prep_xids);
--- 1.315/sql/sql_class.h 2006-10-05 15:22:49 +02:00
+++ 1.316/sql/sql_class.h 2006-10-05 15:22:49 +02:00
@@ -930,6 +930,7 @@
/*
Public interface to write RBR events to the binlog
*/
+ void binlog_start_trans_and_stmt();
int binlog_write_table_map(TABLE *table, bool is_transactional);
int binlog_write_row(TABLE* table, bool is_transactional,
MY_BITMAP const* cols, my_size_t colcnt,
--- 1.226/sql/sql_insert.cc 2006-10-05 15:22:49 +02:00
+++ 1.227/sql/sql_insert.cc 2006-10-05 15:22:49 +02:00
@@ -1266,7 +1266,7 @@
if (thd->lex->current_select)
thd->lex->current_select->no_error= 0; // Give error
table->file->print_error(error,MYF(0));
-
+
before_trg_err:
table->file->restore_auto_increment(prev_insert_id);
if (key)
@@ -2014,6 +2014,10 @@
rolled back. We only need to roll back a potential statement
transaction, since real transactions are rolled back in
close_thread_tables().
+
+ TODO: This is not true any more, table maps are generated on the
+ first call to ha_*_row() instead. Remove code that are used to
+ cover for the case outlined above.
*/
ha_rollback_stmt(thd);
@@ -2357,6 +2361,7 @@
DBUG_ENTER("select_insert::prepare");
unit= u;
+
/*
Since table in which we are going to insert is added to the first
select, LEX::current_select should point to the first select while
@@ -2586,56 +2591,54 @@
if (errcode != ER_UNKNOWN_ERROR && !thd->net.report_error)
my_message(errcode, err, MYF(0));
- if (!table)
+ /*
+ If the creation of the table failed (due to a syntax error, for
+ example), no table will have been opened and therefore 'table'
+ will be NULL. In that case, we still need to execute the rollback
+ and the end of the function to truncate the binary log, but we can
+ skip all the intermediate steps.
+ */
+ if (table)
{
/*
- This can only happen when using CREATE ... SELECT and the table was not
- created becasue of an syntax error
+ If we are not in prelocked mode, we end the bulk insert started
+ before.
*/
- DBUG_VOID_RETURN;
- }
- if (!thd->prelocked_mode)
- table->file->ha_end_bulk_insert();
- /*
- If at least one row has been inserted/modified and will stay in the table
- (the table doesn't have transactions) we must write to the binlog (and
- the error code will make the slave stop).
-
- For many errors (example: we got a duplicate key error while
- inserting into a MyISAM table), no row will be added to the table,
- so passing the error to the slave will not help since there will
- be an error code mismatch (the inserts will succeed on the slave
- with no error).
-
- If we are using row-based replication we have two cases where this
- code is executed: replication of CREATE-SELECT and replication of
- INSERT-SELECT.
-
- When replicating a CREATE-SELECT statement, we shall not write the
- events to the binary log and should thus not set
- OPTION_STATUS_NO_TRANS_UPDATE.
-
- When replicating INSERT-SELECT, we shall not write the events to
- the binary log for transactional table, but shall write all events
- if there is one or more writes to non-transactional tables. In
- this case, the OPTION_STATUS_NO_TRANS_UPDATE is set if there is a
- write to a non-transactional table, otherwise it is cleared.
- */
- if (info.copied || info.deleted || info.updated)
- {
- if (!table->file->has_transactions())
+ if (!thd->prelocked_mode)
+ table->file->ha_end_bulk_insert();
+
+ /*
+ If at least one row has been inserted/modified and will stay in
+ the table (the table doesn't have transactions) we must write to
+ the binlog (and the error code will make the slave stop).
+
+ For many errors (example: we got a duplicate key error while
+ inserting into a MyISAM table), no row will be added to the table,
+ so passing the error to the slave will not help since there will
+ be an error code mismatch (the inserts will succeed on the slave
+ with no error).
+
+ If table creation failed, the number of rows modified will also be
+ zero, so no check for that is made.
+ */
+ if (info.copied || info.deleted || info.updated)
{
- if (mysql_bin_log.is_open())
+ DBUG_ASSERT(table != NULL);
+ if (!table->file->has_transactions())
{
- thd->binlog_query(THD::ROW_QUERY_TYPE, thd->query, thd->query_length,
- table->file->has_transactions(), FALSE);
+ if (mysql_bin_log.is_open())
+ {
+ thd->binlog_query(THD::ROW_QUERY_TYPE, thd->query, thd->query_length,
+ table->file->has_transactions(), FALSE);
+ }
+ if (!thd->current_stmt_binlog_row_based && !table->s->tmp_table &&
+ !can_rollback_data())
+ thd->options|= OPTION_STATUS_NO_TRANS_UPDATE;
+ query_cache_invalidate3(thd, table, 1);
}
- if (!thd->current_stmt_binlog_row_based && !table->s->tmp_table &&
- !can_rollback_data())
- thd->options|= OPTION_STATUS_NO_TRANS_UPDATE;
- query_cache_invalidate3(thd, table, 1);
}
}
+
ha_rollback_stmt(thd);
table->file->ha_release_auto_increment();
DBUG_VOID_RETURN;
@@ -2645,8 +2648,11 @@
bool select_insert::send_eof()
{
int error,error2;
+ bool const trans_table= table->file->has_transactions();
ulonglong id;
DBUG_ENTER("select_insert::send_eof");
+ DBUG_PRINT("enter", ("trans_table=%d, table_type='%s'",
+ trans_table, table->file->table_type()));
error= (!thd->prelocked_mode) ? table->file->ha_end_bulk_insert():0;
table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
@@ -2666,9 +2672,8 @@
are not logged in RBR)
- We are using statement based replication
*/
- if (!table->file->has_transactions() &&
- (!table->s->tmp_table ||
- !thd->current_stmt_binlog_row_based))
+ if (!trans_table &&
+ (!table->s->tmp_table || !thd->current_stmt_binlog_row_based))
thd->options|= OPTION_STATUS_NO_TRANS_UPDATE;
}
@@ -2684,11 +2689,22 @@
thd->clear_error();
thd->binlog_query(THD::ROW_QUERY_TYPE,
thd->query, thd->query_length,
- table->file->has_transactions(), FALSE);
+ trans_table, FALSE);
+ }
+ /*
+ We will call ha_autocommit_or_rollback() also for
+ non-transactional tables under row-based replication: there might
+ be events in the binary logs transaction, and we need to write
+ them to the binary log.
+ */
+ if (trans_table || thd->current_stmt_binlog_row_based)
+ {
+ int const error2= ha_autocommit_or_rollback(thd, error);
+ if (error2 && !error)
+ error=error2;
}
- if ((error2=ha_autocommit_or_rollback(thd,error)) && ! error)
- error=error2;
table->file->ha_release_auto_increment();
+
if (error)
{
table->file->print_error(error,MYF(0));
@@ -2885,14 +2901,19 @@
class MY_HOOKS : public TABLEOP_HOOKS {
public:
MY_HOOKS(select_create *x) : ptr(x) { }
+
+ private:
virtual void do_prelock(TABLE **tables, uint count)
{
- if (ptr->get_thd()->current_stmt_binlog_row_based &&
- !(ptr->get_create_info()->options & HA_LEX_CREATE_TMP_TABLE))
- ptr->binlog_show_create_table(tables, count);
+ TABLE const *const table = *tables;
+ if (ptr->get_thd()->current_stmt_binlog_row_based &&
+ table->s->tmp_table == NO_TMP_TABLE &&
+ !ptr->get_create_info()->table_existed)
+ {
+ ptr->binlog_show_create_table(tables, count);
+ }
}
- private:
select_create *ptr;
};
@@ -2901,6 +2922,20 @@
#endif
unit= u;
+
+#ifdef HAVE_ROW_BASED_REPLICATION
+ /*
+ Start a statement transaction before the create if we are creating
+ a non-temporary table and are using row-based replication for the
+ statement.
+ */
+ if ((thd->lex->create_info.options & HA_LEX_CREATE_TMP_TABLE) == 0 &&
+ thd->current_stmt_binlog_row_based)
+ {
+ thd->binlog_start_trans_and_stmt();
+ }
+#endif
+
if (!(table= create_table_from_items(thd, create_info, create_table,
extra_fields, keys, &values,
&thd->extra_lock, hook_ptr)))
@@ -3048,8 +3083,17 @@
table->s->version= 0;
hash_delete(&open_cache,(byte*) table);
if (!create_info->table_existed)
+ {
quick_rm_table(table_type, create_table->db,
create_table->table_name, 0);
+ /*
+ We roll back the statement, including truncating the
+ transaction cache of the binary log, if the statement
+ failed.
+ */
+ if (thd->current_stmt_binlog_row_based)
+ ha_rollback_stmt(thd);
+ }
/* Tell threads waiting for refresh that something has happened */
if (version != refresh_version)
broadcast_refresh();
| Thread |
|---|
| • bk commit into 5.1 tree (mats:1.2342) | Mats Kindahl | 5 Oct |
