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A fix and a test case for Bug#12713 "Error in a stored function called from

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a SELECT doesn't cause ROLLBACK of statem".

The idea of the fix is to ensure that we always commit the current
statement at the end of dispatch_command(). In order to not issue
redundant disc syncs, an optimization of the two-phase commit
protocol is implemented to bypass the two phase commit if
the transaction is read-only.
This commit is contained in:
kostja@dipika.(none)
2008-02-19 14:43:01 +03:00
parent 48d326612a
commit acf9b1f346
27 changed files with 2514 additions and 247 deletions
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32
sql/sql_class.h
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@ -686,7 +686,8 @@ private:
struct st_savepoint {
struct st_savepoint *prev;
char *name;
uint length, nht;
uint length;
Ha_trx_info *ha_list;
};
enum xa_states {XA_NOTR=0, XA_ACTIVE, XA_IDLE, XA_PREPARED};
@ -1092,6 +1093,33 @@ private:
};
/**
Storage engine specific thread local data.
*/
struct Ha_data
{
/**
Storage engine specific thread local data.
Lifetime: one user connection.
*/
void *ha_ptr;
/**
0: Life time: one statement within a transaction. If @@autocommit is
on, also represents the entire transaction.
@sa trans_register_ha()
1: Life time: one transaction within a connection.
If the storage engine does not participate in a transaction,
this should not be used.
@sa trans_register_ha()
*/
Ha_trx_info ha_info[2];
Ha_data() :ha_ptr(NULL) {}
};
/**
@class THD
For each client connection we create a separate thread with THD serving as
@ -1231,7 +1259,7 @@ public:
uint in_sub_stmt;
/* container for handler's private per-connection data */
void *ha_data[MAX_HA];
Ha_data ha_data[MAX_HA];
#ifndef MYSQL_CLIENT
int binlog_setup_trx_data();