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MDEV-4506: Parallel replication: error handling.

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Add an error code to the wait_for_commit facility.

Now, when a transaction fails, it can signal the error to
any subsequent transaction that is waiting for it to commit.
The waiting transactions then receive the error code back from
wait_for_prior_commit() and can handle the error appropriately.

Also fix one race that could cause crash if @@slave_parallel_threads
were changed several times quickly in succession.
This commit is contained in:
unknown
2013-10-14 15:28:16 +02:00
parent 2e100cc5a4
commit 2842f6b5dc
12 changed files with 62 additions and 37 deletions
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2
include/mysql/plugin.h
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@@ -716,7 +716,7 @@ void thd_set_ha_data(MYSQL_THD thd, const struct handlerton *hton,
thd_wakeup_subsequent_commits() is only needed when no transaction
coordinator is used, meaning a single storage engine and no binary log.
*/
void thd_wakeup_subsequent_commits(MYSQL_THD thd);
void thd_wakeup_subsequent_commits(MYSQL_THD thd, int wakeup_error);
#ifdef __cplusplus
}

2
include/mysql/plugin_audit.h.pp
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@@ -236,7 +236,7 @@ void mysql_query_cache_invalidate4(void* thd,
void *thd_get_ha_data(const void* thd, const struct handlerton *hton);
void thd_set_ha_data(void* thd, const struct handlerton *hton,
const void *ha_data);
void thd_wakeup_subsequent_commits(void* thd);
void thd_wakeup_subsequent_commits(void* thd, int wakeup_error);
struct mysql_event_general
{
unsigned int event_subclass;

2
include/mysql/plugin_auth.h.pp
View File

@@ -236,7 +236,7 @@ void mysql_query_cache_invalidate4(void* thd,
void *thd_get_ha_data(const void* thd, const struct handlerton *hton);
void thd_set_ha_data(void* thd, const struct handlerton *hton,
const void *ha_data);
void thd_wakeup_subsequent_commits(void* thd);
void thd_wakeup_subsequent_commits(void* thd, int wakeup_error);
#include <mysql/plugin_auth_common.h>
typedef struct st_plugin_vio_info
{

2
include/mysql/plugin_ftparser.h.pp
View File

@@ -189,7 +189,7 @@ void mysql_query_cache_invalidate4(void* thd,
void *thd_get_ha_data(const void* thd, const struct handlerton *hton);
void thd_set_ha_data(void* thd, const struct handlerton *hton,
const void *ha_data);
void thd_wakeup_subsequent_commits(void* thd);
void thd_wakeup_subsequent_commits(void* thd, int wakeup_error);
enum enum_ftparser_mode
{
MYSQL_FTPARSER_SIMPLE_MODE= 0,