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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
}