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MDEV-16024 transaction_registry.begin_timestamp is wrong for explicit transactions

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Store transaction start time in thd->transaction.start_time.
THD::transaction_time() wraps over transaction.start_time taking into
account current status of BEGIN.
This commit is contained in:
Aleksey Midenkov
2018-04-25 23:33:08 +03:00
committed by Sergei Golubchik
parent fd4153f083
commit 68cad6aa24
6 changed files with 50 additions and 3 deletions
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16
sql/sql_class.h
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@ -2627,6 +2627,15 @@ public:
WT_THD wt; ///< for deadlock detection
Rows_log_event *m_pending_rows_event;
struct st_trans_time : public timeval
{
void reset(THD *thd)
{
tv_sec= thd->query_start();
tv_usec= (long) thd->query_start_sec_part();
}
} start_time;
/*
Tables changed in transaction (that must be invalidated in query cache).
List contain only transactional tables, that not invalidated in query
@ -3470,6 +3479,13 @@ private:
}
public:
timeval transaction_time()
{
if (!in_multi_stmt_transaction_mode())
transaction.start_time.reset(this);
return transaction.start_time;
}
inline void set_start_time()
{
if (user_time.val)